Matthew Russell | 2014008417 | matthew@planetcoms.co.za | 078 163 0868 Supervisors: J. Smit, P. Smit, H. Raubenheimer Department of Architecture, Faculty of Natural and Agricultural Sciences, University of the Free State ... This dissertation is submitted in partial fulfillment of the requirements for the degree M. Arch (Prof.) Declaration of original authorship The work contained in this dissertation has not been previously submitted to meet the requirements for a qualification at this or any other institution of higher education. To the best of my knowledge, this dissertation contains no material previously published or written by another any other person except where due reference is made. ... Acknowledgements: the sensational people of our cubicle, the lecturers who have invested in me over the last 5 years, my ever supportive family 1 0.0 What and Why? African Ginger, like many medicinal plants, is extinct in the wild. More valuable plants will become extinct if they are not protected through cultivation. However, cultivation is not traditionally how a herbalist would gather their specimens. Herbalist’s resources come from ritualized places of gathering known only to themselves. This journey takes them beyond the realms of what is ‘known’ by the tribe and into areas only they knows. They see these places through a different lens to the rest of society, and has an in-depth knowledge of plants and what each can do. The knowledge of these plants is implicitly rooted in the stories and myth of the specific area. In contemporary society, knowledge is explicit and must be available to all to be embraced. This dictates that the herbalist’s lenses must be shared to transform how society sees ethnobotany. As cities such as Bloemfontein grow, and farms occupy increasing amounts of this landscape, the medicine man has fewer and fewer places to gather his specimens. The realm of the ‘unknown’ wild is, therefore, further and further diminished. The congestion of the city is the ‘new wild’ and is brought into being by man. 60% of South Africans use herbalists as their healthcare Figure 1.1 - African Ginger (Siphonochilus aethiopicus) provider, and there is 40 times the number of herbalists than trained medical doctors in South Africa. This leads to questioning why the government has not provided similar infrastructure for this kind of healthcare. The University of the Free State (UFS) is rectifying this problem by funding the division of Phytomedicine and Phytopharmacology within the Post Graduate School. This is a university research building which incorporates greenhouses and gardens in the Mid-Town of Bloemfontein. 2 3 Document Structure: Conceptual Approach Design Synthesis The MAKING How do I tackle it Challenges Topological Typological Reflection Sustainability Did it work? Situating The Investigation Technical Evaluating the process. The Client The Occupants Identified Site 4 5 Contents 0.0 What and Why? 3 1.0 Situating the Investigation 2.0 Challenges 26 3.0 Technical Challenges 1.1 The Client (Who?) 8 2.1 Topology Related Challenges 26 2.1.1 Being Critical of surroundings 26 3.1 Municipal Non-Negotiables 55 4.0 Design Synthesis 82 1.2 The clients needs (What?) 10 2.1.2 Connection to existing green space 30 3.1.1 Encroachments 56 4.1 Design Development 82 Academics 10 2.1.3 Servitude 31 3.1.2 Side Walk Paving 56 4.2 Design Conclusions 94 Herbalists 10 Public 10 2.2 Typology Related Challenges 36 3.2 Servitudes 57 2.2.1 Gardens 36 3.2.1 Development Rights 57 1.3 Identified Site (Where?) 12 2.2.2 Enhancing an experience or understanding 38 5.0 Reflection 113 1.3.1 Bloemfontein: 12 2.2.3 Humanizing the research space 41 3.3 Topography 59 1.3.2 Mid-Town: 14 Works Cited 116 1.3.3 Fountain Street (25-27) 16 2.3 Sustainability Related Challenges: 3.4 Climate 59 Conceptual and Ethical Aims 42 1.4 Conceptual Approach? 18 2.3.1 Place 43 3.5 Structural Investigations 59 1.4.1 Touch Stone 18 2.3.2 Water 44 3.5.1Exoskeleton Structures 59 1.4.2 Implicit-Explicit 19 2.3.3 Energy 45 3.5.2 Masonry Shells 64 1.4.3 Performance 20 2.3.4 Health 47 3.5.3 Portal Frames 65 1.4.4 Congestion 21 2.3.5 Equity 48 3.5.4 Conclusions 65 2.3.6 Beauty 49 2.3.7 Materials 50 3.6 Health and Safety 69 3.6.1 Refuse 69 3.6.2 Ventilation 71 3.6.3 Laboratory Operation 73 3.6.4 Lighting 75 3.6.5 Fire 77 3.6.6 Vegetation 78 3.6.7 Service Shafts 78 3.6.8 Sprinkler System 78 3.6.9 Library Operation 80 3.6.10 Accommodation List 81 6 7 1 Situating the Investigation 1.1 The Client (Who?) The UFS Division of Phytomedicine and Phytopharmacology PResearcher erme The group investigates the biological effects of regional -Phd Researcher nen medicinal plants used in the folkloric medicine of the Eastern -Post Grad Lecturer t M -Employed by the Free State. This means that the focus is on that of Sotho em University b medicine. The research is a direct response to the lack of e-Logical and Focused rs education and scientific knowledge about ethnobotany in -Managerial South Africa. The group proposes conservation strategies to preserve medicinal plants. Where plants on the South Post Grad. African National Biodiversity Institute’s (SANBI) red list are Student Gardener -Caregiver investigated, through micro-propagation and field trials -Researching Further -Practical (University of the Free State, 2019). The group works in -Under Guidance -Wide knowledge collaboration with other university departments across Africa -Logical (Figure 1.4). The research at the UFS focuses on the physical properties of medicinal plants. However, this is only part of ethnobotany, while the focus is on the physical, the other aspects are inseparable (Figure 1.2). Traveling Herbalist -Purchase plants Herbalists of the Free State can attend accredited training by Researcher -Tell Stories the university, thus giving more public credit to their work. -Conferences -Jack of all trades Due to the secretive and local nature of herbalists, no single -Short term study -Gatherer person knows all the remedies available, and they may not -Focused -Exchange pass all their knowledge on to their apprentice. As harvesting Every Day space is taken over by farmland and city, the knowledge about Ch Man that area is quickly lost. Thus herbalist’s experience must be ang -Recreationi recorded and preserved to keep ethnobotany relevant. ng -Purchase PlantsMem -Learningb -Alien Members of the public have a misguided perception of ers ethnobotany, which has led to western medicine being given priority in the minds of urban citizens. Learning about ethnobotany and what these medicinal plants can do will change this perception. Figure 1.2 - Focus area Figure 1.3 - Occupants 8 9 Academic Business 1.2 The clients needs (What?) The building is an expansion of the current university department functions of Ph.D., Masters, and Honors research (Figure 1.3). It provides researchers with access to improved research capabilities and educational scope. Academics Both climate controlled and regular greenhouses provide adequate growing space for both the propagation trials and plant study. Included are conferencing facilities for symposiums with the partner universities. The library holds both plant specimens as well as a full catalogue of relevant University of Ibadan study material. University of Lagos Herbalists Lagos State University Workshop/seminar facilities provide herbalists the opportunity take part in short courses engaging with the UFS’s mandate to engage with the city. Public The city of Bloemfontein’s residents require leisure space. Most days every bench along the length of the spruit is occupied by residents enjoying their evenings. Redesigned for the 2010 world cup this artery through the city was revitalized with trees and wide sidewalks. This space has no barriers to entry and serves the entire population of the city. While this space has been enhanced, many of the squares across the city have been lost over time to development (Figure 1.5). This loss of public space within the city leads to poor living conditions within the CBD. Poor living conditions encourage expansion University of the Witwatersrand to where the living conditions are ‘better’. Encroaching on the surrounding landscape, exacerbating the problems already ARC (Animal Production Institute) faced by herbalists. University of Fort Hare Cape Peninsula University of Technology 10 Figure 1.4 - Partner Universities Figure 1.5 - Lost public space 11 1.3 Identified Site (Where?) Further, it has a history and culture of cultivation within the town, through its many parks and squares (Figure 1.5). This means of thinking about gardens and cultivation Process Used: can be challenged through the way this department operates. The site (25-27 Fountain Street) is selected by using a process of elimination. Areas are selected and eliminated based on the needs of the occupants on a macro , mezzo and 1.3.2 Mid-Town: micro scale (Figure 1.6-1.13). The most important needs are considered earlier in the Currently the UFS is seen as an ‘island’, completely fenced off and away from the city process. center (Figure 1.6). The UFS has a mandate to ‘open’ its gates and make education available to the city (Appendix A). Bringing a department into the city is a physical 1.3.1 Bloemfontein: manifestation of that goal and will allow more citizens to engage with the university The group focuses on plants endemic to the Free State, and Bloemfontein is a central programs. location which currently houses the main campus of the University of the Free State. Transport is often a limiting factor for the herbalists and researchers involved. The As is the case with most cities, Bloemfontein’s many hospitals have commaded the public transport and road infrastructure are good in Bloemfontein. city’s spaces for years (Figure 1.7) whereas the herbalists work on street corners and Ethnobotany often has the stigma of being a rural practice, where Bloemfontein has back yards. This offers the opportunity to see healthcare in the town differently. the Free State’s largest population, and so has the most significant possibilities to reverse this stigma. Figure 1.8 demonstrates four main criteria identify opportunities for a potential 1Fi2gure 1.6 - Separation of university and city Figure 1.7 - Hospitals dominating the built landscape in Bloemfontein 13 location within the mid-town: Occupancy Potential Sites: 1. Should be within 5 minutes’ walk of the herbalist market. The project should add to the city in terms of social networks and environmental 2. Should not be noisy or disturbing for researchers. equality. It must, within reason, avoid disturbing existing systems of people. The 3. Should not be fully utilized. current use of buildings was evaluated and documented. 4. The surrounding city should not shade its northern façade. 28mSun Light Difficulties: 32m Growing plants effectively requires that each plant gets at least 6 hours of sunlight -Large Residential Difficulties: Component -Scale of 5 Minutes’ Walk each day. The surrounding city structures should not prohibit sunlight from -Sunlight Limited to surroundings -Sunlight Limited to Currently, the herbalists sell their goods in Fichardt’s Street, outside the bus reaching the site. East and West-Edge of Walking West terminal known as ‘Central Park.’ The yellow dashed lines indicate a 5-minute walk Range -Existing Structural Systems from Central Park. From this list of possible sites in figure, with each is discussed individually and the Noise Level benefits of each considered (Figure 8). 1,560m2 21,742m Researchers need relative quiet to focus on their projects. Noise pollution across the midtown is shown in red. 50m 120m 72m Difficulties Difficulties -Noisy Road Pre-Primary School Parking -Edge of Walking Paint Citroen Electronics -Noisy Road -Size of site Parking range -Existing buidlings -Well used school VARIOUS STORES Citroen Service 3,407m2 would be difficult to 1,900m2 adapt 75m 2,505m2 Difficulties Difficulties -Noisy Appartments -Would need to and School accomodate -Noisy Road parking for courts -Size of site -Edge of Walking 64m Armoured Transit -Existing buidlings range Difficulties Depot would be difficult to -Noisy Appartments adapt Parking and School -Used continuously -Noisy Road -Sunlight Hindered by 1,726m2 buidlings to the north 24,921m -Edge of Walking range 85m Difficulties Private Park -Size of site -Out of Walking Range -Historic Context 88m 2,831m2 -Existing park Difficulties -Size of site -Out of Walking Range Parking/Events -Hidden away -Existing Park 3,860m2 Existing Higher Education/Research Site Potential Site 1Fi4gure 1.8 - Bloemfontein Mid-Town Figure 1.9 - Focus area site analysis 15 Unused Residential Office Residential Panel Beaters 1.3.4 Fountain Street (25-27): This selected site consists of three erven and two structures. The western building covers two erven (Erf 2271 and 2272). It consists of a co-working office space/coffee shop known as Green Express Café (Figure 1.13). This establishment occupies the front half of ground its floor. The building’s upper level is abandoned, filled with rubble and poorly kept. The second erf (11335) stretches between Fountain Street and Selbourne Avenue (Figure 1.12). It consists of two stories of basic student accommodation. The development is characterized by a rambling set of additions such as carports and extra rooms. Figure 1.10 - Servitude Figure 1.11 - Descrete southern street front Figure 1.12 - Boundaries in orange 1Fi6gure 1.13 - Selected Site Figure 1.14 - View from fountain street 17 1.4 Conceptual Approach? 1.4.2 Implicit-Explicit Individual memory is achieved through two means of 1.4.1 Touch Stone explanation, the implicit and the explicit. Implicit /ɪmˈplɪs.ɪt/ - suggested but not communicated directly (Cambridge English Dictionary, 2019a) Explicit /ɪkˈsplɪs.ɪt/ - clear and exact (Cambridge Rarely English Dictionary, 2019b) do we as people see plants solely for their physical form, we attach memories, landscapes, uses, myths, and our preconceptions or understandings to them. The touchstone represents this by having the Figure 1.17 - Memory Types plant placed on a sterile plate lit from below to show the fact that it is removed from its context and is under scrutiny. The glass plates then explain our layers of projection, in the case of the soetdoring it represents the presence of water and excellent grazing opportunities for farmers. To entomologists, it is not only a part of a micro-ecosystem but also can be used to pin specimens. To a herbalist, the bark, sap, and thorns are used to treat patients. Each has a set of lenses through which they see the same plant. The project aims to be the frame to experience multiple lenses at the same time. Ideas and people are congested, allowing for a greater understanding of the plant. The magnifying pane shows how when the observer looks through the device at the plant; they look with a focus The explicit. on a specific lens. The project’s focus is on how the architecture can change how the plant is seen by introducing new information and s ive The project is inherently changing the focus. t rra involved in both aspects of memory. Western a f N knowledge is transferred through explicit description while the eil o ethnobotanic is embedded in stories. The city’s built form is an explicit set of it Vic objects while the way citizens use them and how they came into being is often an implicit tale. If pl m the viewer objectifies the model, it is clear to see that it is explicitly built from a concrete base. It represents the act of the city I grid, taking over the flow of the spruit. If the viewer explains the model from within they would describe the veil and the feeling of being encompassed. Neither is wrong; they are different aspects of the model. 18 Figure 1.15 - Touchstone Figure 1.17 - Concept Model Implicit - Explicit 19 Existing trees which bind the Individual suspense of reality . 1.4.3 Performance Anchored in the existing city but also connect to the 1.4.4 Congestion possibilities of the heavens above As the Bloemfontein and its supporting infrastructure expands, there are fewer ‘unknown spaces’ beyond the city. Until there is noting but The city itself is explicit in the way it stands within the landscape. However, the networks operate on individual Knowledge must be performed for imagination and connection with the tales, and how they interact, where the tales come together, become nodes of intensity. The city is the ‘new wild,’ it to transfer from one person to heavens which man and our urbanity bring it into being. another. The Sotho people share expertise through the structure of For well -functioning urbanity, three fundamental needs should be addressed (Figure 1.20). These needs are Density, stories and an implicit understanding The growing gaps and less realistic structures Access, and Mix (Dovey, 2016:17). The city works through bringing different kinds of activity people and buildings of the world around them. The represent the further into convenient proximity (Dovey, 2016: 25) to create nodes of intensity. This is where the ‘chance like’ nature of freedom from the city and privacy that height city life is strongest. They are the structural core of urbanity but not enough to create urban intensity alone. provides within the city. Growth is a Everyday life within the city is infused with appropriations. The city’s space is territorialized by its citizens. Street experience of what remedies are performative action, transforming the vendors set up shop each morning while couples spend their leisure time occupying benches along the spruit. appropriate for what ailment the frame structure it occupies Design can prevent spaces from myths imply. The growth of each Imagination is freed aseach privacy is further being used in certain ways but cannot story is interlinked with a multitude distanced from the rigid city and moves closer to determ ine whether they will be used in of other stories to describe our whatever our fantasy a certain manner. In other words, design situation within the world. Where involves cannot create the congestion, it can only Performance as an not hinder its formation. isolated block of knowledge linked On a smaller scale, this project works by the frame Realities are suspend- upon this principle. It places ideas and The city block as ed in their own levels these stories tie together represents the stage for these of privacy ways of thinking in very close proximity performances the well-known aspects of the stories to one another. These are separate and where they are inherently secure. worlds, and the idea is not to dilute each Each individual’s understanding grows other but rather enhance their difference for new ideas to Realities are suspended like a plant through the structure of form. New York in the 1970s is an example of this whose in their own domain of these stories. privacy ideas w ill be used within the context of Bloemfontein. Figure 1.18 - Concept Model: Performance Both cities’ ground planes are currently pre-existing Pre-Existing concrete Western medicine on the other hand has, since performs for the city. This performance has tended had a western influence tend to see the implicit as concrete realities and so must be carefully analyzed reality which is the and considered. This plane is practically driven and is Figure 1.20 - Urban DMAthe days of Descartes, tended to focus on explicitly to be one of the rigid grids multiplied vertically, as nothing more than stories. Thus, seeing ethnobotany city governed by the public. From there, each floor is an individual domain which is slowly freed from these practical explaining ailments and what removes these depicted by the western approach. This has not and the herbalists who engage with it as nothing realities and brought into the realm of imagination. “On each floor, the Culture of Congestion will arrange new symptoms. Its structure works like that of a uniform allowed for life within many of the city blocks of more than storytellers. Further, it enforces the and exhilarating human activities in unprecedented combinations” (Koolhaas, 1987: 125). This excitement of grid, once a subject is understood and expressly Bloemfontein. The model (Figure 16) shows life viewpoint that the city is not a place of storytelling possibilities happens within each building through its mix of programming but also between buildings. described, its research paper is a concrete fact, and it coming from the concrete reality of the city, aided by and imagination. The architecture represents an put in place. the structures (architecture) built on the block. interaction between the two forms of memory from the same block. It heightens their differences and Figure 1.19 - Concept The large block represents the concrete reality of The quest for specificity has driven a divide between possibilities for interaction by placing them in such Model: Congestion the city and its layout. On top of which architecture the two means of explanation — many who have close proximity. 20 21 Unlike Bloemfontein, New York is a city with little But what does the grid do? to no manifesto yet lots of realization. This culture The grid is inherently an authoritarian and rigorous of realization and retrospective manifestos began exercise in planning which leaves little to the with the cities first gesture of setting out the grid imagination. The grid as the first move limits the as the first idea (Figure 1.21). The overwhelming influence which nature has on the city’s buildings. and robust nature of this first move has lived Instead of starting with an irregular site, the through the city as its defining essence. architects begin with a stage onto which the design Bloemfontein is a city which has been built off a may perform (Figure 2.1-2). The stage is then deep nationalist manifesto which shows power multiplied vertically by adding floors, each floor and dominance over the landscape it sits within. added draws the floor further from the realities of This is shown through its grid and architectural the city and toward a world of pure imagination interventions which attempt to make sense of (Figure 1.27). This vertical movement also allows for their surroundings by order (figure 1.22-26). a closer connection to nature as it is disconnected These interventions have largely been built with from the concrete city below. the manifesto of a single client ‘the government’. This means that the city was able to construct many buildings which follow a singular manifesto. Figure 1.22 - 1848 Initial Layout (Auret, 2016: 197) Figure 1.24 - 1904 Grid molds to the topography (Auret, Figure 1.26 - 2015 Bloemfontein’s expansion and loss of 2016: 202) green space (Auret, 2016: 209) In contrast to this dominance, the city This lack of imagination and connection to nature simultaneously takes a position of submission in the city planning, leads to each stage containing to the landscape. It is strategically protected creativity within itself. Each block becomes a by the surrounding koppies and is built around paranoid critical island within the lagoon of the city the water source . The first gesture in midtown and has an intense and distorted relationship with Bloemfontein was a grid pattern as in New York reality (Figure 2.1). Due to the scale of congestion in but has not had as much realization over time. Bloemfontein, each block has not been taken over However, this grid pattern was informed by by single structures but rather an agglomeration natural flow of the spruit (Figure 1.22). Due to of paranoid critical structures together on their the slow nature of realization in the town, there islands within the lagoon of the grid (Figure 2.2). was a strip of wilderness which penetrated its However, each block still performs as a stage, and heart. The winding spruit humbled it to the what happens on that stage is determined by the untamed landscape. But the two halves of this program. town were then stitched together by the bridges of its manifesto over the years (figure 1.23-25). Figure 1.21 - 1807 Comissioners Grid Plan NY Figure 1.23 - 1867-1869 Expansion of the Figure 1.25 - 1912 Canalization of the spruit (Auret, 2016: Figure 1.27 - Skyscraper as a utopian device to produce an 22 (Kemp, 2893: 87) Grid (Auret, 2016: 199) 204) unlimited number of virgin sites (Koolhaas, 1997: 83) 23 Program Coney Island became popular as it provided excitement and escape to The Downtown Athletics Club’s program becomes the buildings the realm of the imaginary, which was not present in the streetscape ideology (Figure1.28-31. In every dysfunction, there is the potential of New York. Luna Park on Coney Island archives this through the for new functionalities. aggressive mix of programming. Dreamland fabricated it through creating a city of towers which were visually stimulating and authentic “In the fantastic juxtaposition of its activities, each of the to the unrelenting change demanded by the culture of congestion. This club’s floors is a separate installment of an unpredictable acceptance of outer change was not present within the city due to the intrigue that extols the complete surrender to the definitive lobotomy of buildings. This is not to say that the great lobotomy had instability of life in the metropolis.” (Koolhaas, 1997: 153). not been built into effect within these buildings, but rather their facades relationship with the outside world were more honest to the interior Figure 1.32 - Early design section - congestion and initial lobotomy program (Figure 1.37). Each structure needs to be inventive, critical and The juxtaposition of activities and smooth planning cause congestion, demanding of the city it finds itself within. which itself creates demands which are reproduced naturally and Figure 1.38 - Early design section indicating the buildings relationship to its site artificially through the technology of the fantastic. The building becomes a city within itself, thus transforming into infrastructure for This approach challenges the fundamental relationships the rooms within it, just as the roads of a town are to their blocks. within architecture. The site is no longer the home from which a building is born but rather stage on which it The culture of congestion demands that there Is the constant change Figure 1.33 - Early functional diagrams performs. The program of this architecture becomes the ideology, and the architecture itself becomes and so an architect cannot design an honest façade to represent the the arrangement of the technical apparatus which program of the building. Koolhaas sees the façade as the means of compensates for the loss of reality (Figure 1.35-37). protecting the public from the writhing changes within the structure. This great lobotomy allows for a monolithic street experience yet still Figure 1.35 - Radio City Hall - Technology of the Figure 1.39 - Early design section indicating the technology of the provides for program flexibility and thus change within the designs fantastic (Stage Elevators) (Koolhaas, 1997: 215) fantastic controlling the interior climate — this ethnobotany project questions whether there should be a Figure 1.29 - DAC boxing and lobotomy at all. The writhing changes are a direct result of urbanity. The technical apparatus is referred to as the technology of oyster bar (Koolhaas, 1997: How we, as citizens, use Bloemfontein is dynamic and so why should the fantastic (Figure 1.38-39). It is the application of scientific 154) the city’s built form remain static. knowledge for the creation of a false reality. This reality is the new Figure 1.34 - Conceptual function stacking wild, and man creates the world through the city. This creates a more intense reality of ethnobotany for the public to experience. Ethnobotany becomes an experience which takes over rather than This way of thinking determines that the program should provide the an objective way of learning. The design is the infrastructure which underlying assumptions about the worlds that the design is creating. allows each space to operate and transform the perceptions of The institute’s program mixes leisure, research, teaching, and business ethnobotany. The building provides the framework from which as to encourage congestion within the city (Figure 1.33-34). As an the building can be critical of what it means to retain and perform element of the block, the architecture aims to create a unique and knowledge within the context of Midtown Bloemfontein. Human- intense experience of ethnobotany for those that encounter it. made systems aim to provide a heightened connection to the natural world than what wild nature archives (Figure 1.6). Figure 1.28 - Downtown Athletics Club Figure 1.30 - DAC typical floor Figure 1.31 - DAC indoor golf Figure 1.36 - Rockefeller center: Man at the Crossroads (Koolhaas, 1997: 221) Figure 1.37 - Globe Tower 2(D4AC) section (Koolhaas, 1997: 154) plan (Koolhaas, 1997: 154) (Koolhaas, 1997: 154) The retention and performance of knowledge version 2 (Koolhaas, 1997: 72) 25 2 Challenges 2.1 Topology Related Challenges This chapter introduces some of the complexities inherent in the various 2.1.1 Being Critical of surroundings aspects of this intervention. There are three main sections being topological, To the east of the site is an automotive workshop which is neither inventive typological and sustainability challenges with in each these the morphological nor is it critical in its design. However, through its use, it demands that the challenges are approached. Each section begins by exploring these ideas and cities spaces are used for more than one strict function. The structure was ends by taking stock of what has been learnt in the form of precedent studies. remade into various applications over the previous years, forming a phantom A wide variety of reading and analysis of existing spaces help explore the ideas architecture which “nowhere betrays the slightest trace of its original purpose presented. Within this process, there are reviews of specific precedents which in any way” (Koolhaas, 1978: 104). Further, its operations take over the influenced various aspects of the design. sidewalk along the spruit, questioning why spaces are dedicated to a single purpose (Figure 2.5). The modernist parking garage criticizes this messiness in the city through its perfect planning and strict order. However, it has been so rigid that it cannot be taken over as the town messily reinvents itself, and so the ground floor specific business areas remain empty (Figure 2.3-4). The project is critical of what it means to perform knowledge and what it is to retain that knowledge through implicit or explicit means. It is critical of the lack Figure 2.3 - Fountain Street surroundings of inventiveness within the block and surrounding city. It questions the perfect human-made orders proposed by the parking garage adjacent while accepting its position as a planned development. More than this its surrounding cityscape is not sensitive to Bloemfontein’s natural landscape. The few greenspaces which exist are filled with alien water Figure 2.1 - City of the captive globe (Koolhaas, 1997: 295) intensive plants. On the site itself, there are multiple alien tree species which do not represent the region. Rivers in the Free State can be seen from a distance as they foster life and allow larger trees to grow in the dry landscape. The concrete bed and large amounts of paving which have been added to the spruit do not allow for this life. F2i6gure 2.2 - Islands of Bloemfontein performing Figure 2.4 - Canalization of the spruit Figure 2.5 - Cars being cleaned 27 To the East, the The pedestrian The servitude is The Spruit Spruit culminates walkway has currently culminates in the with the bus rank. been taken over closed by a stadium complex for the cleaning steel gate. and Kings park to of cars from the the West. Mahindra and Moto-Inn. 2Fi8gure 2.6 - Selbourne Avenue 29 2.1.2 Connection to existing green space 2.1.3 Servitude The development sits along the Bloemfontein Spruit and so There is a 3.76m servitude which runs through the selected site (Figure 2.13). This servitude is connected to the ‘green belt’ of public space which runs provides for the passage of people on foot across the site without hindrance. The original through the CBD from King’s Park to the west (Figure 2.10). function of the servitude was to give access to internal sites which did not boarder on either This park has a rich botanic tradition that has permeated road. It is essentially a pedestrian road, a public space. The idea of having a public space run the city’s identity in its popular name becoming ‘The City of directly through a site has been expanded on by turning the ground plane into a public gardens Roses.’ Its permeance as a land mark in the city is shown in Figure 2.7 - View of site from the spruit (Figure 2.12). Currently the has been treated as a road for vehicles, it is completely paved and figures 1.22-26. This botanic tradition is different from that of offers no relation to how a human would interact with it (Figure 2.11). Currently the Green an ethnobotanist’s culture. King’s Park’s tradition is rigorously Express Café is attempting to do exactly this by placing pallet furniture in this space. The public ordered and explicit (Figure 2.22-23). The gardens are gardens aim to provide a more permanent softening of this harsh enviroment. The parking manicured into hierarchy’s, and axes, the plants within it are garage to the west demonstrates where the original servitude between sites was incorporated carefully grown in an unnatural climate to celebrate notions into the design (as explored in ‘3.0 Technical Challenges’). and people beyond Bloemfontein. The park imports ideas of Europe through its name, the plants, and its monuments. This void space has a strong presence whenever I draw the site from memory or conceptually (Figure 2.13). The void area currently acts as a mediator between the two buildings on the Ethnobotany is entirely regional and relies on the natural site. It also serves as a means of negotiating the open expanse of space to the south and the landscape and the viewer’s imagination for ordering. The looming presence of the city mass to the north. The servitude does this by splitting the block into myths order and guide the Sotho people’s understanding of Figure 2.8 - View of spruit from site Figure 2.9 - Pedestrians on the north bank individual buildings rather than a singular agglomeration of buildings. The final design preserves the world, and this shows the engagement with imagination the ability to traverse the site unhindered as a reminder of the city’s past lives and the phantom to understand place. However, the city is man-made, the architectures which persist in the city. Figure 2.12 - Conceptual approach to site canalization of the spruit further reduces the site’s natural landscape to draw from. Thus, the layout of these gardens must draw inspiration from the imagination of the users as explored in figure 2.24 and ‘2.2.2 Enhancing an experience or understanding’. The Spruit is one of the main pedestrian routes through the town (Figure 2.14). During the winter months, the northern bank fills with slower-moving pedestrians who occupy the benches along the way. The spruit acts as the city’s public leisure space, and so the intervention must add to this existing pattern of city life. The southern side accommodates faster-moving pedestrians even though there is no specific pedestrian path on that side of the spruit. However, in summer, the northern bank is preferred due to its trees and buildings’ shade (Figure 2.9). The project supports this system by offering its ground floor to the public as a shaded pocket park (Figure 2.10). 30 Figure 2.10 - Green-Space Systems Red-Private Orange- Access Controlled Green-Public Figure 2.11 - Humanizing the servitude by Green Express Cafe Figure 2.13 - Servitude 31 Kings Park Gardens Put Put The Presidency Catholic Gardens Pres. Brand St. Green Corridoor Ethnobotany Institute Anglican Gardens Library Hoffman Square Motheo FET College Spruit Green Corridoor Figure 2.14 - Pedestrian movement along the Spruit 32 33 Central Park Bus Station Taxi Pickup Point (Peet Ave.) Long Distance Taxi Rank Pedestrians Lingering Anglican Church Gardens The Presidency Gardens President Brand Street Taxi Pickup Point Shanghai International Cruise Terminal: Shanghai Scale Binding Skin Chandelier SPARK Architects Although each office building is already Shanghai, China visually similar, the addition of identical Focus: Structural Systems – Relief Spaces skins which do not cut back at the edges provide a visual continuation when viewed The brief required thirty percent of the land should from the park or opposite side of the river remain free for the people of the city while half the (Figure2.15-17). This visual link horizontally floor plate area should be underground. This is to allows the buildings to be perceived as a counteract the density of the city. The design creates single slightly disjointed building without a series of relief spaces within the city along its being overwhelming to those who are waterfront public park. This is an addition which forms close. The giant order of these repetitions a part of a masterplan of interconnected, walkable, allows the buildings to sit comfortably in green spaces up to the length of the Huangpu River. terms of both the vertical and horizontal scale when the 88,000 tone cruise ships Relief in the city dock alongside the park. Along the length of this newly created park, there are When the skin is illuminated at night, various spaces which break the monotony of office the flowing herringbone structure is lit buildings and mall spaces. One of these relief spaces up, creating a sense of freedom among is the ‘Shanghai Chandelier,’ it brings whimsical fun the rigid grid found on the facades into a rigid and controlled city (Figure 2.18-19). The behind. This façade does not reach the Faberge eggs house bars and restaurants to aid in the ground and so does not provide a clear creation of a cultural. By lifting the pods into the air, connection to the ground, the disconnect the pedestrians can look through the arch and onto aids in the ambiguity already explored in the park in front. Shanghai is notoriously packed and the chandelier and surrounding sunken to glimpses through buildings into open spaces are courtyards. rare. The fact that these pods hang adds dynamism to Figure 2.15 - Skin Figure 2.16 - Skin an otherwise straightforward structural system. The design explores ambiguity in terms of where the ground is and why that matters to architecture. The design developed into a honeycomb of sunken courtyards onto the floors below where buildings Figure 2.19 - Skin disappear into. This differentiation between the below-ground floors, ground and above ground is deliberately obscure and is a commentary on the traditional Greek typical responses to meeting both the earth and sky. 34 Figure 2.17 - Scale binding facade Figure 2.18 - Shanghai Chandilier/Faberge Eggs 35 2.2 Typology Related Challenges 2.2.1 Gardens Gardens are places of prospect and aspect. Prospect is the region which is being overlooked, unaware of its intricacies, while aspect is the view from a specific vantage point. This is important because, in the landscape, the prospect of a area is the same for all those who encounter it. Yet their specific vantage point or lenses used to see the area will never be Figure 2.20 - Stonehenge (2000 B.C.) Figure 2.21 - Walled Gardens (Middle Ages) Figure 2.22 - Renaissance Gardens (16th Century) the same. Knowledge over time has taken the same relationship between prospect (that which is not understood) and aspect. Man-kind’s first gardens were monuments such as Stonehenge (figure 2.20). This monument is a means to make sense of one aspect of Amesbury’s wild and untamable prospect. It represents orders and understanding within the place and is connected to other such places in the sea of prospect through lay lines. In King’s Park, one of the first moves was to place willow trees. These willow trees were a means carefully looked at, it becomes a place of aspect. Knowledge of ordering the prospect of King’s Park. The objects in is no longer something which must be rigorously accounted the park tell stories a for; it can be held in objects, stories, and places. King’s To U Lion’s DenFPark’s master plan of measured order has been overlaid S with many individual ideas about the aspect for people to Mountee Memorial In the middle ages, the gardens ignore the experience freely (Figure 2.23). They refer to the measured order but are not solely based off it. This allows for untamable wild as it was too great a task to make sse ou sense of (Figure 2.21). The gardens focus on the interpretation and imagination, which is revered amongst en h e Royal Rose GardenModel Sailing Pond understandable ‘inside.’ Knowledge at the time the city’s strict grid. Gr became internalized and for the wealthy. This UFS Axis culminated in the Renaissance when gardens When members of the public encounter this project, they have a similar understanding of how it is set out. The task became an exercise in perfect order and complete understanding in aspects of their design. Over time of the hanging gardens and exhibition is then to depict the paths in the park were set out, and it was further different aspects of ethnobotany and spark imagination ordered through perfect avenues of neat plants. within them about the world which surrounds them. To picture is to tell stories of a place and engage with it. This To Mid-Town The gardens have continued the lineage by adding interaction is a process of meaning, both projected onto layers onto the perfect order (figure 2.22). This turns space and constructed by it. the park back toward a place of prospect, but if 36 Figure 2.23 - Gardens of memory (2019) 37 2.2.2 Enhancing an experience or understanding The ethnobotany institute must enhance the understanding of ethnobotany for the genera public. The design must also enhance the public’s understanding of what Bloemfontein is. Cony island was a place of intense experimentation. It erased the natural landscape to construct a total synthetic environment (Figure 2.24). This environment fabricated almost any sensation and is referred to as the technology of the fantastic. However the city is encountering a shift, the redevelopment of the spruit is more “Coney Island was the site of unsustainable compromises between imaginative. Each bollard is individually painted and where there could have been pairs of opposites: lowbrow and highbrow; artificial and natural. The Figure 2.25 - Suburban Park a mundane overpass there is a unique steel bridge (figure 2.6 & 28. The trees along Technology of the Fantastic versus the Urbanism of Good Intentions. the spruit are dynamic when compared to the stately evergreen trees planted The former eventually gave way to the latter and as that happened the along president brand street. Brand street uses these alien trees as a way of once-vital place began a descent toward irrelevance. Something similar importing ideals from another society. has occurred outside of Coney Island’s dreamworld: Technology has become less imaginative and more responsible.” (Austin, 2012:1). Imagination frees the mind of the mundane responsibilities of life. It removes those nagging things which we believe to be ‘knowns’. These ‘knowns’ limit our thinking and capacity to understand something new. This is not to say that they aren’t true, but our realm of possibilities is reduced every time we hold on to one. Figure 2.27 -Foot Bridge The design incorporates this imagination structurally by hanging the floor slabs from a girder rather than being clearly supported by a column and beam system (Figure 2.27). The design uses traditional building materials such as steel and Figure 2.26 - Pres. Brand Street timber, however they are used to the technical extreme. The timber is laminated to unique curves while the steel is as thin as technically possible. This gives the impression that the buildings various elements are floating. This inspires the I believe that this responsibility of technology is what has led to the monotony exploration of a fantasy world where anything is possible (Figure 2.24). Technology and lack of relief within the city of Bloemfontein. The urbanism of good allows for the plants to be experienced in a more intense way that what could be intentions is seen throughout city planning in Bloemfontein. The suburban achieved in nature through the way in which they are displayed. The density of neighborhoods are littered with desolate parks which house a generic steel plants per area can be much higher than if one was searching the wild. swing and play set (Figure 2.25). The sidewalks throughout the mid-town comply to the responsible regulations but do nothing further. President Brand Street is the epitome of this time, it is responsible and ‘highbrow’ (Figure 2.26). This is due to the conservative heritage of the residents within Bloemfontein and how they have planned the city. I believe the ideals that Bloemfontein was planned on are responsibility, dignity and authority. These spaces do not serve the practical needs of modern society. Figure 2.28 - Steel Girder Structure 38 Figure 2.24 - Conceptual Perspective 39 The Cocoon 2.2.3 Humanizing the research space AA Design & Make Hooke Park, UK The research space is the contrast to the imagination and magic of the garden space. They have many practical Focus: Bandage Structure – Relief Spaces needs and represent the responsibility of technology to modern society. However there are humans who work in The institute should heighten the the rigorous order. Their humanity and wonder must be experience of ethnobotany as explored cared for. in New York. The Cocoon is designed to heighten the experience of walking through Department of Microbiology, UFS the surrounding forests. It’s intimate Renier Bron scale invited the user to rest against its Bloemfontein wall as they clamber trough the cocoons Focus: Laboratory Requirements – Gathering twists(Figure 2.29-30). These twists create to allow the user to imagine what is coming Laboratory spaces are functional spaces and offer little next and allow the smell of the wood to scope for interaction. The design articulates elements of be more intense. The uneasy experience its structure as to make the building more human and Figure 2.32 - Department of Biotechnology of moving over tree roots experiences on understandable to those who work there (Figure 2.32). the forest floor is replicated through the This is a reaction against the typical sterile laboratory undulating floor. The light falling through building facades and internal spaces while remaining the roof provides a similar speckled light functional and sterile inside. to that on the forest is what heightens the experience. Courtyards The multiple courtyards provide relief from the sterile lab environment and allow for gathering in an individual The experience which the design creates is work environment (Figure 2.33). This is signified through focused on the magic and implicit aspects of Figure 2.29 - Cocoon the tree in both pot plants, benches, and partial shading. African storytelling rather than the process This leads to them being the spaces where creativity is of walking through a landscape. fostered, and staff/students can informally discuss their Figure 2.30 - New Perspective offered projects with one another. These spaces humanize the research environment, which is otherwise clear cut and clinical through their materiality. The courtyards are paved with brick pavers and are supported by the whitewashed face-brick walls which add natural light to a synthetic lit building. The trees in the courtyards add to this natural materiality and provide space to gather in the shade. Figure 2.33 - Department of Biotechnology 40 Figure 2.31 - Construction of pods 41 2.3 Sustainability: The Natural The theme of this project is investigating how architecture can - offer alternate perspectives of ethnobotany in the city. This Acting restoratively main theme breaks down into three sub questions developed toward the natural in conjunction with the three concepts. The goal of this is the environment. meaningful making of place within the city for the occupants of 2.3.1 Place the buildings and the people of the city. The intervention “realign(s) how people understand and relate to the natural the natural state that the site would be in without the influence of environment that sustains us” (International Living Future Institute, 2016, man, regarding “biodiversity, plant succession, water use, and nutrient Conceptual and Ethical Aims p. 23). The design relates deeply to the place, thus restoring the nature of needs” (International Living Future Institute, 2016, p. 24). The design Sustainability is a broad and all-encompassing concept and so the the place. The design encourages pedestrianization and livability within the The Social increasingly promotes and emulates the reference habitat (Free State purpose this section is to define what the project will to address. Bloemfontein CBD through four key areas.- Grassland) of the site as it matures. The development increases the “Opinions largely vary on how to define the sustainability The project must further Adaptive Re-use natural habitats available to the biodiversity identified as being within the leisure opportunities on i challenges that architectural design is to respond to, how The project is built on a greyfields site. Gamble & LeBlanc define the reference habitat. Due to the dense nature of the city and its ts place along the spruit to make to align the various stakeholders involved, which scales greyfield sites as those which are “economically obsolescent, manicured green spaces, it loses many indigenous species. This project the city more livable. Further it and elements to consider, and how to transform these should bring different members outdated, failing or underused” (2004). provides a habitable island from which the species (both plants and questions into design strategies, spatial configurations, form circles of society into animals) can thrive. and materiality of buildings. These practices cannot be contact with Urban Agriculture confined merely to technological problem-solving as they eachother. For cities to become truly sustainable, they cannot rely on a global essentially mesh a range of cognitive, social, cultural, and infrastructure and so must produce their own produce. Currently, Ecological Transportation material elements.” (Schroeder, 2018). the plants are grown/harvested in the rural Free State and imported The project contributes to the creation of a walkable and pedestrianized into Bloemfontein. The design sufficiently provides for the needs of community within the Bloemfontein CBD. It provides secure storage The second function is that it provides a framework that can for human-powered vehicles such as bicycles for all staff and visitors. be referred to within the design process as a yardstick for the herbalists in Bloemfontein and its surrounds. This reduces the carbon Existing pedestrian routes such as the street frontages of Fountain success of its sustainability. The approach is based on the ‘Living footprint while ensuring sustainable harvesting practices. Currently, street and Selbourne Avenue along with the servitude across the site Building Challenge Standard 3.1’ and centered around seven The Historic the plants researched by the University Department are grown on enhance and make the city more walkable through affordances such aspects of ecological and social sustainability. Its essence is in line - the UFS experimental farm on the outskirts of Bloemfontein. This as shading and even walkable surfaces. Showers and locker rooms are with the conceptual basis of the touchstone (Section 1.4.1), which The design must respect development will eliminate a large amount of travel carbon for its place as an institution along provided to encourage the use of human-powered vehicles. There is an is to imagine the city differently. In this case, it is to redefine the the spruit while engaging researchers while adding the benefit of more productive workdays. electric vehicle charging station for those still with a car. city’s view of sustainability. with the city. Focus: Imagining the city as Habitat Rehabilitation “The ecological approach to urban open space planning and - Being informed by the Free State climate management [in Bloemfontein] is a sensible and achievable - Generating its own resources objective” (Dingaan & Du Preez, 2017: 1). The reference habitat is - Socially, culturally and ecologically restorative The Cultural - A place where every building contributes to - the city becoming more livable The architecture must respectfully engage with ethnobotany in a namable and memorable building. 42 Figure 2.34 - Sustainability factors 43 2.3.2 Water Grey Water System This aim intends to redefine how people view water wastage within the Bloemfontein CBD. Due to the site size and location of the site within the Bloemfontein CBD, Bloemfontein often has water issues such as poor quality, waste, and distribution, not to mention there is not a large amount of space separate from the public activity the waste and stormwater issues adding to the pollution of the spruit. With climate change, these where a greywater system can be placed. This offers the opportunity to problems will only grow, and so the building needs to account for this if it is to last and remain relevant incorporate this system into a public space where people can interact with over the next fifty years. it. The vast amount of garden required by the program can use the treated water, thus not relying on the municipal grid (Figure 2.37). The design must provide for the sites needs through precipitation and recycling used project water as much as possible. Water discharge such as grey and stormwater should be dealt with on-site using a Toilets are water efficient designs which feed into the municipal sewer wetland greywater system and stored on site. system while the basins and taps greywater will be used within the gardens to offset the water requirements of the buildings. The roof design captures Currently the office block expels its stormwater into the spruit. Downpipes are internalized and feed any rainwater on the site and will store this water in underground tanks into an underground drain to the spruit. The residential units have downpipes, which direct rainwater and pumped to a tank above which will provide pressure for the lower onto the sidewalk (Figure 2.35). The servitude is designed to direct some of this stormwater toward floors. the spruit. This is shown on erf 12467 to the west, where the development had to account for the stormwater using channels and underground pipes along the length of the servitude (Figure 2.36). 2.3.3 Energy The intent of this aim is to prioritize reductions and optimizations in energy use within the development thus changing the way in which Bloemfonteiners view energy waste. Passive means of cooling the Figure 2.37 - Greywater treatment pond detail greenhouse during the day reduces the energy load required by the building. Greenhouse Climate Control Cooling such a large greenhouse without over shading all the plants inside is a challenge and so the systems in place need to be adaptable to the Roof Area Max Rainfall Capacity Required everchanging Bloemfontein climate. However, this offers the opportunity to use the whole skin of the building as the systems for controlling the temperature inside the greenhouse. Systems such as those used on the 1992 British Pavilion (Grimshaw Architects, 2019) can be used to Figure 2.36 - Storm put sustainability at the forefront of the public’s mind. The scale of the 21256m Water Management on greenhouse allows for the academic component to be insulated within 2(Site =1526m ) 120mm erf 12467 3this greenhouse shell and so can be mutually beneficial with the academic + (Febuary) = 150,72m component heating the greenhouse in winter and the greenhouse insulating the academic component in summer. Figure 2.38 - Rainwater storage calculation 44 Figure 2.35 - Rainwater Management Currently Red - Servitude Runoff Blue - Gutters 45 1992 British Pavilion Location: Milan Water Wall Grimshaw Architects As the water falls down the glass facade to the east, Focus: Environmental Control Systems - it takes heat energy out of the sunlight and cools the Memorability space inside (Figure 2.39). Further, the falling water evaporates and cools the surrounding outdoor space to the east of the building. Solar cells on the The facades take the physical form of the roof supply the energy to pump the water and so environmental control systems (Figure when the sun is less intense, the pump moves less 2.39-44). Inside there is a void, in which water and so it cools the building appropriately. are a series of exhibit platforms along with The falling water provides a sense of suspension a pool for maritime vessels to hang over. inside the pavilion, which allows the inside to These platforms stand independently of become ‘another world’. This is the world of Great the environmental control skeleton which Britain inside. The reflection pool in front of this W E surrounds it. facade gives the pavilion a monumentality and Figure 2.42-44 - 1992 British Pavilion climate control systems (Grimshaw Architects, 2019) Figure 2.45 - 1992 British Pavilion climate control systems Britan’s naval history endows the skeleton classical permanence. with meaning, declaring what the pavilion Solar Fins represents. It has allowed the structure to To reduce solar heat gain in the hot climate of become so memorable and namable that Figure 2.39 - Water Wall Seville, the architects opted to place a series of it was made into a stamp. The design uses fins on the roof to reduce how much sun hits the bold architectural moves such as the wing physical roof itself. The gap between the fins and roves to achieve social sustainability, through the roof allows for the breeze to flow through and memorability and significance. cool the surfaces (Figure 2.41). On these fins, there are a series of solar cells which provide the energy Interior Climate Control required to run the pavilion’s pumps, lights, and To the west, the walls are made of large small HVAC system. reservoirs which then have a skin of material Rigging as Inspiration fins to keep the sun from heating them Both the North and South facades incorporate directly (Figure 2.45). At night the air is canvass sheets to protect the building from the cool and this then cools the water in the Figure 2.40 - Fin Wall harsh sun (Figure 2.40). These canvass sheets reservoirs sufficiently for the water to be and steel structure intemperate Great Britain’s used again in the day. They store the water maritime culture and craftsmanship into an efficient which is pumped through a large panel within environmental control system within the building. This building demonstrates how a high-tech the design in order to cool the main hall, this architectural building can be sustainable in its daily greatly reduces the heat load that the small operation through simple systems. HVAC system needs to disperse. The high volume of the interior allows for the hot air to rise where it is naturally ventilated out of the building using high level windows and prevailing East-West winds. Figure 2.41 - Roof Fins Figure 2.46 - 1992 British Pavilion N-S Section 46 47 2.3.4 Health Eco Boulevard The intent of this is to redefine what those who use the Bloemfontein CBD see as a Location: Milan healthy and acceptable space. It aims to promote a productive, nourishing and healthy Ecosistema Urbano built environment over time. Focus: Nature in the city Access to Environment The eco boulevard project is not intended as a final Each regularly occupied space has openable windows that provide access to solution but rather as a temporary prosthetic for the city’s fresh air and light (Figure 2.47). The design promotes a connection between rejuvenation (Figure 2.51). In this case the space is not nature and the occupants of the building through its planning and program. used and this aims to make the space more attractive The design accounts for the changes in climatic conditions throughout the year for recreation to the micro climate of the space being without the reliance on mechanical systems. cooler than its surrounding. This idea could also be used to enhance existing dense public spaces to become more Air Quality livable for their inhabitants. It allows the plants to form Exhaust systems should be provided for kitchens, bathrooms, laboratory and dense habitats raising multiple levels. Once the rest of the janitorial areas in order to maintain a high quality of air within the building. park has been propagated these towers are to be taken down and the spaces left behind will remain as clearings in 2.3.5 Equity the garden. The structure demarcates a social space under The aim is “to make the world work for 100% of humanity in the shortest possible Figure 2.47 - Access to nature within a high rise itself and raises its-self clear of that space so it may be used time through spontaneous cooperation without ecological offense or the disadvantage as its inhabitants please (Figure 2.49). of anyone” Buckminster Fuller. The development should enhance the infrastructure provided to the holistic community within the Bloemfontein CBD. 2.3.6 Beauty The aim is to redefine the sense of built environment care Human Centered Design within the CBD and along the spruit. Human delight should The design promotes and prioritizes human spaces rather than spaces for be promoted through culture, spirit, and place. This must Figure 2.49 - Eco Boulevard Figure 2.50 - Green wall automobiles, thus promoting a culture of interaction along the new servitude take the public form of gardens, art and small conveniences (Ecosistema Urbano, 2008) (Ecosistema Urbano, 2008) space. The laboratories both have a break room which connects to the city made toward the people of the city. outside and offers the chance to interact much like the courtyards within the Department of Microbiology (Page 43). Barrier Free Access to Nature and Place Universal access is into consideration for barrier-free architecture and so the development is wheelchair friendly (2.47-48). The maximum ramp slope is 1:12 within the project allowing for it to be accessible for all the users. the public spaces is enhanced through street furniture, public art, gardens, and benches. This enhances the pedestrian leisure space of the spruit which runs through the CBD. The built-up nature of the spruit and CBD means that a habitat extension is a viable approach to restoring the natural balance. This is a dense addition of nature which solves various climatic and social issues within the city. Eco boulevard by Ecosistema Urbano is an example of how this can be implemented through specific systems and approaches to the city (Ecosistema Urbano, 2007). 48 Figure 2.48 - Eco Boulevard inspiring design skin section Figure 2.51 - Eco Boulevard transforming the urban landscape 49 2.3.7 Materials Polycarbonate Sheeting Readymade sizes of multiwall The aim is to promote a local material economy which is polycarbonate sheeting limit and “non-toxic, ecologically restorative, transparent and socially guide the design process when using equitable” (International Living Future Institute, 2016, p. 43). the material. The sheeting is used Red List Materials as a roofing and walling material for The project should not contain materials which are the greenhouses. It allows for good on the ‘Living Building Challenge Materials Red List’ light transmission while providing (as found in Annexure A), these are not ecologically high R values. It is also very light with ‘Cleardeck’ claiming that its product sustainable materials and so are avoided. ‘Seplux’ weighs half that of a similar Steel is be used for the greenhouse spaces, strength glass (Cleardek, 2019: 2). Two representing the cold analytical nature of the explicit types of the sheeting are used in the research. While wood will be used in places relating to project. the implicit due to its warm nature which encourages Cleardek ‘Seplux’ interlocking panel engagement. (Figure 2.55) The columns and trusses which span the length of the This system is used as a walling system which fits between the truss structure site are made of steel. Its thin members add to the of the greenhouses. The benefit of it is imaginative nature of the place created within the that the system has no standing seams gardens. The floors of the larger greenhouse to the or lighting obstruction. The system also east will be made of steel planking to let light through does not require lateral support, and so into the hanging gardens below. The perforations is completely supported by its aluminum add to the suspense of reality inside the building as frame. These panels are 40mm thick and come in a width of 435mm. Figure 2.53 - Polycarb fixing system Figure 2.54 - Sun angle calculationsresearchers seem to float as they work the gardens. Multiwall Polycarb Panels (Figure 2.53) Below these trusses hang a series of calabashes to be constructed out of timber which will house garden These do not come as a finished system space and walkways. These calabashes will be held in but are rather a building material place by steel cables to give the sense of a suspended in a thickness of 25mm. This 25mm three wall system allows for a light reality the participant is engaging with. The calabashes Figure 2.52 - Development render of design transmission of 72 percent. Compared house implicit knowledge and so area made of wood. with the 10mm system which offers 82 percent light transmission. Thus, the roof angles remain relatively perpendicular to the suns rays in order to minimize the angle of incidence (Figure 2.56). Sheets are clamped together using aluminum profiles (Figure 53). 50 Figure 2.55 - Cleardek ‘Seplux’ connection Figure 2.56 - Angle of incidence 51 UFS Dept. Agriculture Greenhouses Glue Laminated Timber (Glulam) Location: Bloemfontein This structural engineered wood product Focus: Construction Principles is made by bonding layers of timber together with structural adhesives (Figure 2.66). The benefits of using glulam are The university uses two styles of greenhouse on that they are significantly more energy the Bloemfontein campus. One is a glass, steel efficient than steel profiles and can be and aluminum greenhouse type and the other is a constructed to complex curves (Figure newer aluminum and polycarbonate greenhouse. 2.62). The rings which make up the The first set shown in figure 2.57 are based on a hanging gardens off the design can be glass construction, the spans of glass are not very manufactured offsite and transported to large. These greenhouses have a light shade-cloth site thus making the process very space structure 500mm above the glass to protect the and time efficient. The strength of these glass from hail. The poly carbonate greenhouses do timber profiles can be altered by making not require this as the sheets are strong enough to them thicker or thinner where necessary. resist this alone. For the project the thinner profiles act as A steel structure is fastened to the slab on ground bracing while the thicker profiles gather foundation between which is the secondary the load of the structure and transfer it to structure which houses the glass panel system. the girder above. The wood gives a warm natural feel to the spaces in which it is Figure 2.65 - Connection detailEach greenhouse is separated into three climate adjustable compartments. The air conditioners for used, thus encouraging interaction. The which are located externally against the southern Bavarian Forest Treetop Walkway uses wall (Figure 2.61). This wall is constructed of brick to these to great effect in ‘3.5 Structural retain heat at night and is what the ducting system Investigations’ on page 62 and works in a and services fasten to. Currently the greenhouses similar structural system. are used for three purposes. Plant Pathology; Soil, Crop and climate Studies and plant breeding studies. Figure 2.57 - Glass Greenhouse Section Figure 2.63 - Glulam connection detail The greenhouses in this project will take the polycarbonate route as it is lighter and more durable. 52 Figure 2.58 - Glass Fixing Figure 2.59 - Polycarb Fixing Figure 2.60 - Glass Greenhouse Window Figure 2.61 - Greenhouse and Climate Systems Figure 2.62 - Glulam pod development Figure 2.64 - Glulam-Steel Connection Figure 2.66 - Glulam profile development 53 Steel (Planks too) Steel profiles are used throughout the project due 3.0 Technical Challenges to their high strength and slender form. It has a high These investigations uncover various aspects of tensile strength and so steel rods are used to hang the the project and provide design cues. They do so floorplates and pods from the girders above. By hanging by revealing the requirements, conditions, and these elements rather than supporting them the steel problems associated with the different elements rods can be far slenderer allowing for the suspension which will be integrated into a single design of the pods to be less noticeable. Hidden steel plates solution. are also used to connect the rods to each pod structure (Figure 2.63; 65). 3.1 Municipal Non-Negotiables The floor of the green house uses a steel planking system much like scaffolding planks (Figure 2.72). These Figure 2.67 - Greenhouse Gutter Beam This selected site consists of three erven and two structures (Figure 3.1). The western building are lightweight and offer the opportunity for a part of the greenhouse floor to be a mesh thus connecting the covers two erven (Erf 2271 and 2272). It consists public and greenhouse to an extent. of a co-working office space/coffee shop known as Green Express Café. This establishment The beams throughout this project are specially occupies the front half of ground its floor. The fabricated girder modules (Figure 2.69). These are building’s upper level is abandoned, filled with fabricated in Bloemfontein but off site and thus adding to the efficiency and speed of the construction process. Figure 2.68 - Gutter Beam Fixing rubble and poorly kept. This also allows the structure to be light and more The third erf (11335) stretches between Fountain material efficient. Street and Selbourne Avenue. It consists of Figure 2.69 - Girder two stories of basic student accommodation. A The gutters and capping of the greenhouse structure rambling set of additions such as carports and are typical greenhouse gutter beams (figure 2.67; 68; Figure 2.70 - Typical Greenhouse Gutter Beam extra rooms characterizes the development. The 70). These are gutters which also act as beams for the project consolidates the three erven into this new battens to be attached to. In this project they have been reinforced to span further that would be typical due to plot. The existing buildings will be demolished their structural requirements. entirely. The consolidated portion of land will contain the built structures on for the project. Composite Slab The floorplates of each story need to be as light and thin as possible to be more efficient with material use. There are no building lines on the proposed site, This means that permanent steel formwork has been as shown in figure 3.1. The site’s boundaries are used to reduce the slabs depth and thus the volume of an agglomeration of past erven and servitudes. concrete required buy the project (Figure 2.71). On top For SG diagrams, see Annexure A. For the of this slab is a false floor which allows services to be consolidated site plan, see Drawing A101. conveniently stored. It also gives the opportunity for the laboratories to easily change after the technology within becomes redundant. Once the main girders are erected on site the floor slabs can be quickly assembled and the concrete cast while the following floors are assembled. This process is quick as the formwork need not be disassembled once the slab is set. 54 Figure 2.71 - Composite Slab Figure 2.72 - Grip Strut Decking (McNicols, 2019) Figure 3.1 - Site Plan 55 3.1.1 Encroachments 3.2 Servitudes The municipality allows for infringements beyond the boundaries of the site. 25-27 Fountain Street has a Shedule Of Rights Shedule Of Rights Shedule Of Rights Property Description Property Description Property Description 8.1 A cantilevered overhanging roof may be erected over the street boundary or building line, at a height of 3.76 m servitude passageway Erf/Portion - 11335 Site Area - 970.88m2 Erf/Portion - 2271 Site Area - 292.70m2 Erf/Portion - 2272 Site Area - 263.42 at least 2,75m above the finished ground level, measured from the finished ground level to the lowest point which requires that the erf can Township - City of Bloemfontein Title Deed No Township - City of Bloemfontein Title Deed No Township Title Deed No Zoning Information Zoning Information Zoning Information of the overhanging roof. one can cross without obstacle. Town Planning Scheme Ammendment Scheme No. Town Planning Scheme Ammendment Scheme No. Town Planning Scheme Ammendment Scheme No. The adjacent 6 Fountain Use Zone Residential 002 Annexe No. Use Zone Buisiness 002 Annexe No. Use Zone Buisiness 002 Annexe No. 8.2 Foundations that are at least 0,75m under the ground level may exceed a street boundary or building line street had a similar servitude Development Control Measures Development Control Measures Development Control Measureswith a maximum of 0,5m. Permissable Control Actual Permissable Control Actual Permissable Control Actualrequirement when built which N/A Building Height 2 Stories N/A Building Height 2 Stories N/A Building Height 2 Stories 8.3 Sunshades and overhead lamps may exceed a street boundary or building line: provided that there is accommodated in the form 90% Coverage 51.05% 88.92% Coverage 88.22% 88.86% Coverage 88.12%N/A Floor Area Ratio 1.14 N/A Floor Area Ratio 2 N/A Floor Area Ratio 2 is a head clearance of at least 2, lm, measured from the finished ground level to the lowest point of such of a passageway through the 869.54 Floor Area 495.63 260.27 Floor Area 259.18 234.04 Floor Area 232.82 0mm Building Lines 0mm 0mm Building Lines 0mm 0mm Building Lines 0mm sunshades or overhead lamps. center of the parking garage. 8.4 Eaves projections may exceed the street boundary or building line (Mangaung Metropolitan Municipality, Both servitudes have gates on 2016). currently and have been locked to keep people out. 3.1.2 Side Walk Paving The municipal paving regulations need to be understood because the sites require a servitude across them (Figure 3.2.1 Development Rights 6). The municipality allows property owners to place and replace pacing on the sidewalks adjacent their buildings as This investigation spans three long as the paving fulfills specific requirements (Mangaung Metropolitan Municipality, 2016). plots which are currently “5.2 Paving or slabs must be laid to the grade, line and cross-fall pointed out by the Council and must con- separate, erf 2271 and 2272 are form to the following further requirements: legally bound. The site is zoned as an urban development zone (a) For ordinary paving or slabs, the minimum cross-fell must be 1:100 and the maximum cross-fall as well as diverse development 1:25. (Mangaung Metropolitan Municipality, 2014). This zoning (b) Non-skid paving or slabs of a type to be approved by the Council must be used for cross-falls be- Figure 3.2 - Sunshade regulations classification aligns with the tween 1:25 and 1:15: provided that the maximum cross-fall must not exceed 1:15. intended project (Figure 3.4). (c) Longitudinal grades must not be steeper than 1:25 for ordinary paving. Slabs and non-skid paving or slabs may be used for longitudinal grades between 1:25 and 1:15: provided that the maximum longitudinal grade must not exceed 1:15. 5.3 When carriage openings are formed in curbs and cross footways or pavements, such openings must be paved or slabbed 6.1 The owner or occupier of an erf adjoining a street may, at his or her own cost, grade and plant with grass any land lying between the erf and that part of the street intended, laid out or made up for the use of vehicu- lar traffic. 6.2 The owner or occupier of an erf aforesaid may plant flowers or small shrubs in a strip of land not exceed- Figure 3.3 - Paving slopes regulations ing 1 meter in width immediately adjoining the said erf” (Mangaung Metropolitan Municipality, 2016). 56 Figure 3.4 - Bloemfontein Zoning Map 57 3.3 Topography 3.5 Structural Investigations There is a 1250mm fall across the 3.4 Climate 3.5.1Exoskeleton Structures site at a slope of 1:51 (Figure 3.7). The research done by the UFS The site is bordered by Fountain Department of Phytomedicine and The exoskeleton carries the primary lateral load of the building on the exterior of the floor plate. It is Phytopharmacology focuses on often characterized by the framing structure where all loads are transferred to. In the case of some Street and Selbourne Avenue and the spruit. The sidewalk along Free sate specific plant species. This buildings such as the Barcelona Media-tic Building by Cloud 9 (Figure 3.12-14). Each floor plate hangs Figure 3.8 - Rainfall Bloemfontein (Windfinder, 2019) Fountain Street is 2.5m wide while Figure 3.5 - Wind Information Bloemfontein (Windfinder, 2019) means that rain and sunlight are off the primary structure thus the ground floor can be completely free of structural elements (Figure the one on Selbourne Avenue is not determining factors in the plant 3.14). Other solutions take the load of each floor plate out into the exoskeleton level by level. 3.5m, both are made of concrete species climate requirements. What is of concern is the precipitation and Advantages:brick pavers. adjacent water storage calculations. In •The interiors become column free There are very few soft surfaces order to achieve the sustainability goals •It makes the building instantly identifiable across the site; the only green identified, the design needs to store •Fireproofing becomes easierFigure 3.9 - Sun hours Bloemfontein (Windfinder, 2019) spaces are those beneath trees. the 180m3 of rainwater which falls in •Weight of structure (More sustainable) This continues out onto the spruit. February. The architecture should also •Can become a dual façade system easily The trees are concentrated along provide adequate shading as the sun the pedestrian routes along the hours of Bloemfontein are high year Disadvantages length of the spruit, as shown in round (Figure 3.9). •Scale is required to develop enough shear and bending resistance figure 2.6. •The façade is dominated by the structural system thus not aligning with Koolhaas’s ideals of the city Figure 3.5 shows the temperature in Figure 3.10 - Rainy days Bloemfontein (Windfinder, 2019) described earlier. There were no useful soil samples Bloemfontein as fluctuating between •Often requires precise custom-made segments to be assembled on site (Not Local and thus less available on this ‘brownfields’ site. 36.1 and -1.9. Figure 3.8 shows the dry sustainable) There is a high water table due to nature of Bloemfontein. The weak and the site’s proximity to the spruit. predictable nature of the winds on the This system allows for each floorplate to be unique yet free of bulky columns and beams. Making each The South West corner of the site site is indicated in figure 3.5. This wind floor a virgin site ready to adapt to the possibilities explored on it. It also allows for a free façade where lies on the historical path of the can be used to cool the greenhouses in the building’s face can be changed every time the function of a floor is changed. spruit as shown in the maps of summer when it is stronger. (Figures 1.22-26). Figure 3.6 - E-W Section Figure 3.11 - Relative Humidity Bloemfontein (Windfinder, 2019) Figure 3.7 - N-S Section 58 Figure 3.12 - Media-TIC main truss (Lee, 2010) Figure 3.13 - Exoskeleton load path Figure 3.14 - Media-TIC free ground floor (Baan, 2011) 59 Application: Departmental Flooring System Application: Propagation Greenhouse Flooring System within Exoskele- ton Expanded steel mesh growing trays Growing Tray Structure 50mm Roller Roller housing welded to post Figure 3.15 - Permanet Steel Formwirk (GRS, 2019) Figure 3.18 - Grip Strut (Eaton, 2019) Bond-Lok Permanent Steel Formwork Figure 3.16 - Exoskeleton load path applied Grip Strut Safety Grating Hollow Steel Section The formwork is used within the research These are used in the same manner as scaffolding component and provides the base for the raised planks. The propagation greenhouse uses two plank access flooring system. This is a single span floor slab surfaces, namely the Grip Strut surface and the Dimple system which can be quickly assembled within the Only pattern. The Grip Strut surface is used along the Figure 3.19 - Roller bed structure exoskeleton to provide stiffness during construction. These lengths of formwork are fixed to the top of walkway area in order to facilitate a visual connection the girders onto which the concrete is then cast. The and allow light into the gardens below. The Dimple Only girders then pierce the skin of the building and are pattern us used under the growing trays in order to 2 Rows of plants grown in buckets fixed to the steel rods which hang from the truss prevent debris and water from falling below. above. Figure 3.17 investigates how best to make Expanded steel mesh growing trays the various connections between the façade, girder Advantages: Rack and Pinion and raised access flooring system. • Approximately half the weight of a traditional Bar Grated solution for equivalent live load Square Steel Columns Advantages: strength • Floor slabs can be thinner than traditional • Planks are interchangeable and so the same system can be used for punctured and solid pure concrete slabs Steel wire cross bracing • The slabs can be quickly assembled on-site flooring• Quick installation times Dimpled Steel Planks• Eliminated the need for the construction and destruction of temporary formwork • Can be welded along their length to achieve a Lipped Channel • No additional reinforcing other than a light more uniform deflection mesh for shrinkage control is required Figure 3.17 - Development of flooring connection Available Lengths: 600mm – 3 000mm for a 60mm profile depth 30mm Steel Rod Figure 3.20 - Bed / Plank Spacing 60 61 Application: Hanging Gardens 1. Bracing Connections 1. Treetop path, Bavarian Forest National Park Location: Neuschonau, Germany Focus: Walkway System – Program 500 X 200 Glulam Section The wooden walkway is integrated into the treetops of the 4mm Brass Tie Screwed to Glulam Section forest. Along the path there are various ‘points of information’ which explain the mountain forest in front of the viewer as 100 X 100 Glulam Bracing well as ‘adventure’ points (Figure 3.21). Here the viewer has 2. the option to take a more adventurous route as to heighten the experience of being high in the forest. In practice these Bracing - Bracing Primary - Primary Bracing - Primary are sections where the slats have been replaces with a tight Connection Connection Connection rope, individual slats, tree stumps or a net. The concept of this Figure 3.25 - Pod connections walkway is to perceive the forest from a different viewpoint and 2. Steel Connection engage with it where normally impossible. 10mm Steel Plate with eye 10mm Steel Plate with eye The structure consists of laminated timber sections, timber 20mm Expansion Joint 40mm Steel Rod sections and steel profiles (Figure 3.21-24). The steel is used as a secondary structure and bracing. The timber relates to the 20mm Stainless Steel Bolts Countersunk 5mm Steel Tube with forest and so it’s used as the primary elements of the structure. 40mm internal diameter Figure 3.23 - Internal Walkway 500 X 200 Glulam Section Figure 3.26 - Pod steel connections 3. Walkway and Planter 3. Lined Timber Planter Timber Bench Brass Handrail Connection 50mm Timber Handrail Figure 3.28 - Pod structure cut away model 50 X 50 Timber Posts spaced at 1m Timber Decking 62 Figure 3.21 - ‘Adventure Point’ Figure 3.22 - Section, Bavarian Forest National Park Figure 3.24 - Walkway Structure Figure 3.27 - Pod walkway 63 3.5.2 Masonry Shells 3.5.3 Portal Frames These are self-supporting arch based Two-dimensional rigid frames which get forms which act in compression to create their three-dimensional strength through very stable forms. Their load path must be repetition (Figure 3.33-34). The column within the depth of the arch structure in and beam are at times combined into a order to the structure to remain standing single structural element through a rigid (Figure 3.31). They can be made of thin connection. This is the standard way in which tiles and are incredibly strong (Figure 3.29- to build a greenhouse structure (Figure 3.38). 32). Essentially, they are based upon the They are easily scalable lengthwise and same principles which gothic architecture provide a large clear span under which plants and vaults are based upon. A simple thrust Figure 3.33-34 - Thorncrown chapel timber portal frame structure (Galloway, 2018) Figure 3.35 - Portal frame load pathcan be grown. line can determine whether an arch will stand by analyzing wither that line falls Advantages: within the depth of the arch’s structure. •Their construction is easy and time effective Each masonry unit needs to be acting in (Locally sustainable a requirement of the compression for the structure to be stable. Figure 3.29 - Mapungubwe Exterior (Fagan H, 2010) Figure 3.30 - Mapungubwe arch interior (Fagan H, 2010) sustainability report) Examples of these structures include Peter •The elements can be prefabricated and Rich’s Mapungubwe Interpretation Centre assembled on sites will little space and and the Armadillo Vault by Block Research environmental impact Group (figure 3.32). The armadillo vault •Provides a large uninterrupted floor space shows the strength of these structures as •Cost-effective it has no mortar between the single cut •They are lightweight and so require less limestone pieces. Figure 3.36 - Pinned portal frame load path Figure 3.37 - Column and beam portal framematerial •Provides a structural rhythm along its length Advantages Figure 3.31 - Masonry arch design principles •Local construction possible with training Figure 3.38 - Portal frame axonometricDisadvantages •They can be cost-effective •Poor fire resistance properties •Are lightweight when compared to •Requires multiple frames in order to similar masonry or concrete structures become more rigid •Strength This system while it is efficient cannot adapt to the •Their span is limited•Thermal Insulation 3.5.4 Conclusions filled with imagination and possibilities. This truss •Does not support large multistory buildings •Can be public space for walking on writhing change within the city. They are structures structure forms the walls of the greenhouses which are of permanence, either being completely rebuilt or All three structural systems cannot be used together the heaviest aspects of the project and so the load can remaining the same for centuries. They also require While this is the standard way to build in the project as their morphologies and strengths be transferred directly into the trusses. Below which Disadvantages large columns and the floor slab depths are thick greenhouses, these greenhouses are built don’t align with the conceptual goals of the project. laboratories and gardens will be attached. Exoskeletons •Does not support multistory buildings when used in multi-story buildings and so will not be on ground level. Further this system requires The focus for the project is on exoskeleton structures also allow for the building to be easily adapted for •Point loads are difficult to deal with large columns as the height of the buildings as these structures allow for the floor plates to hang used. future uses by replacing the floorplates with new ones. •Does not support the free façade ideals increase. This would be a wasteful use of freely without interrupting other floors. This relates This once again relates to the culture of congestion •Takes over the morphology of the steel and so not sustainable and so will not to one of the theoretical ideas posed in section one, further explored in the theoretical aspect of the building be used. where each floor has the possibility to be a virgin site, Figure 3.32 - Venice Biennale Armadillo Vault (Van Mele, 2016) document (Part 1). 64 65 Shanghai International Cruise Terminal: Shanghai Structure Chandelier SPARK Architects The exoskeleton which frames Shanghai, China the pods was the only feasible Focus: Structural Systems – Climate Control solution as two subway lines run directly underneath this The design uses multiple structural systems. The portion of the site and so focus will be on the exoskeleton and pod structure of they cannot take the load of a the jewels of Shanghai. A series of restaurants that traditional column and beam hang within an exoskeleton and form the focus of the multi-story building. The jambs design. of the exoskeleton house the circulation and services required Climate Control by the restaurants and bars which hang in-between. It also Singapore is within a tropical rainforest climate and so provides a means to reach the it does not have distinct seasons, temperatures range rooftop restaurant and bar. between 22°C and 33°C (Windfinder, 2019b). Cooling is, therefore, the primary goal of these systems. Exoskeleton structures require that the floors below hang from The development uses a river water cooling system to the truss which spans above the reduce the demand made on the HVAC systems within Figure 3.39 - Shanghai Chandelier resturant pods (Archello, 2019) floors, each floor can be totally the massive development (Figure 3.40). Cold water is unique as the load path can taken from the Huangpu River where the heat from run directly up into the truss the building is passed onto it through heat exchangers (Figure 3.41). This allows Spark Figure 3.41 - Load paths of exoskeleton where it is passed under the basement and expelled. architects to be able to suspend whole worlds in this space The double skin façade allows for the UV heat to be without one affecting the other. trapped before it enters the building while still offering The cables supporting the pods the free flow of air (Figure 2.16; 34). Large sliding run in tension and so there is doors which open onto balconies and the smaller a risk of the structure swinging windows allow for the building to vent its hot air into in winds. This is counteracted this dual façade where it rises out of the façade. by tying the pods down into the lambs of the exoskeleton The social spaces on the laboratory floors will work and using triangular supports in this way, however the laboratories need a more between each floor to keep precise system in order to function correctly. The large the pods themselves rigid. The hanging gardens create a temperate microclimate smooth skins of these pods are which buffers the building against the harsh then supported by a secondary temperatures of Bloemfontein. Thus reducing the structure which is fastened to heating and cooling load of the academic component. Figure 3.40 - River water cooling system (Yatzer, 2019) the primary pod structure. Figure 3.42 - Steel structure Figure 3.43 - Pod Structure Figure 3.44 - Facade skin 66 67 The Cocoon 3.6 Health and Safety AA Design & Make Hooke Park, UK 3.6.1 Refuse Focus: Bandage Structure – Relief Spaces A compost heap in the rooftop Genral and Recyclable Refuse Chemicals Organic Waste greenhouses reduces the volume of 1 Workstation based sorting and collection 1 Receptical collection1 Contaminated chemicals gathered after use The Cocoon is designed to represent the experience of walking through the biological waste which needs to be 2 Refuse Chute 2 Removed to compost heap2 Stored in chemical room surrounding forests, it provides the observer with a new perspective of the forest at removed from the site. Laboratory 3 Stored in skip the end. It invites the user to participate and imagine what’s next in the structure refuse is collected in bins at each 3 Collected by contractor 4 Removed by municipality weekly 4 Removed from site thanks to its intimate scale and undulating floor. This precedent directly relates to the workstation module where it is sorted 1 2 4 calabashes proposed in the design. into recyclables, general waste and chemical waste. The recyclables and general refuse is then dropped 4 Structure down the refuse duct and collected The designers initially modeled the space between the three trees and designed on ground floor. Chemical waste is the cocoons rings to fit (Figure 3.45-49). These structural rings are CNC milled out stored in the chemical room where Break Room1 1 of plywood sheets and are where the cables which support the structure connect to it is removed by contractors. The refuse is removed from its skip from 3 the cocoon. The rings were then set up as they would be in between the trees and a Figure 3.45 - Structural Rings (Frearson, 2019) Figure 3.46 - Final Bandaging (Frearson, 2019) 3the Fountain Street sidewalk once a Lift 2 cedar tree was milled into thin strips for the skin. These strips were then steamed so week, like the systems used by the 2 1 1 that they could be bent and layer by screwed to the structural rings until the structure surrounding buildings (Figure 3.50). Chemical Store was stiff enough to be hoisted into the trees. Steaming means that the structure Preperation Room is naturally prevented from rot issues and so the natural wood adds to the forest Store experience. 1 1 This structure is designed to support 2-3 people at a time and so it can afford to be ColdS-11 held to together by the thin strips of cedar. Its scale is also such that 5 anchor points Store can support the whole structure whereas the calabashes in the design are multiple stories in height and support a large amount of ground and people within them. Thus Freezer the calabashes need to be more structurally proficient than the inefficient bandaging 7 onto rings demonstrated here. The handmade nature and informality of the cocoon is, Figure 3.47 - Initial Bandaging (Frearson, 2019) Figure 3.48 - Hanging (Frearson, 2019) Dark however, a desirable aspect of this project. Room Laboratory Incubators Eye Wash 2 3 2 Figure 3.50 - Refuse Removal Laboratory levels and Ground Floor 68 Figure 3.49 - Construction Process 69 Center for Sustainable Landscapes 3.6.2 Ventilation Design Alliance Architects Pittsburgh, USA Application: Efficient mechanical ventilation systems Focus: Laboratory Requirements - Ventalation The labs require a mechanical ventilation system to keep the air inside them safe and contaminant free. This Laboratory Units system needs to be able to do six air changes per hour The Laboratory units in this project are mainly used for taxonomy in an in each laboratory. This means that the system needs to 3 educational sense and so they are large and open with little equipment. change 4500m of air per hour or 2648 CFM. This dictates Each Lab unit has a small writing desk space attached or an area for that the ducts need to have a cross-sectional area of 2 collaboration. These spaces are nearer the circulation for less disturbance 0,27m . The labs must be ventilated as efficiently as and contamination of the experiments (Figure 3.51). They do however possible yet still meet the regulations discussed. follow the health aspect of what the Phytopharmacology Labs need to Figure 3.52 - Atrium stack effect achieve. This is done by making the lab floor slab 12m wide with windows The design uses an extraction vent and a filtered inlet on both sides (Figure 3.52-53). The windows also ensure that fresh air is vent as the labs should remain in positive pressure as circulated through and expelled using slanted ceiling panels which rid the not to let in contaminants. Thus the inlet vents have space of the warmer used air and reflect the natural light into the center a greater area as more air needs to be blown through of the floorplate. The shorter northern ceiling panel is due to less light them. The design places the inlets on the floor and at entering through this elevation and so the more powerful southern light the lowest point in the ceiling (Figure 3.54; 56). The lab needs to be distributed deeper into the space. A light shelf to the south tables may not have gusts of air flowing over them and helps draw in this more powerful light without allowing natural light to so air is brought into the lab above the movement space directly disturb the lab tables. The remaining light is provided by upward and is blown against the service rooms to further diffuse facing LED’s which evenly spread their light over the space below. any strong air currents. It remains efficient and safe by not mixing the hot contaminated air with the new cool Atrium air through the ceiling design and placement of piping. The circulation spaces and the atrium space uses a stack effect to ventilate Figure 3.55 investigates ways to efficiently keep the the building naturally (Figure 3.52). The building can be completely naturally building cool using the raised access floring and natural ventilated since the laboratory units aren’t used for chemical or biological ventilation for areas such as the break rooms. experiments. This means that the air pressure isn’t strictly controlled, and the contaminated air does not need to be expelled safely. 70 Figure 3.51 - Laboratory Layouts Ground Figure 3.53 - Airflow and Light panels Figure 3.54 - Using the ceiling efficiently Figure 3.55 - Design development Figure 3.56 - Air currents on section 71 Natural ventilation system of the propigation greenhouse UFS Dept. of Biotechnology and Microbiology Labs No. m² % Renier Bron Labs 75 7 525 67% Bloemfontein Supporting rooms 404 51% Focus: Laboratory Requirements Grow Room 15 1 15 2%Small Incubator 6 7 42 5% The design articulates elements of its structure Large Incubator 35 1 35 4% as to make the building more human and Microscope Room 13 2 26 3% understandable to those who work there. This is Lab Cubicles 10 5 50 6%Culture Collection 23 1 23 3% a reaction against the typical sterile laboratory Crystalography 25 1 25 3% building facades and internal spaces while Cold Room 9 2 18 2% remaining functional and sterile inside. Freeser Room 20 1 20 3% 3.6.3 Laboratory Operation Radioactive Room 20 1 20 3%Dark Room 10 2 20 3% Laboratories are located along the perimeter of the Storage 100 1 100 13% building with circulation, offices, and supporting Deliveries 10 1 10 1% services tying the labs to the courtyards (Figure Admin 383 49% 2.33). These courtyards become a relief space General Offices 15 10 150 19% within the rigorously controlled environment Reception 15 1 15 2% within the labs. This, however, becomes a problem Waiting Room 25 1 25 3% as the office spaces are where a lot of writing Seminar Room 60 1 60 8% happens and so the staff can easily get irritated and Staff Room/Kitchen 95 1 95 12% distracted by others outside. With this interference, Ablutions 38 1 38 5% however, comes communication and connection as Total Area 787 100% other staff members join those already outside. If OtherCirculation 390 1 390 this effect could be incorporated into the circulation Figure 3.58 - Laboratory Station (Renier Brönn, 2019) Courtyards 150 2 300 rather than the office spaces it could be a very effective tool for collaboration. The laboratories are for students at the university and so apply to the postgraduate laboratory proposed by the design. Their desk areas and the equipment required is crucial to the planning of these spaces (Figure 3.58-60). Figure 3.57 - Greenhouse airflow and sun angles Figure 3.59 - Specimen Cabinet Figure 3.60 - Workspace Layout72 73 Application: Laboratory layout 3.6.44 Lighting 1 2 Natural lighting is used as much as Experement Process possible in the design. The large eastern A 1 Specimines brought down in cart façade of the departmental block B consists of floor to ceiling windows and 2 Specimines cleaned and disected composite panels. This facade is shaded 3 Book lab module + Rules by the greenhouse and pod structures C 4 Lab Station - Conduct Experements throughout the morning. Thus, the light Break Room which enters the labs is largely indirect 5 Store Cart lighting. This light is evenly distributed 6 Specimines placed in test enviroment 6 1 through the space using a high slanted 7 Record Results LiftD 5 ceiling (Figure 3.63). This idea is taken 8 Discuss results with peer/supivisor from the Center for sustainable landscapes Solid Flooring Grip-Strut Planks Solid Flooring eilings to Disperse Light 4 2 investigated on page 70.The laboratories Slanted C 9 Write up results Chemical Store Preperation Room require less natural lighting than the library spaces and so the panels in the 3 Chemicals E window system are designed to let in less Store 1 Chemicals booked out + Safety Checklist light. 1 2 Chemicals Used 4 3 Eye wash station ColdS-11 S-11 5 F 4 Store contaminated substances Store 8 5 Contractor removes chemicals 2 Freezer 7 9 G Dark Room Laboratory Incubators H 3 Eye Wash J Basement Light Well K Figure 3.62 - Sectional lighting concept Figure 3.63 - Lighting material diagram 74Figure 3.61 - Laboratory Operation 75 Privacy Screen High Opacity Panes Low Opacity Panes High Opacity Panes Clear Panes Application: Basement lightwell 1 2 3.6.5 Fire Fire Safety SANS 10400 Part T states that the design requires two paths for escape A and thus the building requires two sets of stairs to evacuate the building. 1 Fire Escape The path to which cannot be longer than 45m at any given point. B2 Fire Hose Reel + Escape Plan 5 d) Any building of a height of more than three stories shall 3 Fire Hydrant + 30m Hose Reel be provided with not less than two escape routes and 1) an C emergency route shall form part of each such escape route, and 4 120min Fire Rated Walls Privacy Screen 2) such emergency route shall include a stairway that forms part 5 Vented Stairwell of the escape route and also that part of the escape route from 1 Steel Structure for screen 4the lower end of the stairway to any escape door. (SABS, 2011) 2 Concrete fins to support screen It further states that the design needs a hose reel per Floor where the D hose will reach all areas of the floor. Planetd Gardens Figure 3.65 - Basement light well concept 4.34 Hose Reels Permanent Steel Formwork E R.C. retaining wall cast in situ 4.34.1 Hose reels for the purposes of fire fighting shall be installed in any building of two or more stories in height or in any single-story building of more than 250 m2 in floor area, at a rate of one hose reel for every 500 m2 or part thereof of floor area in any storey, provided that such hose reels shall not be S-11 required in any building classified as H4 or in any dwelling unit in F Precast Sill an occupancy classified as H3 where each unit is provided with Steel Grating independent access to ground level. Concrete Rain Water Channel 4.34.2 Any hose reel installed in such building shall comply with the requirements in SANS 543, shall be installed in accordance with SANS 10105-1 and SANS 10400-W and shall be maintained G Figure 3.66 - Privacy screen connection in accordance with the requirements in SANS 1475-2. Damp Proof Membrain 4.34.3 Any hose reel so installed shall be positioned to ensure Single Skin Brick wall that the end of the hose will reach any point in the area to be Gravel protected. 100mm Geo Pipe H 4.34.4 Any hose reel installed in any building shall bear, in a 120mm No Fines Slab prominent position on the reel disc facing the user, a certification Sand mark from an accredited certification body. J 4.34.5 Where no water supply is available, two 9 kg or equivalent 1 Figure 3.64 - Basement light well diagram fire extinguishers that comply with the requirements of 4.37 shall be provided in place of each required hose reel. K 3 Figure 3.67 - Basement light well fins 76 Figure 3.68 - Fire safety diagram 77 Further, the site requires two fire hydrants as the design is over 12m in height 3.6.7 Service Shafts and has 8 floors which means that that it requires 8 hydrants. The Labs require a services shaft and so the fire rules regarding shafts are were kept in mind when designing the shafts. 4.35.1 Hydrants in positions subject to direction by the local authority 4.40 Protection in service shafts shall be provided in 4.40.1 The walls of an internal service shaft shall have a fire resistance of not a) any building that exceeds 12 m in height, and less than the requirements for structural stability given in table 6, subject to a b) any building (excluding buildings classified as H4) of any maximum requirement of 120 min. height with a total floor area that exceeds 1 000 m2. 4.40.2 Where a vertical service shaft provided in a building is not separated from 4.35.2 Any hydrant required in terms of 4.35.1 shall be provided at a the floors it serves by a separating element, and such shaft does not contain any rate of not fewer than one per 1 000 m2 or part thereof of total floor combustible material, it shall be fire-stopped at the level of every second story area and not fewer than one per story located in the firemen`s lift above the bottom of such shaft. Such fire stop shall have a fire resistance of not lobby in such building or occupancy, or emergency stairway where no less than the requirements for structural stability given in table 6, subject to a firemen`s lift is provided, as the case might be, and shall be distributed maximum requirement of 120 min. in such a manner that the fire hose referred to in. 4.40.3 Where such a shaft is so provided and it contains any combustible 4.35.3 can reach to every part of the relevant area. material, it shall be fire stopped at the level of every story above the bottom of such shaft. 4.35.3 Any hydrant shall, where required by the local authority, be provided with an appropriate fire hose of 24 m or 30 m in length, 4.40.4 Where a vertical service shaft is used for ventilation or contains non- together with couplings and a 16 mm internal diameter nozzle, all combustible plumbing or drainage services or is a non-combustible rubbish of which shall comply with the requirements of SANS 1128-2. Such chute, no fire stop shall be required within such shaft, and the doors to such hose and nozzle shall, when positioned in the open air or in any shafts shall be self-closing fire doors in accordance with the requirements of 4.10. factory building, be suitably housed in a cupboard, provided that this 4.40.5 Where a service penetrates a separating element, such separating element requirement shall not apply to an occupancy classified as J4. (SABS, shall be firestopped with a suitable system of the same rating of the element it 2011) passes through. Such system shall have a test report prepared in accordance with the requirements of SANS 10177-2 and shall be installed in accordance with the 3.6.6 Vegitation provisions relating thereto. Mangaung Metropolitan Municipality has a specific by law which deals with (SABS, 2011) vegetation on site, this, however, should not be a problem due to the kinds of plants which are used for medicine within the Free State generally not being creepers or vine plants which would take over the structures. 3.6.8 Sprinkler Systems 7. (2) No person may allow grass, weeds, reeds, shrubs, trees or any like vegetation to become The feasibility of incorporating a fire sprinkler system into the greenhouse spaces so that it could double as the watering system for the plants was investigated. However due to overgrown on premises to such an extent that it may pose a fire hazard the watering precise control required to be efficient wen watering the plants, the system or a probable fire would be too wasteful. Thus the design uses hydrants and hose reels. hazard on such premises or to any adjacent premises or any other person’s property (Mangaung Metropolitan Municipality, 2013) Figure 3.69 - Development based on these laws 78 79 3.6.9 Library Operation 3.6.10 Accommodation List Growing Space Single unit Area Units 1132 m² Public Single unit Area Units 636 m² Propagation 772 1 772 m² Exhibition 259 1 259 m² Entrance Admin Store Climate Controlled 53 5 265 m² Workshop/Training 111 1 111 m² Lobby + Public Gardens 150 1 150 m² Auditorium 137 1 137 m² Server Room Photocopy Hanging Gardens 500 1 500 m² Storage 18 1 18 m² Headhouse 80 1 80 m² Garden Store 15 1 15 m² Social Single unit Area Units 170 m² Balcony 10 5 50 m² Academic Single unit Area Units 1130 m² Break Room 60 2 120 m² Laboratory 248 2 496 m² Preparation Room 53 2 106 m² Services Single unit Area Units 142 m² Workspaces Circulation Counter Specimine Microscope Room 9 2 18 m² Ablution 17 1 17 m² Collection Incubator Room 9 2 18 m² 8 1 8 m² Freezer Room 9 2 18 m² 16 1 16 m² Cold Room 9 2 18 m² 13 3 39 m² Dark Room 9 2 18 m² Refuse 9 1 9 m² Store 15 2 30 m² Pump Room 20 1 20 m² Chemical Store 6 2 12 m² Masters Circulation Single unit Area Units 450 m² Cubicles Library 338 1 338 m² Horizontal 167 1 167 m² Masters Workspace 58 1 58 m² Vertical 21 7 147 m² Store 12 1 12 m² 26 6 156 m² Catalogue Read/View Hanging Gardens 255 1 255 m² Recording Room 38 1 38 m² Total Area 4552 m² Administration Single unit Area Units 404 m² Periodicals Foyer/Reception 110 1 110 m² Offices 135 1 135 m² Individual Offices 11 8 88 m² Academic Record Store 19 1 19 m² Audio Subjects Reference Multi-functional 52 1 52 m² Visual Material 80 Figure 3.69 - Library operation diagram 81 4.0 Design Synthesis 4.1 Design Development 2 3 4 1 Take Out Take Out Take Out Take Out • Is it a shed or a duck? Currently • The endless freedom of a walkway • Using such a strong form and it’s a shed with some feathers cannot drive this design. It is frivo- merely placing it alongside the • The morphology of the building needs to glued on. The building should be lous and does not help dictate the world of imagination and intrigue be more interesting. Koolhaas talks about a namable and memorable, and layout of functions meaningfully. does not help engage either monolithic street experience and inside is this is neither. It is not envisioning There needs to be a middle ground where the magic happens, this magic needs ethnobotany from new lenses. between this and the previous • Suspending a ball or element I must imagine the most crazy authoritarian box. which should be on the ground to be planned. and beautiful way of creating the adds excitement, it is a new way • The ground plane needs to become a public space and work back from there of seeing the traditional botanical space living onto the spruit. adding functional elements. gardens. • There must be more involvement for the • Botanical gardens all have paths person experiencing the gardens, walkways from which you view the plants. through the gardens treetops would ignite This can be used as the basis of imagination. my imagination. 82 83 5 6 7 8 9 Take Outs Take Out • Firstly the strong geomet- • Maximizing solar gain is Take Out Take Out Take Out ric forms helped make an more important for the • This is an institution’s plinth. • It becomes difficult to place • There was something beautiful impression on the spruit. greenhouse and research This will not change the per- meaningful rooms under this type about being able to interact with This presence is essential component where condi- ception of ethnobotany itself the buildings by being able to because most herbalists tions consistent with the of public component.but rather lump it into the • I must remove the existing walk on their roof. will walk from central park rest of the Bloemfontein is university system. up the spruit to reach the important. structures to meaningfully increase • The ground plane needs to be institution. the density on the site, thus more about the gardens than • There must be a series of allowing for congestion. fitting functions into it. • I then investigated the experiences within the possibility of placing all progression through the • The original servitude and draw the functions under a project. This starts on across the site are lost by placing ramp, which allows for the the ground plane for the the buildings like this. most growing area on the public. site. • For things to grow I need- ed to maximize the solar gain. • However, this orientation does not add to the life on the spruit and discon- nects the gardens from it completely. • Adding a slope allows for people to rest in front of the building on its steps and gives it a presence along the spruit. • The walkways of the gar- den need to be integrated into the fabric of the built landscape. Just as the boomslang in Kirstenbosch integrates into the natural. 84 85 10 11 13 14 15 Take Out Take Out Take Out Take Out Take Out • This is a bit meaningless. It draws • Using such a strong • By refereeing to the natural land- • Offices should not be sepa- you across but does not relate to form and using that scapes of the Free State I am not • Using the strong rated from the research com- anything else. to draw people embedding the project as a thing void space is a ponent. I must rather look across the site is a of the man-made wilderness (The better drawing The servitude is used too directly as back to the program stacking • good idea. City). element across a street which is not that interest- I investigated in 12. Making the site. ing and it is not being reinvented. • I enjoy the interac- • Slanting the columns reduces the one site the gardens and the The path over the roof is closer to a tion between the rigor and monotony of the design. other the research compo- reinvention. gird of offices and nent has many benefits. the walkway of • The ramp is impractical if it gardens. attempts to get all the way to the roof. The roof should • The gardens shade the offices and labs just be Greenhouses. A visual connection with the labs well. (where the research is actual- • Imagining the de- ly done is better). sign as the ‘Down- town Athletics Club’ is a productive way to free my imagi- nation yet remain functional. • This diagonal element needs to relate to something meaningful. 86 87 16 Take Out • The truss structure • Combining the experience • The Ground floor must can suspend every- of the ball which I lost in be very open and thing below! This step 4 and the experience clearly public space in structure allows for of the garden path is a order to add to Bloem- the strong form and meaningful step in the cor- fontein’s green. the intriguing experi- rect direction. ence below. 88 89 17 18 19 Take Out Take Out Take Out • I enjoy the meandering path which fol- • This gives the experience of walking • Suspending a ball or element which should be on lows the general direction of the strong through a rolling valley. This is not a Free the ground adds excitement, it is a new way of void space. State experience. seeing the traditional botanical gardens. • Storing water in the gardens is a good • The ground is still meaningless. It is an • The pods cannot be made of bowstring trusses visual way to change people’s view of experience without any context. and they need to be more loosely assembled. wasting water. • The pods need to be able to be a complete struc- tural system which is then hung in place. The pods are conceptually based on calabashes and baskets which store valuable supplies for the herbalist much like this institution stores knowledge and plant species for future generations of herbalist. When the user walks through it he is exploring the plants which are in the herbalist’s repertoire. 90 91 20 21 Take Out Take Out • Having buildings with the public • Too many geom- gardens on the roof is impractical as etries on the win- they must be sunk into the ground dows. Stick to the creating multiple issues. existing triangular geometry. 92 93 4.2 Design Conclusion 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 5.0 Reflection With this said I genuinely believe that this project would be a worthwhile addition to midtown. I think it achieves various goals that I set and discovered throughout the process. Exploring what the city could be The project really adds to the daydreamy vibe of the spruit on a Saturday afternoon. It would provide a needed fully public green space where there isn’t one near. Further than that it performs I began the year intrigued by a bookn of short stories. Many showing how South Africa is along an critical but underappreciated corridor turning against what has served it so well over many years. Using plants to treat ourselves within the city’s built landscape. I believe that is something every one of our cultures did. With this came an intimate knowledge of the this small project restores the built landscape to a land. Through my five years here it feels to me that Bloemfontein has a culture of longing. level of contempt far beyond its site boundaries. Firstly to be ‘one with the land/our heritage’ while simultaneously wanting to be like the big South African cities. At the end being satisfied with neither. Investigating this in-between Change in perception has inspired me with the magic and potential which lies within the mid-town. So often The building certainly challenges the current idea projects are timid, that is not what the building needed to be. To change a perception the of what a building within the mid-town looks thing needs to be perceived, and I have loved the freedom this has brought me. like and how it interacts with the rest of society. This project has had many iterations partially explored and then traded for a new idea and Further, its walkways provide an exciting way in inspiration after a Friday night spent looking out over the site. I think each one has been which to see the plants with Bloemfontein as the better than the last. However many of these iterations could have been a viable solution, context. I think that the building represents and and so maybe I should have stuck to an earlier idea and pushed through with it. With this houses these viewpoints as separate entities yet said at each step I tried to choose the most logical and simple solution to the problem. still a part of the same morphology. When compiling the development of the design I realized that many of my ideas were Functioning Ethnobotany Research Space present in much earlier iterations; however I failed to understand the importance of them in the moment and so moved ‘onward and upward’ missing what I was looking for. I have Finally, the building functionally suits the use probably still missed many. patterns and requirements of a university postgraduate research group. I believe the line between being a functional department while maximizing the public enjoyment of the site has been carefully walked. The design can fit far more in terms of the program onto the site than its peers. 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