STRUCTURAL GLASS FACADES - USC School of Architecture

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Table 2-1 Wire rope construction (Wire Rope 2008). 6 Number of strands that make up the rope 19 Number of wires that make up each strand FC RH OL Fiber core Right hand lay Ordinary lay FSWR Flexible steel wire rope The rope shown above is designated: 6x19 FC RH OL FSWR. Each of the designations in this example has multiple alternatives, making for many possible combinations. End terminations are fittings of various types swaged to the end of the strand or wire rope. Many standard fittings are provided as options by wire rope fabricators, although these may not meet the aesthetic standards of a design. Because the exposed structures used with structural glass facades and the emphasis on craftsmanship and design detailing, end fittings are sometimes custom designed. An increasing diversity of cable termination fittings is available from the many small manufacturing firms producing glass-fixing components. 85
2.3.3.2 Rods Design innovations are often the result from the borrowing of a developed material or process from a related or unrelated industry, and applying the old technology to a new problem. Highstrength tension rods were developed Table 2-2 Hayden Planetarium, New York; Polshek Partnership architect, glass fixing by TriPyramid Structures (TriPyramid 2005). for use on racing yachts. Tim Eliason had founded Navtec, a company providing rigging systems to the yachting industry, and had played a key role in the development of rod rigging systems. He got the opportunity to transfer some of the technology when invited to participate on the Pyramid at the Louvre. Subsequently, Eliason started TriPyramid Structures to pursue opportunities for cable and rod rigging systems in the building arts. TriPyramid has been one of the leading innovators in the evolution of structural glass facades, producing some of the finest design and fabrication work the technology has produced. The end terminations for rods present a different problem than that presented by cables, which can be swaged or soldered, techniques that will not work at all on rods. Rods can be threaded at the ends to receive threaded end fittings. Alternately, threaded fittings can be placed on to the rod, and the end of the rod upset by a process called cold-heading, whereby the rod end is compressed in a hydraulic press so that it mushrooms. The end fitting is thus affixed to the rod. The design of these connections is a subtle art. There are a number of factors to balance, including the intent to conceal the threads in the installed work. The fittings must have enough tolerance build in to the design to accommodate field conditions of the installed 86
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STRUCTURAL GLASS FACADES: A UNIQUE
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Dedication To my bride, Victoria Me
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One cannot help but burden others w
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6.4 Other Considerations in Glass S
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Table 6-6 Simple truss attributes.
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List of Figures Figure 1.1 Berlin C
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Figure 2.1 Tension rod rigging term
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Figure 2.28 Diagram of low-E functi
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Figure 6.12 New Beijing Poly Plaza;
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Figure 8.7 Glass and the glass manu
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Abstract This thesis formulates a h
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The push by leading architects for
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Barriers to Implementation As with
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The primary focus of this thesis wi
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Chapter 1 - Context 1.1 Structural
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facades as used herein refers to th
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The vaulted enclosure spans six tra
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1.2.2 Architectural Use of Glass It
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the great cathedrals of the period
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1.2.4 Glass as Building Skin Struct
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1.2.5 The Advent of the Curtain Wal
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structure is exposed, and thus beco
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necessarily the case, however. Nort
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and practitioners of this style, Wa
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In the same manner, Mies van der Ro
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1.3.2 Emergence of Structural Glass
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of glass are transparency, transluc
Page 55 and 56: Opacity is the opposite of transpar
Page 57 and 58: Willis Faber & Dumas Building Ipswi
Page 59 and 60: Figure 1.18 Louvre Pyramid by night
Page 61 and 62: Channel 4 Headquarters London; Rich
Page 63 and 64: presentations on the technology usu
Page 65 and 66: was not constructed until the 1950
Page 67 and 68: 1.3.6 Practitioners The following e
Page 69 and 70: In a common development pattern, se
Page 71 and 72: from the yachting industry and used
Page 73 and 74: imitation reveals itself here; repe
Page 75 and 76: their lack of familiarity with it.
Page 77 and 78: Oil prices blowing by USD 100 per b
Page 79 and 80: Chapter 2 - Materials, Processes, a
Page 81 and 82: 2.2.1 Structures and Strategies for
Page 83 and 84: 2.2.2 Strongbacks and Glass Fins St
Page 85 and 86: Various geometries are possible, mo
Page 87 and 88: The application of trusses as part
Page 89 and 90: Figure 2.8 Truss identification: br
Page 91 and 92: A large cavity double-skin façade
Page 93 and 94: Fuller later went on to develop ten
Page 95 and 96: stabilized, or closed systems; stab
Page 97 and 98: 2.2.9.2 Cable Net The addition of h
Page 99 and 100: Kieran Kelley-Sneed, a former profe
Page 101 and 102: these materials. High performance t
Page 103 and 104: or some similar process to produce
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Page 111 and 112: Table 2-4 Raw materials used in typ
Page 113 and 114: 2.4.1.6 Laminated Glass Laminated g
Page 115 and 116: laminated panel comprised of a temp
Page 117 and 118: of the spacer, and the application
Page 119 and 120: applied by a process of vacuum (spu
Page 121 and 122: The illustration on the left shows
Page 123 and 124: 2.4.1.11 Specifying Glass Specifyin
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Page 127 and 128: later) may exhibit worsened distort
Page 129 and 130: glass above). In fact, perhaps owin
Page 131 and 132: “Float glass thickness range from
Page 133 and 134: pieces of glass with a ½” air sp
Page 135 and 136: A measure of heat gain or heat loss
Page 137 and 138: Fortunately, glass producers again
Page 139 and 140: 2.5.2 Stick Systems Most curtain wa
Page 141 and 142: The rainscreen principle has become
Page 143 and 144: with the outer glass surface. This
Page 145 and 146: 2.5.9 Structural Glazing Structural
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Page 149 and 150: Alternatively, structural glass fac
Page 151 and 152: Chapter 3 - Building Products, Proc
Page 153 and 154: New strategies and project delivery
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3.1.3 Fabrication Fabrication requi
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A design/builder may provide instal
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3.2.1.2 Weaknesses of Design/Bid/Bu
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The budget can be developed along w
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3.2.3.1 Strengths of Design/Assist
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3.3.1.2 Develop an appropriate surf
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3.3.2.1 Representative Drawings Pla
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to related websites. In the case of
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4.2.1 Wizards A common type of desi
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On selection of an exterior color f
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website acts as a resource in suppo
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It is interesting to note that tool
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easons, many interactive tutorials
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“Human Resources In-house expert
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an overall architectural project,
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contextual imagery and a general de
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4.5 The Medium 4.5.1 Print Digital
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cost ranging from 25 to 50 dollars
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Figure 4.8 PowerPoint presentation
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5.1.4 It is conceivable to facilita
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Chapter 1 defines structural glass
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technology into the mainstream cons
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Chapter 6 - Categorization and Orga
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Table 6-2 Morphological categorizat
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6.1.2 Definition of Evaluation Crit
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measure of the relative ease of des
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Material Suppliers and Subcontracto
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to work. There is great opportunity
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eing extremely efficient on a stren
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much as 20-30 percent. Thus, it is
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Figure 6.2 Generalized behavior att
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Design Considerations The strongbac
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Constructability Fabrication: The c
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opportunities for exploring facetin
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Constructability Fabrication: If sp
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square-on-offset-square derived fro
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Glass system interface: Any glass s
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Constructability Fabrication: As di
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Morphology Vertical trusses are ali
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Durability and Maintenance: The con
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Table 6-7 Mast truss attributes. 6.
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problematic, as the structures are
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deflections relative to the façade
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Stability in the cable truss is pro
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Resources and Technology Maturity:
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Installation: Installation is signi
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Design issues: The determination of
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Gymnastics Arena fabric clad tenseg
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Design Considerations Aesthetics: G
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Pre-tension requirements: The cable
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Morphology Cable-hung structures ha
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Glass system interface: The interfa
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Structural Performance Spanning cap
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Structural Efficiency (strength to
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6.2.1 Categorization Scheme Table 6
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6.2.3 Class Comparisons: Applicatio
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Optical Distortion: The heat-treati
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Size Limitation: Viracon, the large
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objective; monolithic panels of low
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equipment. Depending upon these var
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deflections exceed this requirement
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consideration, and should be heat-s
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Transparency Relative transparency
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What follows is a consideration of
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Design issues: These systems must b
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Design Considerations Aesthetics: O
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Constructability Fabrication: All f
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Material Suppliers and Subcontracto
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then treated identically to point-f
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Accommodation of movement: As with
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Geometric flexibility: One of the a
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all-bearing head that provides for
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effectively clamping the glass to t
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Constructability Fabrication: Glass
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For a more sophisticated program us
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lighting costs should also be figur
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Chapter 7 - Tools, Resources, and C
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grid anomalies, and other nonstanda
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7.1 A Simple Case The theory is tha
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7.1.3 Vertical Span / Horizontal Sp
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Figure 7.3 FacadeDesigner.com homep
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The World Wide Web is a unique medi
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Figure 7.5 StructureExplorer Web pa
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This module has not been developed
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deflections. As will be seen, the t
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F af 2 Vm/ryf F y 1- 0.
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F ab 2 Vm/ryb F y 1- 0.
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Calculate front chord stress ratio;
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analysis eliminates the formation o
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Figure 7.9 Dynamic relaxation veloc
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output of the analysis, along with
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Solving for cable force, the additi
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Figure 7.12 FacadeDesigner: select
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Figure 7.13 FacadeDesigner: glass g
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H m = H s / H n V m = V s / V n Or,
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show a vertically oriented glass gr
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FaçadeDesigner is thus linked to S
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elevations, sections and details. T
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inadvertent and unnecessary, and ea
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maximum timeframe. However, the Exp
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Figure 8.2 Introductory page requir
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Figure 8.5 Glass system types are i
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Figure 8.9 Each system type is pres
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application to the AIA/CES to becom
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8.2 Summary The background research
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Long-span façade structures Simpl
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9.1.1 Test Subjects Group A is comp
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The testing of Group A was administ
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Subjective questions 1-5, column 2,
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Table 9-4 Group B, 2nd test results
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Group A 1st Test Correct Respnses I
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y the learning program. This may re
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Group B 1st Test Correct Respnses I
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incorrect responses was 14% in the
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presentation is clearly emboldening
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Figure 9.10 Comparison of group A a
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"Don't Know" Responses by Category;
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Question 10 Tempered glass is
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Group A Incorrect Responses: Change
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This question was answered incorrec
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Perhaps the shift from I-don’t-kn
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Question 14 Glass for point-fixed s
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Please circle one number only for e
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after they were given the presentat
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The average response here fell one
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inclusion in StructureDesigner, and
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V n = number of vertical grid modul
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Table 9-5 Cable net; omparison of t
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H m = horizontal module (ft) H n =
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Table 9-6 Simple truss; comparison
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Chapter 10 - Summary and Conclusion
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pyramid structure when the distribu
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The author is not a Web designer or
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10.2.2 FaçadeDesigner; the Methodo
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Tutorials An objective of FacadeDes
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and load conditions. A testing meth
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The need is for education and resou
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information. Better organization of
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institutions such as the Massachuse
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The important issue of sustainabili
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accommodate application needs from
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10.3.6 Diffusion of Innovation in A
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Bibliography Amato, I 1997. Stuff;
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Cambridge 2000 Gallery 2005. Willis
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Glass skyscraper n.d. Model of glas
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Nardella, M 2007. Interior of Garde
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Seagram Building n.d. Photograph of
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STRUCTURAL GLASS FACADES - USC School of Architecture

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