USC ARCH 613L - 15-Steel (13 pages)

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15-Steel



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15-Steel

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Pages:
13
School:
University of Southern California
Course:
Arch 613l - Seminar: Structures Research
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Steel Structures Steel structures Prof Schierle 1 Strain Compression Tension Steel Types Light gauge steel Heavy steel Advantages Can be recycled Ductile absorbs seismic energy Lighter than concrete and masonry small seismic forces No limitation of height or floor area Hysteresis loop test stress strain curve E Energy absorbed by ductility Steel structures Challenges Requires much energy to produce Higher cost than other material Requires fire proofing Requires accurate workmanship Limited availability in some countries Prof Schierle 2 Light gauge Channel stud 1 C stud 2 I stud 3 C joist 4 I joist Steel structures Prof Schierle steel cold rolled 2 6 2 6 3 5 8 8 6 12 6 12 3 1 Light gauge steel curtain wall Attached to steel frame Steel structures Prof Schierle 4 http www dietrichmetalframing com ultrasteel menu asp Steel structures Prof Schierle 5 Steel production Steel structures Prof Schierle 6 2 19th Century Train Station 3 hinge arch Steel structures Prof Schierle 7 19th century hinge support Steel structures Prof Schierle USC steel frame building Moment joint Beam flanges welded Dog bone reduces joint stress Steel structures Prof Schierle 8 Pin joint Flanges not welded 9 3 Dog bone joints reduced size reduces joint stress Classic moment frame Dog bone moment frame Steel structures Prof Schierle 10 Coalbrookdale bridge by Darby first iron bridge 1777 79 30 m Steel structures Prof Schierle 11 Prof Schierle 12 by Gustav Eiffel Steel structures 4 Heavy steel shapes Profiles 1 W shape light 2 W shape heavy 3 S shape Standard 4 W shape wide flange 5 C shape Channel 6 T shape Cut from S shape Cut from W shape 7 Angle unequal legs Double angle 8 Angle equal legs Double angle 9 Pipe Standard Extra strong Double extra strong 10 Structural Tubing Square Rectangular Steel structures typical labels W14x22 W14x730 S12x50 W16x40 C10x30 ST6x25 WT8x20 L6x4x DL6x4x L4x4x DL3x3x P4 XP4 DXP4 ST6x6x ST8x4x Prof Schierle 13 A B C D E F Floor roof framing Steel structures Concrete slab on steel deck Steel Q deck Truss joist Support bracket Alternate prefab concrete slab Wide flange steel beam Prof Schierle 14 Steel joints Steel structures 1 Pin joint transfers only beam shear to column 2 Classic moment joint transfers shear and bending moment 3 Dog bone moment joint reduces seismic joint stress 4 Joist to beam joint with top flange cut back 5 Beam to beam joint with both flanges cut back A Column B Beam C Connector angles usually shop welded field bolted D Machine bolts usually installed in field to connect beam E Welded connection of beam flanges to column F Stiffener plates resist bending stress from beam flanges G Secondary beam joist supported by primary beam girder Prof Schierle 15 5 Steel moment frames wood structure ocean front Beam column moment joints provide lateral resistance for wide ocean view Steel structures Prof Schierle 16 Truss floors X braced towers provide lateral resistance Joist beam roof Optimal spacing Joists 10 Beams 30 Posts 30 x30 Steel structures Prof Schierle 17 Expressed steel Hillside house Architect Helmut Schulitz Braced frame Imos factory Architect Richard Rogers Engineer Anthony Hunt Stayed roof Steel structures Prof Schierle 18 6 Currigan exhibit hall Denver Architect Muchow Ream and Larson The space truss is expressed inside and along the roof edge outside Inverted truss pyramids support define the organization The space truss has four modules of 240 x680 combined length The truss is two layers deep to reduce buckling length of web bars Top and bottom grids 10 x10 are offset by half a module and joined by pyramidal web bars Truss bars consist of twin Ls joined by gussets The span depth ratio is 6 5 DL 13 psf Steel structures Prof Schierle 19 Festival Plaza Expo 70 Osaka Architect Kenzo Tange Engineer Yoshitomi Suga Six towers support the 108x292 m space truss providing about equal span both ways Equal spans assure equal deflection both spans equally efficient Steel structures Prof Schierle 20 Larkspur Ferry Terminal San Francisco Architect Jacques De Brer Engineer Kaiser Engineers Steel structures Prof Schierle 21 7 Olympic Arena Barcelona Architect Arata Isozaki Engineer Mamoru Kawaguchi The 1992 106x128 m Olympic Pentadome space truss consists of 5 units assembled at ground and lifted to final position Assembly at ground Steel structures Erection Prof Schierle 22 Tree structure Airport terminal Stuttgart Architect Von Gerkan Marg Engineer Weidleplan Features 12 trees each 80 x 80 Four pipe stems 48 branches Skylights separate units Steel structures Prof Schierle 23 Airport Terminal Stansted UK Architect Norman Foster Associates Engineer Ove Arup and Partners Steel lattice domes are supported by 36x36 m trees that integrate mechanical services Four strands secure each dome to trunks for lateral stability Steel structures Prof Schierle 24 8 Airport Terminal Hamburg Architect Von Gerkan Marg Engineer Kockjoy Schwarz Weber Prismatic truss Airport Terminal Chicago Architect Helmut Jahn Folded truss Steel structures Prof Schierle 25 Prof Schierle 26 Prof Schierle 27 IBM sports hall UK Architect Nicholas Grimshaw Prismatic truss frame Steel structures Sainsbury Center UK Architect Norman Foster Engineer Anthony Hunt Prismatic truss frame Steel structures 9 SPACE TRUSS Javits Convention Center New York Architect I M Pei Engineer Weidlinger Steel structures Prof Schierle 28 Currigan Exhibit Hall Denver Architect Muchow Ream and Larson Steel structures Prof Schierle 29 Centre Pompidou Paris Architect Piano and Rodgers Engineer Ove Arup The Centre Pompidou features six levels exhibit space 60 x 166 m Warren Trusses span the 60 m width Steel structures Prof Schierle 30 10 Steel structures Prof Schierle 31 Prof Schierle 32 CDG metro station 2 Paris Architect Engineer Paul Andrew Steel structures Braced frame Office Building Architect David Gray Engineer Dimitry Vergun Location Santa Monica N W of Colorado Blvd 7th street Steel structures Prof Schierle 33 11 Grid shell Aluminum HPR dome Walla Walla USA Architect Environmental Concern Inc Engineer builder Temcor Geodesic aluminum dome 206 diameter 42 depth Span depth ratio 4 9 Weighs less than 3 psf Prof Schierle Exhibit Hall Leipzig Architect Von Gerkan Marg Engineer IPP Ian Ritchie glass support Point supported glass with silicon joints 34 Point supported glass Steel structures Central access Steel structures Prof Schierle 35 New Exhibit Hall Leipzig 244 x 79 x 28 m high vault truss arches spaced 25 m Steel structures


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