AISC 205-11 AISC Certification Program for Steel Bridge Fabricators
Applications - Stainless India 2014 MUMBAI.pdf• AISC Stainless Steel Structural DG 27 – Issued...
Transcript of Applications - Stainless India 2014 MUMBAI.pdf• AISC Stainless Steel Structural DG 27 – Issued...
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Applications
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Roof & Wall Design
• All standard metal designs are
possible in stainless steel
• There are differences in
– Thermal expansion
– Strength
– Appropriate thickness
– Weight/square foot
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Chrysler Building
Completed 1930
First large architectural
roof application
Type 302, 2B finish
Minor Stainless replacement
LEED Gold – Existing building category
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Empire State Building, 1931, New York
World’s tallest building for 41 years, 382 m ((1,253 ft)
First spandrel and mullion panels, spire sheathing
LEED Gold – Existing building
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• Skidmore Owings & Merrill, New York
• Completed 2011
• Kuwait’s tallest building, 412 m (74
floors)
• 50 metric tons, Type 316 façade, doors,
and other exterior details
Al Hamra Firdous Tower, Kuwait
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Kingdom Tower, Saudi Arabia – Adrian Smith
• Under construction - over 1 km in height
• 2205 & glass exterior
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Pin An Finance Center, Shenzhen, China
• China’s tallest and world’s second
tallest skyscraper, 660 m
• 2016 completion
• Architect: Kohn Pederson Fox
• Type 316L, linen, 2 and 0.8 mm
• 2,500 m tons (1,700 m tons main
tower façade and 800 m tons
podium)
• LEED Gold Precertified
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• Skidmore Owings & Merrill
• Type 316 stainless steel
• Cambric finish
• World’s fifth tallest building
467B
Jin Mao Tower, Shanghai, China
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Examples of Traditional Wall Panel Joints
and Attachment to Concrete Wall
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Walt Disney Concert Hall, Los Angeles
Gehry Partners
Type 316, vibration and mirror
polished finishes
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National Polish Symphony Concert Hall
Katowice, Poland (2008)
• Frederick Swartz Architects
• Glass and stainless steel
exterior
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Shenzhen China
OCT Creative Exhibition Center
• Zhu Pai design
• Completed 2012
• Type 316, bead
blasted finish
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Peter B Lewis Building
Case Western Reserve
University, Cleveland
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Peter B Lewis Building Details
Overlapping, interlocking shingles in a predetermined design
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University of Texas,
Natural Science &
Engineering Research
Building
Type 304, electrochemically
colored stainless shingles
Design for 50+ year life to
sustainable design standards
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Singapore Residence
Electrochemically colored
stainless steel shingles
simulate aging copper
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Zaha Hadid’s Broad Museum of Art,
Lansing Michigan (2013)
• Type 316, vibration finish on corrugated panels
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Contemporary Jewish Museum
• San Francisco California USA, 2008
• Blue electrochemically colored stainless steel
• Studio Daniel Libeskind
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Illinois Institute of Technology, Chicago
Architect:
Rem Koolhaas
Corrugated
wall panels and
perforated
patio screens
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Millennium Park Concert Hall, Bridge,
Sculptures – All Type 316
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September 11 Museum Building, New York
• Situated between the sites of the two towers
– Perforated Type 316 roof and wall sunscreen cladding
– Two finishes to create texture
• Glass bead blasted and mirror polished
• Other park applications
– Type 316 park benches, water feature components,
lighting, subway station canopy
– 2205 walkway gratings
22
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Just Announced KPF – New Exterior
Petersen Automotive Museum, Los Angeles
Ribbons of vibration polished stainless steel will wrap the
existing building in light
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Council House 2, Australia, Green Star 6
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• All will have Type 316 exterior façades
• Buildings 1 - 5 (under construction)
• Building 1 stainless steel
– 250 metric tons, Type 316 façade
• “Laser” textured finish
– Structural supports for glass curtain
wall covering bottom 200 ft
– 6 ton, Type 316, 0.25” plate spire
Lobby and other applications
World Trade Center New York Buildings
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If You Build A Residence in Stainless,
It Will Sell - Even During a Recession
8 Spruce Street
2011 completion
Frank Gehry
New York
Type 316
870 ft, 265 m
Trump Tower
Chicago
SOM
2009 completion
Type 316
1389 ft, 423 m
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West 57th St, 316
7 Bryant Park, 316
facade
Gem Tower, 316
250 West 55th St, 316
Javits Ctr, 316
FDR Memorial,
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Mean Bacteria Count After Cleaning 10 Seconds - Abraded Sink Surfaces (x 104 cfu/cm2)
0
10
20
30
40
50
60
70
80
Stainless steel
Enamelled Steel
Mineral Resin
Polycarbonate
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Stainless Steel Kitchen Cabinets &
Custom Table Base
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Stainless Steel Bathroom Partitions
• Durable
• Sanitize with steam cleaning to avoid chemicals
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Corrosive Indoor Public Transit
• Corrosiveness
increased by
– Exposure to
coastal or deicing
salt
– Urine exposure
• Type 316 and
smooth finishes for
locations with salt or
urine exposure
• Fire safety also
important
Southwark Station, London Arc
hit
ectu
ral
Reco
rd m
ag
azin
e,
Marc
h 2
000
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Stainless Steel Floor Tiles
Various slip and wear resistant finishes
Installed like floor tiles
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Bangkok International Glass Curtain Wall Supports &
Built-in Furniture
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Embossed and polished
column cover Miami
International Airport
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Louis Vuitton
Woven mesh walls
held in place with
simple clips
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Auto
Showrooms
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Bending Characteristics Annealed
Stainless Steel
R = bend radius, T= metal thickness
Type Free Bend V-Block
Austenitics 180R = 1/2 T 135R = 1/2 T
Ferritics 180R = T 135R = T
Standing seam
roof detail with
very tight bends
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Standing Seam Roofs
Thickness and pan width comparison (mm) and profiles
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Reform Later Day Saints
Temple Complex
Hellmuth Obata Kassabaum
Architects
Standing seam roof, 4,500 roof
panels, Type 304, 2D finish
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Doha International Airport
Roof: Duplex AL2003
and 2205
Interior: Type 304
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Kowloon Station, Hong Kong
Batten cap design, Type 316, proprietary dull
rolled finish resembling abrasive blasting
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Shakaden Temple, Japan Completed 1975
Electrochemically colored
Black roof with gold dots and clips
No color change
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Wind Uplift Resistance
• Design
• Material strength
• Strength retention over time
– Minimal corrosion
Hurricane Katrina
New Orleans Mint
New
York
Univ
ers
ity w
ebsite
Stainless roof, private residence, Florida
Both roofs exposed to 257 km/hr gusts
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Stainless Steel Wire Ties for Tile or Slate Recommended by US Federal Emergency Management
Agency (FEMA) in coastal areas
Should be considered for any corrosive high wind area
Hurricane (typhoon) damage
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Stainless Steel’s Structural Advantages
• Corrosion resistance
– Sustainability/long term performance
– Avoid coatings and see structural detail
– Reduce maintenance
– Long term security
• Seismic performance
• Impact resistance
• High temperature strength & stiffness retention
• High strength stainless steels
– Reduce section sizes & minimize visibility
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Structural Design Standards
and Design Guides
• Material specifications define strength
• SEI/ASCE 8 Cold Formed Structural Section
Standard
• EuroCode 3 covers all structural shapes
• AISC Stainless Steel Structural DG 27
– Issued September 2013
– AISC carbon steel standard format
– Adapted from EuroCode
– Larger hot rolled structural shapes
• 3 mm (0.125 inch) or greater
– Austenitic, duplex, and precipitation
hardened stainless steels
• China is developing a structural design
standard for stainless steel
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Gateway Arch
First large stainless steel structural application Architect: Eero Saarinen Completed: 1965 192 m (630 ft.) high Exterior: Type 304, 6.3 mm (0.25 inch) plate, No. 3 polish Interior: Carbon steel, 9.5 mm (0.375 inch) plate
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Japanese Research Lab
Demonstration Building
Osaka, Japan
Photo taken after major 1995
earthquake - No damage
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Pio of Pietrelcina
Church, Italy Type 316
used in seismic design
Stainless mesh ties
stones in arches
together to allow
movement during
earthquakes
Roof supports above
arches are stainless
steel
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Stress-Strain Behavior
0 0.002 0.005 0.010 0.015
0.2
Type 2205
Strain, ε
Str
ess, σ
E
Carbon steel
E
0.2 Type 304
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Fire and Thermal Radiation Resistance
• Aluminum is least resistant – Aluminum’s strength decreases above 100ºC
– 6061-T6 tensile strength decreases 60% at 200ºC
• Carbon & weathering steel are normally fire proofed – Carbon steel limited to 370ºC under continuous loading
– Carbon steel tensile strength drops 30% at 500ºC
– Weathering steel tensile strength drops 50% >540ºC
• Stainless steel has better strength and stiffness retention – Stainless steel used for heat treating furnaces for other metals
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Stiffness Retention at Elevated Temperature
7 times the stiffness retention of carbon steel at 800 C (1472 F)
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.10
0 200 400 600 800 1000 1200 1400
Stiffness R
ete
ntion V
alu
es,
kE
,θ
Temperature, C
Stainless (typical) S350 Carbon steel
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54
Space Frame Roofing Finite
Element Analysis
• Tubular structure
(1.9” diameter/0.19” wall to
3.5 “ diameter/0.24” wall)
• Various structural knots
(intermediate, edge, support)
at lattice apexes
• Free span: 35.4 ft
• Module side: 5.9 ft
• Structure width: 11.8 ft
• Roofing load: 184 lbs/ft2
• Structure weight: 6.9 lbs/ft2
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Critical Times and Temperatures for
Space Frame Roof Failure
Steel Critical time to
failure (minutes)
Critical temperature for
failure (˚F)
Carbon Steel 10:32 892
Type 304 15:19 1117
Type 316 28:53 1465
Relative to carbon steel
• Type 304 increases the critical time to failure by 45%
• Type 316 increases the critical time to failure by 174%
Relative to Type 304
• Type 316 increases the critical time to failure by 89%
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Impact Toughness
100 50 0 -50 -150 -200
0
16.7
33.5
50.2
67
83.6
Temperature (C)
Toughness (kp)
-100
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700 KG Ball Impact
Carbon Steel Reinforced Concrete
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700 KG Ball Impact
Type 304 Stainless Reinforced
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59
7 World Trade Center, New York 2205 below the canopy, Type 316 elsewhere
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• 2205 stainless
• Convention center column covers, bollards
• Wall panels bottom 18 m of 550 m tall tower
Doha, Qatar, Convention Center
& Tower (2015), Jahn
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Private Gates,
Durban
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Where Should Stainless Concrete
Reinforcement Be Used?
• Sensitive electronic equipment
– MRIs, automated highway toll booths
– Government facilities
• Coastal or deicing salt
– Bridges, pavement, seawalls, piers, parking garages
– Salt exposure levels
• Immersion, spray, splashing
• Coastal zone with high chloride deposition rates
• Seismic design (bridge piers, slab connections)
• High impact resistance - security, avalanche walls
• Fire resistance/containment
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• UK government Building
Stainless Steel Reinforced Concrete
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Benefits of Long Life
Pier Progresso Mexico
• Reduced environmental impact
• No disruption and replacement cost
• Much lower long term operational costs
• Numerous reports including NACE 07240
Functioning pier
• Completed 1941
• Type 304 rebar
Non-functioning pier
• After 30 years
• Carbon steel rebar
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Sea Walls & Pier Concrete Corrosion
Sidney Opera House
Carbon steel reinforced
concrete retaining wall
corrosion
Replaced with Type 316
rebar
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Coastal Chloride Deposition/
Chloride Penetration Relationship
Brazil, Cuba, Yucatan Peninsula
• Chloride penetration into various
types of concrete and relationship to
chloride deposition
– 200 meters (656 ft) or less from
shore had highest levels
– Not limited to shore
• Locations with ~ 10 kg/ha (8.93
lbs/acre) of chloride deposition or
greater
– Wide range of concrete types
tested
– Only horizontal surfaces tested –
simulating road applications
– Measureable chloride penetration
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Post Tower
Bonn, Germany
Helmut Jahn
67
Exterior glass wall in double
façade systems are typically
supported by stainless
structural sections
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New Poly Plaza, Beijing Skidmore Owings & Merrill
Type 316 cable
2205 tension
bars and spiders
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DG Bank Skylights
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Apple Cube, Manhattan Glass supported by high strength 2205 duplex,
Points of light created with highly polished Type 316
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US Air Force Memorial
Pei Cobb Freed
Structural: Arup
Type 316 plate
0.75 in (19 mm)
3- step dull finish
66 - 87 meters
(218 to 284 feet)
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• Completed 2011, 168 m (550 ft)
• One of world’s longest self-anchored,
suspension bridges
• 62 tons structural 2205 plate & pipe
and 1.5 tons 17-4 PH support deck
• 2.5 tons cable stays (2205
connections, 316 cable)
Harbor Dr Bridge, San Diego
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Conclusions – Stainless Steel
• Very sustainable construction material, particularly for
– Long building service lives
– Corrosive locations
– High traffic/low maintenance
• High level of design and finish flexibility
• Contact ISSDA for free literature and technical
assistance
• Questions?
• Design detail source:
– SMACNA Architectural Sheet Metal Manual