Download - Cold-Formed Steel in Construction
-
8/7/2019 Cold-Formed Steel in Construction
1/33
COLDCOLD--FORMED STEELFORMED STEEL
-
8/7/2019 Cold-Formed Steel in Construction
2/33
Steel The MaterialSteel The Material
~~ Is recyclable, using old cars, buildings,Is recyclable, using old cars, buildings,, , ., , .
~~ Steel is the worlds most versatile material toSteel is the worlds most versatile material torecyclerecycle
~~ Yearly, steelmakers recycle about million tonsYearly, steelmakers recycle about million tonsof steel worldof steel world--widewide
~~
frame a basic residential dwellingframe a basic residential dwelling~~ Recognized Green Building MaterialRecognized Green Building Material
-
8/7/2019 Cold-Formed Steel in Construction
3/33
The EnvironmentThe Environment
~~~~ Less thanLess than 6% 6% of landfill is steelof landfill is steel - - such as staples, nailssuch as staples, nails
~~ Every ton of steel recycled conservesEvery ton of steel recycled conserves 2,500 2,500 pounds ofpounds of
iron ore,iron ore, 1400 1400 pounds of coal andpounds of coal and 120 120 pounds ofpounds of
limestone.limestone.~~ Debris from a typical woodDebris from a typical wood- -framed home accounts forframed home accounts for
o an was e, compare o on yo an was e, compare o on y rom arom asteelsteel--framed houseframed house
-
8/7/2019 Cold-Formed Steel in Construction
4/33
Advantages of SteelAdvantages of Steel
~~ Consistent Material QualityConsistent Material Quality~~ uper or e sm c er ormanceuper or e sm c er ormance
~~ NonNon--Combustible MaterialCombustible Material~~ Dimensionally Stable in anyDimensionally Stable in anyClimateClimate~~ Insect ResistanceInsect Resistance
-
8/7/2019 Cold-Formed Steel in Construction
5/33
Advantages ofAdvantages of ColdCold--Formed SteelFormed Steel
~ High Strength to Weight Ratio~ High Strength to Weight Ratio~~~ Ease of Fabrication and Mass~ Ease of Fabrication and Mass
ProductionProduction~ Speed of Erection~ Speed of Erection~ Flexibility in Design~ Flexibility in Design
Common Residential HousesCommon Residential Houses(Prescriptive Method, IRC)(Prescriptive Method, IRC)
-
8/7/2019 Cold-Formed Steel in Construction
6/33
What is Light Gauge, or moreWhat is Light Gauge, or moreaccura e y, oaccura e y, o - - orme eeorme ee
Cold Formin is a rocess where steel members aremanufactured by rolling or shaping the steel after it is cold.
This process makes the steel stronger.
-
8/7/2019 Cold-Formed Steel in Construction
7/33
yy
material produced bymaterial produced by into a shape.into a shape...
-
8/7/2019 Cold-Formed Steel in Construction
8/33
Most CommonMost Common
~~ SurfaceSurface- -Panel Material such asPanel Material such asSidin Roofin Com osite DeckSidin Roofin Com osite Deck~~ Individual Members used as Purlins,Individual Members used as Purlins,Girts, Studs and JoistsGirts, Studs and Joists
~~ Such as Perforated SectionsSuch as Perforated Sections~~ --
~~ Endless Geometric PossibilitiesEndless Geometric Possibilities
-
8/7/2019 Cold-Formed Steel in Construction
9/33
Common Uses of ColdCommon Uses of Cold--FormedFormed
NonNon--load bearing interior partition wallsload bearing interior partition wallsResidentialResidentialCommercialCommercial
--and seismic out of plane loads only)and seismic out of plane loads only)
mm r i l ilinmm r i l ilin Residential load bearing wall studsResidential load bearing wall studs
Single FamilySingle FamilyMultiMulti--FamilyFamily
Commercial load bearing wall studsCommercial load bearing wall studsCommercial trussesCommercial trussesCommercial roof and floor framingCommercial roof and floor framing
-
8/7/2019 Cold-Formed Steel in Construction
10/33
Practical Uses For Cold FormedPractical Uses For Cold Formedeeee
Sheathed Floor Systems Concrete Floor Systems
Roof Systems Exterior Wall Systems
-
8/7/2019 Cold-Formed Steel in Construction
11/33
ResidentialResidential- - Load BearingLoad Bearing Single FamilySingle Family
-
8/7/2019 Cold-Formed Steel in Construction
12/33
InstitutionalInstitutional--Load BearingLoad Bearing
--
-
8/7/2019 Cold-Formed Steel in Construction
13/33
Commercial Load BearingCommercial Load Bearing
-
8/7/2019 Cold-Formed Steel in Construction
14/33
MidMid--Rise LoadRise Load- -BearingBearingAn 8An 8--story gravitystory gravity
--
systemsystem
floor bearing wallsfloor bearing walls m l n k m l n k
and concrete floorand concrete floorsystemsystemLoads uniformlyLoads uniformlydistributeddistributed
-
8/7/2019 Cold-Formed Steel in Construction
15/33
NonNon--Load BearingLoad Bearingxter or tu a sxter or tu a s
Studs are cli ed to the floor and roof
levels with vertical slip clips to isolatethe wall system from floor level gravityloads to revent crackin the exteriorfinish system.
-
8/7/2019 Cold-Formed Steel in Construction
16/33
-
8/7/2019 Cold-Formed Steel in Construction
17/33
Generic ColdGeneric Cold--Formed SteelFormed Steel
-
8/7/2019 Cold-Formed Steel in Construction
18/33
ColdCold--Formed CFormed C- -Sha eSha e
-
8/7/2019 Cold-Formed Steel in Construction
19/33
600 S 162600 S 162 - - 54546 MemberDepth in
1/100 inches
Min. base metalthickness in mils(.054 = 54 mils)
1-5/8Flange in
1/100Stud or Joistwith Stiffener
-
8/7/2019 Cold-Formed Steel in Construction
20/33
--
-
8/7/2019 Cold-Formed Steel in Construction
21/33
Structural studsStructural studs NonNon--structural studsstructural studs
Carry Axial loadsCarry Axial loads11--5/8 flanges and 1/2 return5/8 flanges and 1/2 return
Not expected to carry loadsNot expected to carry loads11--1/4 flanges and 1/4 return1/4 flanges and 1/4 returnli s, t icalli s, t ical..
Thickness from 33Thickness from 33- -97 mil97 mil
G60 galvanized coatingG60 galvanized coating
Thickness often less than 33 milThickness often less than 33 milG40 galvanized coatingG40 galvanized coating
-
8/7/2019 Cold-Formed Steel in Construction
22/33
web
Studs madeto fit in tracks
Flange: 1-1/4
(Typical)
-
8/7/2019 Cold-Formed Steel in Construction
23/33
Floor/Ceilin Joists and Roof RaftersFloor/Ceilin Joists and Roof RaftersSame elements as studsSame elements as studs
, , ,, , ,or 12or 12 flange
web
-
8/7/2019 Cold-Formed Steel in Construction
24/33
ColdCold--RolledRolledChannelChannel
used for wall bridgingand fits through web
punch outs in studs andjoists
-
8/7/2019 Cold-Formed Steel in Construction
25/33
Furring (Hat) ChannelFurring (Hat) Channel
buildings
-
8/7/2019 Cold-Formed Steel in Construction
26/33
rr
r g ng lateral bracing
-
8/7/2019 Cold-Formed Steel in Construction
27/33
-
8/7/2019 Cold-Formed Steel in Construction
28/33
Specialty ConnectorsSpecialty Connectors specs.)specs.)
Strap Tie strap Joist hanger Beam Holdownp p g
hanger
-
8/7/2019 Cold-Formed Steel in Construction
29/33
--DESIGN SPECIFICATIONSDESIGN SPECIFICATIONS
STANDARDSSTANDARDS
-
8/7/2019 Cold-Formed Steel in Construction
30/33
AISI S100AISI S100--20072007North American pecification North American pecification
es gn pec ca on or oes gn pec ca on or o - - ormeormeSteel in ConstructionSteel in Construction
-
8/7/2019 Cold-Formed Steel in Construction
31/33
General Information:General Information:-- : enera rov s ons: enera rov s ons
AISI S201AISI S201--07: Product Standard07: Product StandardCode of Standard Practice 2006 EditionCode of Standard Practice 2006 Edition
Design Standards:Design Standards:AISI S210AISI S210--07: Floor and Roof System Design07: Floor and Roof System DesignAISI S211AISI S211- -07: Wall Stud Design07: Wall Stud DesignAISI S212AISI S212--07: Header Design07: Header Design
-- : a era es gn: a era es gnAISI S214AISI S214--07: Truss Design07: Truss Design
AISI S230AISI S230--07: Prescriptive Method for One and07: Prescriptive Method for One andTwo Family DwellingsTwo Family Dwellings
-
8/7/2019 Cold-Formed Steel in Construction
32/33
StandardStandard
Practice forPractice foroo -- ormeorme
StructuralStructuralFramingFraming
-
8/7/2019 Cold-Formed Steel in Construction
33/33
Prescri tivePrescri tive MethodMethod