North American North American Standards for Standards for

ColdCold--Formed Steel Formed Steel FramingFraming

Steven R. Fox, PhD, P.Eng.Steven R. Fox, PhD, P.Eng.General ManagerGeneral Manager

Introduction Introduction to the to the

CSSBICSSBI

Canadian Sheet Steel Building InstituteCanadian Sheet Steel Building Institute

• Founded in 1961

• Canadian fabricators of structural sheet steel building products

• Mission is to promote the greater use of sheet steel in construction

CSSBI MembershipCSSBI MembershipFabricatorsAGWAY METALSBAILEY METAL PRODUCTSBEAUCHESNEBUTLER BUILDINGS (CANADA)CANAM GROUPDIETRICH METAL FRAMING CANADADUCHESNE & FILS LTÉE.IDEAL ROOFING CO. IMPERIAL SHEET METALMANUGYPSEMÉTAL UPROBERTSON BUILDING SYSTEMSROLL FORMED GROUPSTEELFORM BUILDING SYSTEMSSTEEL TILE CO.STEELWAY BUILDING SYSTEMSTARPON ENERGYTREBOR BUILDING PRODUCTS

VICWESTVP BUILDINGSWESTFORM METALSWESTMAN STEEL INDUSTRIES

ProducersDOFASCOSTELCO

AssociatesBAYCOATCOLOR STEELS INC.IDEAL SECURITYITW CONSTRUCTION PRODUCTS LELAND INDUSTRIES INC.SAMCO MACHINERYSFS intecSOREVCOXSTRATE ZINC CANADA

CSSBI ActivitiesCSSBI Activities• Publications

• Promotion

• Building Codes and Standards

• Technical Assistance

• Canadian Cold Formed Steel Research Group

CSSBI Product AreasCSSBI Product Areas• Steel Building Products (cladding, deck)

• Lightweight Steel Cladding

• Residential Steel Roofing

• Steel Building Systems

• Lightweight Steel Framing

Lightweight Steel FramingLightweight Steel FramingLightweight Steel Framing

Standards

S136S1-04Supplement 2004 to the North American Specification for the Design of Cold-Formed Steel Structural Members

S136-07 Pending

AISI COFS StandardsAISI COFS Standards

About AISIAbout AISIServes as the voice of the North American steel

industry in the public policy arena

Advances the case for steel in the marketplace as the preferred material of choice

Plays a lead role in the development and application of new steels and steelmaking technology

AISI Standards DevelopmentAISI Standards Development

AISI SecretariatAISI SecretariatCommittee on

Framing StandardsCommittee on

Framing Standards

Standards for Cold-Formed Steel FramingStandards for Cold-

Formed Steel Framing

General ProvisionsGeneral Provisions

Design MethodsDesign Methods

Prescriptive MethodsPrescriptive Methods

Committee on SpecificationsCommittee on Specifications

Specification for the Design of Cold-Formed

Steel Structural Members

Specification for the Design of Cold-Formed

Steel Structural Members

Design ManualDesign Manual

Test ProceduresTest Procedures

Design GuidesDesign Guides

COFS MissionCOFS MissionTo eliminate regulatory barriers and increase the

reliability and cost competitiveness of cold-formed steel framing in residential and light commercial building construction through improved design and installation standards.

Member versus System DesignMember versus System Design

AISI Framing StandardsAISI Framing StandardsGeneral Provisions:

– AISI S200-07: General Provisions– AISI S201-07: Product Standard– Code of Standard Practice, 2006 Edition

Design Standards:– AISI S210-07: Floor and Roof System Design– AISI S211-07: Wall Stud Design– AISI S212-07: Header Design– AISI S213-07: Lateral Design– AISI S214-07: Truss Design

Prescriptive Methods:– AISI S230-07: Prescriptive Method for One and Two Family

Dwellings

NBC/OBCNBC/OBCPart 4Part 4

CSACSA--S136S136--0707North American Specification for the North American Specification for the

Design of ColdDesign of Cold--Formed Steel Formed Steel Structural MembersStructural Members

•• General ProvisionsGeneral Provisions•• Product DataProduct Data

•• Wall Stud DesignWall Stud Design•• Truss DesignTruss Design•• Header DesignHeader Design

•• Lateral DesignLateral Design

NBC/OBCNBC/OBCPart 9Part 9

•• Prescriptive MethodPrescriptive Method

AISI S200: General ProvisionsAISI S200: General Provisions

General

Member Design

Installation

Connections

Miscellaneous

AISI S200: General ProvisionsAISI S200: General ProvisionsA. GENERAL

– A1 Scope– A2 Definitions– A3 Material– A4 Corrosion

Protection– A5 Products – A6 Referenced

Documents

B. MEMBER DESIGN– B1 Members– B2 Member Condition

C. INSTALLATION– C1 In-Line Framing– C2 Non-Structural Wall

Framing– C3 Installation

Tolerances

D. CONNECTIONS– D1 Screw Connections– D2 Welded

Connections– D3 Other Connections

E. MISCELLANEOUS– E1 Utilities– E2 Insulation

AISI S201: Product DataAISI S201: Product Data

General

Materials

Products

Quality Assurance

AISI S201: Product DataAISI S201: Product Data• A joint program between the CSSBI and the US

manufacturers to develop a common standard for steel framing products that will replace the current ASTM and CGSB specifications.

• Will benefit the construction industry through standardizing of products among manufacturers.

• Defines the standard steel framing sections: • Materials & Coatings• Shapes • Identification• Section Properties

ProductsProducts

Standard ThicknessesStandard ThicknessesMinimum Base Steel Thickness Design Thickness

(mils) (mm) (in) (mm)

18 0.455 0.0188 0.478 25

30 0.752 0.0312 0.792 20 Drywall

33 0.836 0.0346 0.879 White 20 Structural

43 1.087 0.0451 1.146 Yellow 18

54 1.367 0.0566 1.438 Green 16

68 1.720 0.0713 1.811 Orange 14

97 2.454 0.1017 2.583 Red 12

Colour

Steel FramingGauge No.

(for reference only)

Minimum thickness is 95% of the design thicknessMinimum thickness is 95% of the design thickness

Section DesignatorsSection DesignatorsAll products have a four-part designator that identifies the size (both depth and flange width), style, and minimum thickness. The product designators use the format illustrated by the following example:

400S162-54

where,400 = section depth, (in/100)S = designation for a stud or joist section, T = track,

U = bridging channel, F = furring channel, L = angle162 = flange width (in/100)54 = minimum base steel thickness (mm/1000)

AISI S211: Wall Stud DesignAISI S211: Wall Stud Design

Load Combinations

Sheathing Braced Design(US only)

Stud-to-Track Connection

Deflection Track Connection

AISI S212: Header DesignAISI S212: Header Design

General

Design

Installation

AISI S213: Lateral DesignAISI S213: Lateral Design

Type 1 Shear Walls

Type 2 Shear Walls

Diagonal Strap Bracing

Wall Anchorage

Diaphragms

AISI S214: Truss DesignAISI S214: Truss DesignGeneral

Design Responsibilities

Loading

Truss Design

Quality Criteria

Truss Installation And Bracing

Test Methods

AISI S230: Prescriptive MethodAISI S230: Prescriptive Method

General

Connections

Foundation

Floor Framing

Wall Framing

Roof Framing

Lightweight Steel FramingLightweight Steel FramingLightweight Steel Framing

DesignAidsand

Documents

Contact the CSSBIContact the CSSBICSSBI web site www.cssbi.ca

Phone (519) 650-1285

Fax (519) 650-8081