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Cold-Formed Metal Framing

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Cold-Formed Metal Framing

MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME

    A/E Name Issue Description

    A/E Project No. Month, 00, 0000

SECTION 05 40 00 COLD-FORMED METAL FRAMING

    PART 1 - GENERAL

    1.01 RELATED DOCUMENTS

    A. Drawings and general provisions of the Contract, including General and Supplementary

    Conditions and Division 01 Specification Sections, apply to this Section.

    B. Specifications throughout all Divisions of the Project Manual are directly applicable to this Section,

    and this Section is directly applicable to them.

    1.02 REFERENCE STANDARDS

    A. The latest published edition of a reference shall be applicable to this Project unless identified

    by a specific edition date.

    B. All reference amendments adopted prior to the effective date of this Contract shall be

    applicable to this Project.

    C. All materials, installation and workmanship shall comply with all applicable requirements and

    standards.

    1.03 QUALITY ASSURANCE

    A. Component Design: Calculate structural properties of studs and joists in accordance with

    American Iron and Steel Institute (AISI) "Specification for Design of Cold Formed Steel

    Structural Members."

    B. Welding: Use qualified welders and comply with American Welding Society (AWS) D1.3,

    "Structural Welding Code Sheet Steel."

    C. Fire Rated Assemblies: Where framing units are components of assemblies indicated for a

    fire resistance rating, including those required for compliance with governing regulations,

    provide units that have been approved by governing authorities that have jurisdiction. 1.04 SUBMITTALS

    A. Product Data:

    1. Product data and installation instructions for each item of cold formed metal framing and

    accessories

    B. Record Documents:

    1. Shop drawings for special components and installations not fully dimensioned or detailed

    in manufacturer's product data.

    a. Include placing drawings for framing members showing size and gage designations,

    number, type, location, and spacing. Indicate supplemental strapping, bracing,

    splices, bridging, accessories, and details required for proper installation.

The University of Texas COLD-FORMED METAL FRAMING

    MD Anderson Cancer Center 05 40 00

    MS010107 1 OF 7

MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME

    A/E Name Issue Description

    A/E Project No. Month, 00, 0000

1.05 PERFORMANCE REQUIREMENTS

    A. AISI "Specification": Calculate structural characteristics of cold-formed metal framing

    according to AISI's "Specification for the Design of Cold-Formed Steel Structural Members"

    and the following:

    B. AISI "Specification": Calculate structural characteristics of cold-formed metal framing

    according to AISI's "Load and Resistance Factor Design Specification for Cold-Formed Steel

    Structural Members" and the following:

    1. Center for Cold-Formed Steel Structures (CCFSS) Technical Bulletin, Vol. 2, No. 1,

    February 1993 "AISI Specification Provisions for Screw Connections."

    C. Structural Performance: Engineer, fabricate and erect cold-formed metal framing with the

    following minimum physical and structural properties:

    1. Physical and Structural Properties: As indicated.

    D. Structural Performance: Engineer, fabricate, and erect cold-formed metal framing to

    withstand design loads within limits and under conditions required.

    1. Design framing systems to withstand design loads without deflections greater than the

    following:

    a. Exterior Load-Bearing Walls: Lateral deflection of 1/360 of the wall height, unless

    otherwise indicated.

    b. Interior Load-Bearing Walls: Lateral deflection of 1/360 of the wall height.

    c. Exterior Nonload-Bearing Curtainwall: Lateral deflection of 1/240 of the wall height.

    d. Exterior Nonload-Bearing Curtainwall: Lateral deflection of 1/360 of the wall height.

    e. Exterior Nonload-Bearing Curtainwall: Lateral deflection of 1/600 of the wall height.

    f. Exterior Nonload-Bearing Curtainwall: Lateral deflection of 1/720 of the wall height.

    g. Floor Joists: Vertical deflection of 1/240 of the span.

    h. Floor Joists: Vertical deflection of 1/360 of the span.

    i. Roof Trusses: Vertical deflection of 1/240 of the span.

    j. Roof Trusses: Vertical deflection of 1/360 of the span.

    2. Design framing systems to provide for movement of framing members without damage

    or overstressing, sheathing failure, connection failure, undue strain on fasteners and

    anchors, or other detrimental effects with subject to a maximum ambient temperature

    change (range) of 120 degrees F (67 degrees C).

    3. Design framing system to accommodate deflection of primary building structure and

    construction tolerances, and to maintain clearances at openings.

The University of Texas COLD-FORMED METAL FRAMING

    MD Anderson Cancer Center 05 40 00

    MS010107 2 OF 7

MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME

    A/E Name Issue Description

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    E. Design exterior nonload-bearing curtainwall framing to accommodate lateral deflection

    without regard to contribution of sheathing materials.

    F. Engineering Responsibility: Engage a fabricator who assumes undivided responsibility for

    engineering cold formed metal framing by employing a qualified professional engineer to

    prepare design calculations, shop drawings, and other structural data. PART 2 - PRODUCTS

    2.01 GENERAL

    A. All materials shall meet or exceed all applicable referenced standards, federal, state and

    local requirements, and conform to codes and ordinances of authorities having jurisdiction. 2.02 ACCEPTABLE MANUFACTURERS

    A. Subject to compliance with requirements, manufacturers offering products that may be

    incorporated in the work include:

    1. Alabama Metal Industries Corp.

    2. American Studco, Inc.

    3. Dale/Incor, Industries of Florida

    4. Dale Industries, Inc.

    5. Dietrich Industries, Inc.

    6. Incor Plant Dale Industries

    7. Marino/Ware; Div. of Ware Industries, Inc.

    8. Super Stud Building Products, Inc.

    9. Unimast, Inc.

    10. United Construction Supply

    11. United States Steel

    2.03 METAL FRAMING

    A. System Components: Manufacturers' standard load bearing steel studs and joists of type,

    size, shape, and gage as indicated. With each type of metal framing required, provide

    manufacturer's standard, steel runners (tracks), blocking, lintels, clip angles, shoes,

    reinforcements, fasteners, and accessories for applications indicated, as needed to provide a

    complete metal framing system.

    B. Materials and Finishes:

    1. For 16 gage and heavier units, fabricate metal framing components of structural quality

    steel sheet with a minimum yield point of 40,000 psi; ASTM A 446, A 570, or A 611.

The University of Texas COLD-FORMED METAL FRAMING

    MD Anderson Cancer Center 05 40 00

    MS010107 3 OF 7

MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME

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    2. For 18 gage and lighter units, fabricate metal framing components of commercial quality

    steel sheet with a minimum yield point of 33,000 psi; ASTM A 446, A 570, or A 611.

    3. Provide galvanized finish to metal framing components complying with ASTM A 525 for

    minimum G 60 coating.

    a. Where metal framing provides back-up support for brick veneer, provide G90 (Z275)

    coating.

    4. Prime-Painted Steel Sheet: ASTM A 570 (ASTM A 570M) or ASTM A 611, cleaned,

    pretreated, and primed with manufacturer's baked-on, lead- and chromate-free, rust-

    inhibitive prime conforming to the performance requirements of FS TT-P-664.

    a. Finish of installation accessories to match that of main framing components, unless

    otherwise indicated.

    5. Fasteners: Provide nuts, bolts, washers, screws, and other fasteners with corrosion

    resistant plated finish.

    6. Electrodes for Welding: Comply with AWS Code and as recommended by stud

    manufacturer.

    7. Galvanizing Repair: Where galvanized surfaces are damaged, prepare surfaces and

    repair in accordance with procedures specified in ASTM A 780.

    2.04 FRAMING ACCESSORIES

    A. Fabricate steel-framing accessories of the same material and finish used for framing

    members, with minimum yield strength of 33,000 psi (230 MPa).

    B. Provide accessories of manufacturer's standard thickness and configuration, unless

    otherwise indicated, including:

    1. Supplementary framing

    2. Bracing, bridging, and solid blocking

    3. Web stiffeners

    4. Gusset plates

    5. Deflection track and vertical slide clips

    6. Reinforcement plates

    2.05 ANCHORS, CLIPS, AND FASTENERS

    A. Steel Shapes and Clips: ASTM A 36 (ASTM A 36M), zinc coated by the hot-dip process

    according to ASTM A 123.

    B. Cast-in-Place Anchor Bolts and Studs: ASTM A 307, Grade A (ASTM F 568, Property Class

    4.6); carbon-steel hex-head bolts and studs; carbon-steel nuts; and flat, unhardened-steel

    washers. Zinc coated by hot-dip process according to ASTM A 153.

The University of Texas COLD-FORMED METAL FRAMING

    MD Anderson Cancer Center 05 40 00

    MS010107 4 OF 7

MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME

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    A/E Project No. Month, 00, 0000

    C. Welding Electrodes: Comply with AWS standards.

    2.06 MISCELLANEOUS MATERIALS

    A. Galvanizing Repair Paint: SSPC-Paint 20 or DOD-P-21035, with dry film containing a

    minimum of 94 percent zinc dust by weight.

    B. Cement Grout: Portland cement, ASTM C 150, Type I; and clean, natural sand, ASTM C

    404. Mix at ratio of 1 part cement to 2-1/2 parts sand, by volume, with minimum water

    required for placement and hydration.

    C. Nonmetallic, Nonshrink Grout: Premixed, nonmetallic, noncorrosive, nonstaining grout

    containing selected silica sands, portland cement, shrinkage-compensating agents,

    plasticizing and water-reducing agents, complying with ASTM C 1107, with fluid consistency

    and a 30-minute working time.

    2.07 FABRICATION

    A. Framing components may be prefabricated into assemblies before erection. Fabricate

    panels plumb, square, true to line, and braced against racking with joints welded. Perform

    lifting of prefabricated units to prevent damage or distortion.

    B. Fabricate units in jig templates to hold members in proper alignment and position and to

    assure consistent component placement.

    C. Fastenings: Attach similar components by welding. Attach dissimilar components by

    welding, bolting, or screw fasteners, as standard with manufacturer.

    D. Wire tying of framing components is not permitted.

    E. Fabrication Tolerances: Fabricate units to a maximum allowable tolerance variation from

    plumb, level, and true to line of 1/8 inch in 10 feet.

    1. Spacing: Space individual framing members no more than plus or minus 1/8 inch (3 mm)

    from plan location. Cumulative error shall not exceed minimum fastening requirements

    of sheathing or other finishing materials.

    2. Squareness: Fabricate each cold-formed metal framing assembly to a maximum out-of-

    square tolerance of 1/8 inch (3 mm).

    PART 3 - EXECUTION

    3.01 PREPARATION

    A. Pre-Installation Conference:

    1. Prior to start of installation of metal framing systems, meet at Project Site with installers

    of other work including door and window frames and mechanical and electrical work.

    2. Review areas of potential interference and conflicts, and coordinate layout and support

    provisions for interfacing work.

The University of Texas COLD-FORMED METAL FRAMING

    MD Anderson Cancer Center 05 40 00

    MS010107 5 OF 7

    MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME

    A/E Name Issue Description

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    3.02 INSTALLATION

    A. Installation shall meet or exceed all applicable federal, state and local requirements,

    referenced standards and conform to codes and ordinances of authorities having jurisdiction. B. All installation shall be in accordance with manufacturer’s published recommendations.

    C. Install metal framing systems in accordance with manufacturer's printed or written

    instructions and recommendations.

    D. Runner Tracks: Install continuous tracks sized to match studs. Align tracks accurately to

    layout at base and tops of studs. Secure tracks as recommended by stud manufacturer for

    type of construction involved, except do not exceed 24 inches on center spacing for nail or

    powder driven fasteners or 16 inches on center for other types of attachment. Provide

    fasteners at corners and ends of tracks.

    E. Installation of Wall Studs: Secure studs to top and bottom runner tracks by either welding or

    screw fastening at both inside and outside flanges.

    F. Set studs plumb, except as needed for diagonal bracing or required for nonplumb walls or

    warped surfaces and similar requirements.

    G. Where stud system abuts structural columns or walls, including masonry walls, anchor ends

    of stiffeners to supporting structure.

    H. Install supplementary framing, blocking, and bracing in metal framing system wherever walls

    or partitions are indicated to support fixtures, equipment, services, casework, heavy trim and

    furnishings, and similar work requiring attachment to the wall or partition. Where type of

    supplementary support is not otherwise indicated, comply with stud manufacturer's

    recommendations and industry standards in each case, considering weight or loading

    resulting from item supported.

    I. Frame wall openings larger than two feet square with double stud at each jamb of frame

    except where more than two are either shown or indicated in manufacturer's instructions.

    Install runner tracks and jack studs above and below wall openings. Anchor tracks to jamb

    studs with stud shoes or by welding, and space jack studs same as full height studs of wall.

    Secure stud system wall opening frame in manner indicated.

    J. Frame both sides of expansion and control joints with separate studs; do not bridge the joint

    with components of stud system.

    K. Install horizontal stiffeners in stud system, spaced (vertical distance) at not more than 54

    inches on center. Weld at each intersection.

    L. Erection Tolerances: Bolt or weld wall panels (at both horizontal and vertical junctures) to

    produce flush, even, true to line joints.

    1. Maximum variation in plane and true position between prefabricated assemblies should

    not exceed 1/16 inch.

    M. Installation of Joists: Install level, straight, and plumb, complete with bracing and reinforcing

    as indicated on drawings. Provide not less than 1-1/2 inch end bearing.

    The University of Texas COLD-FORMED METAL FRAMING

    MD Anderson Cancer Center 05 40 00

    MS010107 6 OF 7

MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME

    A/E Name Issue Description

    A/E Project No. Month, 00, 0000

    N. Reinforce ends with end clips, steel hangers, steel angle clips, steel stud section, or as

    otherwise recommended by joist manufacturer.

    O. Where required, reinforce joists at interior supports with single short length of joist section

    located directly over interior support, snap on shoe, 30 percent side piece lapped

    reinforcement, or other method recommended by joist manufacturer.

    P. Secure joists to interior support systems to prevent lateral movement of bottom flange.

    Q. Field Painting: Touch up damaged shop applied protective coatings. Use compatible primer

    for prime coated surfaces; use galvanizing repair system for galvanized surfaces.

    END OF SECTION 05 40 00

The University of Texas COLD-FORMED METAL FRAMING

    MD Anderson Cancer Center 05 40 00

    MS010107 7 OF 7

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