Assembly Usage Disclaimer

Roof Deck Constructions

See General Information for Roof Deck Constructions

Construction No. 180C

March 19, 2015

Uplift — Class 90

Fire Not Investigated

    1. Metal Roof Deck Panels* — No. 24 MSG min coated steel. Panels continuous over two or more spans. Endlaps to occur adjacent to purlin with panels overlapped 3 in. A bead of sealant may be used at panel end joints.

    A & S BUILDING SYSTEMS L P (View Classification) — "Double-Lok"

    B C STEEL BUILDINGS INC (View Classification) — "BCL-MS".

    CENTRAL STATES MFG INC (View Classification) — "Central-Seam Plus"


    CHIEF INDUSTRIES INC (View Classification) — "MSC".

    CORLE BUILDING SYSTEMS INC (View Classification) — "Corle Seam Lock"

    GOLDEN EMPIRE MFG INC, DBA GEM BUILDINGS (View Classification) — "GEM Superior-24"

    MBCI (View Classification) — "Double-Lok"

    MESCO METAL BUILDINGS (View Classification) — "Double-Lok"

    NCI BUILDING SYSTEMS L P (View Classification) — "Double-Lok" or "Triple-Lok"


    SAN ANTONIO QUALITY METALS (View Classification) — "ML-300 Trapezoidal"

    UNITED STRUCTURES OF AMERICA INC (View Classification) — "Guardian-Lok"

    WHIRLWIND STEEL BUILDINGS INC (View Classification) — "Super-Seam Plus"

    2. Roof Deck Fasteners* — Two or four piece articulating clip used with an upper tab clip to engage the metal roof deck panel rib (Item 1). Height to be 3-3/8 in. when no thermal spacer (Item 4) is used and 4-3/8 in. when a thermal spacer is used. Clips are spaced 5 ft OC max along length of panels, located at the panel ribs with three guide holes in the bottom to accommodate screw fasteners (Item 2A).

    BUILDING PRODUCTS DEVELOPMENT INC (View Classification) — "NC34501", "NC34502", "NC34701", "NC34702"

    CHIEF INDUSTRIES INC (View Classification) — "MSC Sliding Clip"

    GOLDEN EMPIRE MFG INC, DBA GEM BUILDINGS (View Classification) — "GEM Low Superior Clip", "GEM High Superior Clip"

    NCI BUILDING SYSTEMS L P (View Classification) — "Double-Lok Articulating Clip" or "Double-Lok Floating Clip" or "Double-Lok Sliding Clip" or "Triple-Lok Sliding Clip" or "Double-Lok 2" Sliding Hi-Thermal Clip" or Double-Lok 4" High and Low Sliding Clip".

    2A. Fasteners (Screws) — Screws used to attach panel clips (Item 2) to purlins (Item 7) to be 1/4 in. diameter with maximum 28 threads per inch. Length to be 3/4 in. longer than thickness of rigid insulation (Item 5) and liner panel (Item 6). Two screws per clip. Screws used at endlap are to be No. 14, Type A by 1 in. long, Hex Washer Head, self-tapping. First screw is located 3/8 in. from first slanted segment in a 4 - 5-1/2 - 5-1/2 - 4 in. pattern.
    2B. End-Lap Assembly (Optional) (Stud Plate and Cinch Strap) (Not Shown) — End-Lap Plate Assembly (Item 8). Stud Plate (16 MSG Galv.) placed on top of purlin (Item 7) with the first stud located 1-31/32 in. from either rib and then spaced in a 4, 4-1/8, 2-3/8, 4-1/8, 4 in. pattern. Upper and Lower pre-punched metal roof deck panels (Item 1), with pre-cut tape sealer, to accommodate stud locations are positioned to receive Stud Plate. Cinch Strap (0.100 in. thick aluminum) placed over studs that penetrate both lower and upper panels. Flange nut, 1/4 in. dia., hand installed on each stud. Roof Deck Fastener (Panel Clip), Item 2, installed over male leg of panel at purlin location and secured as described in Fasteners (screws) (Item 2A).
    3. Bearing Plate — No. 16 MSG min coated steel, 3-7/8 in. wide by 5 in. long. Used under panel clip (Item 2).
    4. Thermal Spacer — (Optional) (Not Shown) — Polystyrene, 1 in. max thickness, 3 in. wide, cut to fit between panel clips.
    5. Foamed Plastic (Rigid Insulation) — (Optional) — Foamed plastic, min thickness 1 in., max thickness 4.4 in. Density to be 2 pcf or see products Classified under TJBX.
    6. Liner Panel — (Optional) — No. 29 MSG min coated steel. Ribs to be 9/16 in. deep with a 3/4 in. wide crest and spaced 2.67 in. OC.
    7. Purlins — 16 MSG min coated steel, (55,000 min yield strength).

    Refer to General Information, Roof Deck Construction, (Roofing Materials and Systems Directory) for Items Not Evaluated.

    * Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such as Canada), respectively.

Last Updated on 2015-03-19
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