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Assembly Usage Disclaimer

Roof Deck Constructions


See General Information for Roof Deck Constructions

Construction No. 298A

March 18, 2016

Uplift — Class 90

Fire Not Investigated

    1. Metal Roof Deck Panels* — No. 24 MSG min thickness coated steel; 18 in. wide, 2 in. high at the female rib. Panels continuous over two or more spans without end laps. A line of sealant may be used along panel side joints. Adjacent panels to be seamed together along sides using an electric seaming tool with seams to be fully crimped. Seaming operation to include "Roof Deck Fasteners (Item 2)".
    2. Roof Deck Fasteners* (Panel Clips) — (Not Shown) — Two part assembly consisting of a painted and coated base 0.036 in. thick and a coated steel tab 0.027 in. thick. Overall height 3 in., width of both tab and base 6-1/4 in. (See Item 3 for clip spacing).

    KNUDSON MFG INC (View Classification) — "KR-24 High Floating Clip"


    2A. Roof Deck Fasteners* (Panel Clips) — One part assembly fabricated from No. 24 MSG thick coated steel. Max height 3 in., width 6-1/4 in. nominal. (See Item 3 for clip spacing).

    KNUDSON MFG INC (View Classification) — "KR-24 High Fixed Clip"


    2B. Roof Deck Fasteners* — (Panel Clips) — (Not Shown) — One part assembly, No. 22 MSG min coated steel. Height, 2-3/8 in. min, 3 in. max, width 3 in.

    BUILDING PRODUCTS DEVELOPMENT INC (View Classification) — "NCF-3300", "NCF-3300-SS" Series Clip


    3. Fasteners (Screws) — Fasteners used to attach panel clips to Liner Panels (Item 6) to be No. 14-10 truss-head, No. 3 Phillips drive, self-drilling, steel screws. Clips to be spaced 48 in. OC when using No. 14-10 screws. As an alternate fastener, No. 10-16 self-drilling, self-tapping, hex-washer-head plated steel screws may be used. Clips spaced 30 in. OC when using No. 10-16 screws. For both types, screws to penetrate liner panel min 1/2 in. with two screws used for each clip.
    4. Rigid Insulation — (Optional) — Used with Liner Panels (Item 6). Max 4 in. thick foamed plastic, min density 2 pcf.
    5. Bearing Plate — Used under Roof Deck Fasteners (Item 2) in conjunction with Rigid Insulation (Item 4). Steel flat plate with indentations along width to be one of the following:

    3-1/4 in. wide by 3 in. long, No. 18MSG (33,000 psi min yield).

    3-7/8 in. wide by 5 in. long, No. 16MSG (33,000 psi min yield).

    4-1/2 in. wide by 6 in. long, No. 24MSG (33,000 psi min yield).

    6. Liner Panels — No. 22 MSG (33,000 psi min yield strength). Depth to be 1-1/2 in. min. Max pitch to be 6 in. Fabricated to various profiles. Liner panels to be overlapped at panel sides and ends and attached to Supports (Item 7) with fastener types (welds, screws, etc.) and spacing per liner panel manufacturer's and designer's specifications for uplift loading.
    7. Supports — (Not shown) — Used to support liner panels, spaced per deck manufacturer's and designer's specifications for uplift loading.
    8. Underlayment — (Optional) — One ply, Type 30 organic felt or one layer of bituminous resin type water resistant membrane installed per manufacturer's instructions.

    Refer to General Information, Roof Deck Constructions (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 2016-03-18
TGKX.298A 298A TGKX 696901001 CONSTRUCTION Active 20160318 20160318 746738001 746738001 100028941

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