FIRE-RESISTANCE DESIGN

Assembly Usage Disclaimer

BXUV - Fire Resistance Ratings - ANSI/UL 263 Certified for United States

BXUV7 - Fire Resistance Ratings - CAN/ULC-S101 Certified for Canada

See General Information for Fire-resistance Ratings - ANSI/UL 263 Certified for United States
Design Criteria and Allowable Variances

See General Information for Fire Resistance Ratings - CAN/ULC-S101 Certified for Canada
Design Criteria and Allowable Variances

Design No. D985

September 07, 2018

Restrained Assembly Ratings — 3/4, 1, 1-1/2, 2 or 3 Hr (See Items 1, 3A, 6 and 10)

Unrestrained Assembly Rating — 0 Hr (See Items 3, 3A, 4, 4A and 10)

Unrestrained Beam Ratings — 1, 1-1/2, 2, 3 and 4 Hr (See Items 4, 4A and 10)

Loading Determined by Allowable Stress Design Method or Load and Resistance Factor Design Method published by the American Institute of Steel Construction, or in accordance with the relevant Limit State Design provisions of Part 4 of the National Building Code of Canada.

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

    1. Supports — W8 x 28 or alternate (per Section IV.6 in the front of the Fire Resistance Directory) steel beam or min 10K1 steel joists when joist substitution applied.
    1A. Normal Weight or Lightweight Concrete — Normal weight concrete carbonate or siliceous aggregate, 3500 psi compressive strength, vibrated. Lightweight concrete, expanded shale, or slate aggregate by rotary-kiln method, or expanded clay aggregate by rotary-kiln or sintered-grate method, 3000 psi compressive strength, vibrated, 4 to 7 percent entrained air.
    Restrained
    Assembly Rating Hr
    Concrete
    (Type)
    Concrete Unit
    Weight pcf
    Concrete
    Thkns In
    1 Normal Weight 147-153 3-1/2
    1-1/2 Normal Weight 147-153 4
    2 Normal Weight 147-153 4-1/2
    3 Normal Weight 147-153 5-1/4
    3/4 or 1 Lightweight 107-113 2-1/2
    1 Lightweight 107-120 2-5/8
    1-1/2 Lightweight 107-113 3
    2 Lightweight 107-113 3-1/4
    2 Lightweight 107-116 3-1/4*
    2 Lightweight 114-120 3-1/2
    3 Lightweight 107-113 4-3/16
    3 Lightweight 114-120 4-7/16

    * For use with 2 or 3 in. steel floor and form units only.

    2. Welded Wire Fabric — 6 x 6, 10 x 10 SWG.
    2A. Negative Reinforcement — (Not Shown) — Optional — For 3/4, 1, 1-1/2 and 2 Hr Restrained Assembly Rating Only. Used in lieu of Item 2 and with Item 2B. For floor spans with concrete cast continuous over the supporting beams. Deformed bars designed to resist the support moments of the concrete slab in accordance with the latest ACI Building Code Specifications.
    2B. Fiber Reinforcement — (Not Shown) — For 3/4, 1, 1-1/2 and 2 Hr Restrained Assembly Rating Only. Required with Item 2A. Engineered synthetic fibers added to concrete mix to control shrinkage cracks in concrete. Fibers added to concrete mix at rate of 5 lbs of fiber for each cubic yard of concrete.

    GCP APPLIED TECHNOLOGIES INC — Type Strux 90/40


    3. Steel Floor or Form Units* — Composite or Non-Composite, fluted, 1-1/2, 2, or 3 in. deep galv units welded to beam or joist. Min gauge is 22 MSG.

    ASC STEEL DECK, DIV OF ASC PROFILES L L C — 32 in. wide Types NH-32, NHN-32, NHF-32; 36 in. wide Types BH-36, BHN-36, BHN-35-1/4, BHF-36, 2WH-36, 2WHS-36, 3WxH-36, 3WH-36, 3W-36, DG3W-36. All units may be galvanized or Prime Shield. May be vented designated with a "V" suffix to the product name.


    CANAM STEEL CORP — 36 in. wide Types P-3623, P-3606, P-3615 and 24 in wide Type P-2432 composite


    CANAM STEEL CORP — 24 in. wide, Types 1-1/2, 2 or 3 in. LOK-Floor; 36 in. wide, Types 2 or 3 in. LOK-Floor; 24 in. wide, Type N-LOK; 24, 30 or 36 in. wide, Type 1-1/2 in. B-LOK


    NEW MILLENNIUM BUILDING SYSTEMS L L C — 24 in. wide Types CFD-2, CFD-3; 24, 30 or 36 in. wide Type CFD-1.5; 24 or 36 in. wide Types Mac-Lok 2, Mac-Lok 3; 24 in. wide, Types B2C, B2FC, NC, NFC; 30 in. wide Type B3C; 24 in. wide Type Versa-Dek


    DECK WEST INC — 36 in. wide Types B-DW, 2-DW or 3-DW. Side joints of 2-DW and 3-DW may be fastened together with min 1 in. long No. 12 x 14 self-drilling, self-tapping steel screw 36 in. OC


    DESIGN ASSISTANCE CONSTRUCTION SYSTEMS INC — 36 in. wide Type DACS1.5CD, or 24 in. wide Types DACS2.0CD or DACS3.0CD


    EPIC METALS CORP — 24 in. wide Types EC150, EC300, EC366, EC150, EC300 inverted; 30 in. wide Types ECB150, ECBR150; 36 in. wide Types EC266


    MARLYN STEEL DECKS INC — Types 1.5 CF, 2.0 CF or 3.0 CF


    NEW MILLENNIUM BUILDING SYSTEMS L L C — Types 1.5CD, 1.5CDI, 1.5CDR, 2.0CD or 3.0CD. Units may be phos/painted or galvanized


    VALLEY JOIST — 24 or 36 in. wide Types WVC 1-1/2 or WVC 2


    VERCO DECKING INC - A NUCOR CO — FORMLOK™ deck types PLB, B, BR, PLN3, N3, PLN, N, PLW2, W2, PLW3, W3. Units are min 24 in. wide and may be galvanized, phos./ptd., or mill finish. Units may be cellular or acoustical cellular, with the suffix "CD" or "CD-AC" added to the product name, respectively. All non-cellular deck may be vented or non-vented. 12 in. wide PLW2, W2, PLW3 or W3 units may be blended with 24 or 36 in. wide PLW2, W2, PLW3 or W3 units, respectively; or Type N3.


    VULCRAFT, DIV OF NUCOR CORP — 24, 30 or 36 in. wide, Type 1.5 VL, 1.5 VLI, 1.5PLVLI; 24 or 36 in. wide. Types 2VLI, 2.0PLVLI, 3VLI, 3.0PLVLI; 36 in. wide Types 1.5 SB, 1.5 SBR; 24 or 36 in wide Types 2.0 SB, 3.0 SB, 36 in. wide Type High Strength 1.5 SBI, 36 in. wide Type High Strength 1.5 SBN


    The Unrestrained Assembly Rating is equal to the Unrestrained Beam Rating for a max of 3 Hr and is limited to the following floor units and spans:

    (a) 1-1/2, 2 and 3 in. deep, 24 in. wide, 22 MSG or thicker fluted with clear spans not more than 7 ft, 8 in.

    (b) 1-1/2, 2 and 3 in. deep, 24 in. wide, 20 MSG or thicker fluted with clear spans not more than 8 ft, 8 in.

    (c) 1-1/2 and 2 in. deep, 24 in. wide, 16 MSG or thicker fluted with clear spans not more than 9 ft, 11 in.

    (d) 3 in. deep, 36 in. wide, 18 MSG or thicker fluted and 24 in. wide with clear spans not more than 13 ft, 2 in.

    For assemblies utilizing 3-1/4 in. lightweight concrete topping with a max Restrained Assembly Rating of 2 Hr, the Unrestrained Assembly Rating is equal to the Unrestrained Beam Rating and is limited to the following floor units and spans:

    (a) 1-1/2, 2, and 3 in. deep, 24 or 36 in. wide, 22 MSG fluted with clear spans not more than 9 ft, 6 in.

    (b) 2 and 3 in. deep, 24 or 36 in. wide 20 MSG fluted with clear spans not more than 10 ft, 0 in.

    (c) 3 in. deep, 24 in. wide, 20 MSG flutedwith clear spans not more than 13 ft, 2 in.

    3A. Steel Floor and Form Units* — (not Shown) For 1 Hr, 1-1/2 Hr and 2 Hr ratings and as an alternate to Item 3. The top flange of the steel beam and or joist shall be protected with Spray-Applied Fire Protection Material Item 4, and the the thickness of the protection shall be to the final thickness required for the rating for that member. Composite, galv steel units. Min gauge 20 MSG. Side joints of adjacent units fully overlapping, fastened together by using 1-1/4 in. long self-drilling, self-tapping steel screws driven through Shear-Bond Clips at 13-3/4 in. OC. Steel end closures flashings made of min gauge 16 MSG galv steel, fixed to the steel work before decking is placed. Lightweight concrete loading shall be governed by normal weight concrete load tables. "Consult the below-listed deck manufacturer for comprehensive load tables and design parameters associated with this assembly."
    Min Normal or Lightweight Concrete Topping over the top of the steel deck = 2-1/2 in. Min Normal Weight Concrete Topping over the top of the steel deck = 3-9/16 in. Min Normal Weight Concrete Topping over the top of the steel deck = 4-1/2 in. Min Lightweight Concrete Topping over the top of the steel deck = 3-1/4 in.
    Restrained Assembly Rating, h 1 1-1/2 2 2
    Unrestrained Assembly Rating, h (Steel Deck Span 32 ft, 9-5/8 in.) 1 1-1/2 2 2
    Unrestrained Assembly Rating, h (Steel Deck Span > 32 ft, 9-5/8 in.) 0 0 0 0
    Rib-Steel ReinforcementRefer to UL Design D930. Steel reinforcement designed in accordance with ACI 318 latest specifications. Minimum Cover below the steel reinforcement shall be 1-19/32 in. for 1 and 1-1/2 Hr. Rating and 4-3/4 in. for 2 Hr. rating.
    Welded Wire Fabric — 6 X 6 - Min wire thickness W2.9 X W2.9. placed in the concrete topping.

    BAILEY METAL PRODUCTS LTD — Type COMSLAB™ 210 and COMSLAB™ 225, Steel End Closure Flashing


    4. Spray-Applied Fire Resistive Materials — Applied by mixing with water and spraying in one or more coats to a final thickness as shown in the tables below, to steel beam surfaces which must be clean and free of dirt, loose scale and oil. Min avg and min ind density of 15/14 pcf, respectively for Types MK-6/HY, MK-6/HY Extended Set, MK-6/HB, MK-6s, MK-6 GF, MK-6 GF Extended Set, MK-10 HB, MK-10 HB Extended Set, MK-1000/HB, MK-1000/HB Extended Set, RG. Min avg and min ind density of 22/19, respectively for Types Z-106, Z-106/G and Z-106/HY. Min avg and min ind density of 40/36 pcf respectively for Types AV-650, Z-146, Z-146PC and Z-146T cementitious mixture. Min avg and min ind density of 50/45 pcf respectively for Types AV800, Z-156, Z-156T and Z-156PC. For method of density determination, refer to Design Information Section.
    Restrained
    Assembly
    Rating Hr
    Unrestrained
    Assembly
    Rating Hr
    Unrestrained
    Beam
    Rating Hr
    W8x28 Beam
    (see Note #1)
    Fluted Floor Units
    w/Light Weight Concrete
    Fluted Floor Units
    w/Normal Weight Concrete
    1 1 1 3/8 5/16
          5/8#  
    1-1/2 1 1 3/8 5/16
          5/8#  
    1-1/2 1-1/2 1-1/2 5/8 9/16
          15/16#  
    2 1 1 3/8 5/16
          5/8#  
    2 2 2 15/16 13/16
          1-1/4#  
    3 1-1/2 1-1/2 5/8 9/16
    3 3 3 1-9/16 1-5/16
    3 3 4 2-1/8 1-7/8

    Note #1: Joists from the N series designs may be substituted for the listed beam. When joists are substituted, the restrained rating of the joist must be equal to or greater that the restrained rating of the assembly. Additional joist substitution requirements are contained in the front of the Fire Resistance Directory.

    # This thickness applies when optional Item 10 is used over 3-1/4 in. light weight concrete topping.

    Restrained
    Assembly
    Rating Hr
    Unrestrained
    Assembly
    Rating Hr
    Unrestrained
    Beam
    Rating Hr
    Joist Thickness
    Joist Spacing More than 4 ft OC Joist Spacing 4 ft OC or less
    1 1 1 7/8 3/4
    1-1/2 1 1 7/8 3/4
    1-1/2 1-1/2 1-1/2 1-5/16 1-1/8
    2 1 1 7/8 3/4
    2 2 2 1-3/4 1-1/2
    3 1-1/2 1-1/2 1-7/16 1-7/16
    3 3 3 2-9/16 2-5/16

    The thicknesses of Spray-Applied Fire Resistive Materials shown in the table below are applicable when normal weight concrete is used and the thickness applied to the beams' lower flange edges is reduced to one-half that shown in the table.

    Restrained
    Assembly
    Rating Hr
    Unrestrained
    Assembly
    Rating Hr
    Unrestrained
    Beam
    Rating Hr
    W8x28
    Beam and NW Concrete
    1 1 1 3/8
    1-1/2 1 1 3/8
    1-1/2 1-1/2 1-1/2 5/8
    2 1 1 3/8
    2 2 2 7/8
    3 1-1/2 1-1/2 5/8
    3 3 3 1-7/16
    3 3 4 1-15/16

    + Thickness applied to beams' lower flange edges shall be a minimum of 1/4 in.

    ARABIAN VERMICULITE INDUSTRIES — Types MK-6/HY, MK-6/HY Extended Set, MK-6/HB, MK-6s, MK-6 GF, MK-6 GF Extended Set, MK-10 HB, MK-10 HB Extended Set, MK-1000/HB, MK-1000/HB Extended Set, Z-106, Z-106/G, Z-106HY, Z146, AV-650, AV-800


    GCP KOREA INC — Types MK-6/HY, MK-6/HY Extended Set, MK-6/HB, MK-6s, MK-6 GF, MK-6 GF Extended Set, MK-10 HB, MK-10 HB Extended Set, MK-1000/HB, MK-1000/HB Extended Set, Z-106/G, Z-106, Z-106HY, Z-146


    GCP APPLIED TECHNOLOGIES INC — Types MK-6/HY, MK-6/HY Extended Set, MK-6/HB, MK-6s, MK-6 GF, MK-6 GF Extended Set, MK-10 HB, MK-10 HB Extended Set, MK-1000/HB, MK-1000/HB Extended Set, RG, Z-106/G, Z-106, Z106HY, Z-146, Z-146T, Z-146PC, Z-156, Z-156T, Z-156PC


    4A. Sprayed Fiber* — (Optional, Not Shown) Sprayed Fiber, Classified for Surface Burning Characteristics (BNST), having a maximum applied density of 3.5 pcf applied over Spray-Applied Fire Resistive Material (Item 4) on both Steel Floor and Form Units (Item 3 and 3A) and over Spray-Applied Fire Resistive Material (Item 4) on Supports (Item 1). Sprayed Fiber may be applied to the underside of Steel Floor and Form Units (Item 3 and 3A) at an unlimited thickness. Sprayed Fiber may be applied over Spray-Applied Fire Resistive Material (Item 4) on Supports (Item 1) according to the following tables:

    Allowable Sprayed Fiber Thickness over SFRM applied to Beams (Item 1)

    Installed
    SFRM
    Thickness
    (in.) on
    Beam
    SFRM Density (lb/ft3)
    15 22 40 50
    Sprayed Fiber Thickness (in.)
    5/16 8 8 8 8
    3/8 8 8 8 8
    9/16 8 8 8 8
    5/8 8 8 8 8
    13/16 8 8 8 8
    7/8 8 8 8 8
    15/16 8 8 8 8
    1-1/4 8 8 8 8
    1-5/16 7-3/4 8 8 8
    1-7/16 7-1/4 8 8 8
    1-9/16 6-11/16 8 8 8
    1-7/8 5-3/8 7-7/8 5 6-1/4
    1-15/16 5-1/16 7-7/16 4-5/16 5-3/8
    2-1/8 4-5/16 6-5/16 2-1/8 2-11/16

    Allowable Sprayed Fiber Thickness over SFRM applied to Joists (Item 1)

    Installed
    SFRM
    Thickness
    (in.) on
    Joist
    SFRM Density (lb/ft3)
    15 22 40 50
    Sprayed Fiber Thickness (in.)
    5/16 8 8 8 8
    3/8 8 8 8 8
    9/16 8 8 8 8
    5/8 8 8 8 8
    13/16 8 8 8 8
    7/8 8 8 8 8
    15/16 8 8 8 8
    1-1/4 8 8 8 8
    1-5/16 7-3/4 8 8 8

    INTERNATIONAL CELLULOSE CORP — Type K13, URE-K, or SonaSpray FC


    5. Shear-Connector-Studs-Optional — Studs 3/4 in. diam by 3 in. long, for 1-1/2 in. deep form units to 5-1/4 in. long for 3 in. deep form units, headed type or equivalent per AISC specifications. Welded to the top flange of the beam through the steel form units.
    6. Electrical Inserts — (Not Shown) — Classified as "Outlet Boxes and Fittings Classified for Fire Resistance".

    WIREMOLD CO — After set Inserts. Single-service after set inserts installed per accompanying installation instructions in 2-1/2 in. diam hole core-drilled through min 3-1/4 in. thick concrete topping to top of cell of any min 3 in. deep cellular steel floor unit specified under Item 3. Spacing shall be no more than one insert in each 10 sq ft of floor area in each span with a min center to center spacing of 16 in. If the high potential and low potential raceways of the cellular steel floor unit are separated by a valley filled with concrete, the center to center spacing of the high potential and low potential single-service after set inserts may be reduced to a min of 7-1/2 in. Restrained Assembly Rating is 2 hr or less with internally protected Type 436 after set insert with Types M4-, M6- or M8- Series single-service activation fitting


    WIREMOLD CO — Internally protected Type 436 after set insert with Type M4-, M6- or M8- Series single-service activation fitting


    7. Roof Covering Materials* — (Optional, not shown) — Consisting of materials compatible with insulations described herein which provide Class A, B or C coverings. See Roofing Materials and Systems Directory - Roof Covering Materials (TEVT).
    8. Insulating Concrete — (Not Shown) — Optional. Various types of insulating concrete prepared and applied in the thickness indicated:
      A. Vermiculite Concrete — (Not Shown) — Optional.
        1. Blend 6 to 8 cu ft of Vermiculite Aggregate* to 94 lb Portland Cement and air entraining agent. Min thickness of 2 in. as measured to the top surface of the structural concrete or foamed plastic (Item 9) when it is used.

        SIPLAST INC

        VERMICULITE PRODUCTS INC

        2. Blend 3.5 cu ft. of Type NVC Concrete Aggregate* or Type NVS Vermiculite Aggregate* to 94 lb Portland Cement. Slurry coat, 1/8 in. thickness beneath foamed plastic (Item 9) when used, 1 in. min topping thickness.

        SIPLAST INC

        VERMICULITE PRODUCTS INC

        Vermiculite concrete may be covered with Roof Covering Materials (Item 7).

      B. Cellular Concrete-Roof Topping Mixture* — Concentrate mixed with water and Portland Cement per manufacturers specifications. Min. thickness of 2-in. as measured to the top surface of the structural concrete or foamed plastic (Item 9) when used. 28-day min compressive strength of 190 psi as determined with ASTM C495-66.

      AERIX INDUSTRIES — Cast dry density of 37 (+ or -) 3.0 pcf


      CELCORE INC — Type Celcore with cast dry density of 31 (+ or - 3.0) pcf or Type Celcore MF with cast dry density of 29 (+ or - 3.0) pcf


      ELASTIZELL CORP OF AMERICA — Type II. Mix #1 of cast dry density 39 (+ or -) 3.0 pcf, Mix #2 of cast dry density 40 (+ or -) 3.0 pcf, Mix #3 of cast dry density 47 (+ or -) 3.0 pcf


      SIPLAST INC — Mix No. 1 or 2. Cast dry density of 32+3 (Mix No. 1) or 36+3 (mix No. 2) pcf


      C. Perlite Concrete — Mix consists of 6.2 cu ft Perlite Aggregate* to 94 lbs of Portland cement and 1-1/2 pt air entraining agent. Compressive strength 80 psi min.

      See Perlite Aggregate (CFFX) category for names of Classified companies.

      D. Cellular Concrete-Roof Topping Mixture* — Foam Concentrate mixed with water, Portland Cement and UL Classified Vermiculite Aggregate per manufacturer's application instructions. Cast dry density of 33 (+ or -) 3.0 pcf and 28-day compressive strength of min 250 psi as determined in accordance with ASTM C495-86.

      AERIX INDUSTRIES — Mix No. 3


      SIPLAST INC — Mix No. 3


      E. Floor Topping Mixture* — (Optional, not shown) — Approx 4.5 gal of water to 41 lbs of NVS Premix floor topping mixture. Slurry coat 1/8 in. thickness beneath foamed plastic (Item 9) when used, 1 in. min topping thickness.

      SIPLAST INC

      Floor Topping Mixture may be covered with Built-Up or Single Membrane Roof Covering.

    9. Foamed Plastic* — (Optional, not shown) — For use only with vermiculate or cellular concretes or Floor Topping mixture (Item 8E) -Rigid polystyrene foamed plastic insulation having slots and/or holes sandwiched between vermiculite concrete slurry which is applied to the normal or lightweight concrete surface and concrete topping.

    SIPLAST INC

    VERMICULITE PRODUCTS INC

    10. Roof Insulation-Mineral and Fiber Boards* or Foamed Plastic* — (Optional, not shown) — Mineral and fiber boards or polyisocyanurate roof insulation applied over concrete floor with no restriction on board thickness. When mineral and fiber boards or polyisocyanurate roof insulation are used the unrestrained beam rating shall be increased by a min of 1/2 hr. See Mineral and Fiber Boards (CERZ) or Foamed Plastic (CCVW) category for names of Manufacturers.

    * 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 2018-09-07
BXUV.D985 D985 BXUV 772402040 DESIGN Active 20180907 20180907 772402040 754471002 730823001 730823001 100589912 358860001 100518273 348627001 161442001 132101001 734446001 738115001 301426002 909238002 544031001 946757001 772402040 979414001 762652009 762652009 704971007 738328001 704971007 738328001 100611719 499889001 979511001 704971007 100611719 704971007 704971007 704971007 738328001

Design/System/Construction/Assembly Usage Disclaimer

  • Authorities Having Jurisdiction should be consulted in all cases as to the particular requirements covering the installation and use of UL Certified products, equipment, system, devices, and materials.
  • Authorities Having Jurisdiction should be consulted before construction.
  • Fire resistance assemblies and products are developed by the design submitter and have been investigated by UL for compliance with applicable requirements. The published information cannot always address every construction nuance encountered in the field.
  • When field issues arise, it is recommended the first contact for assistance be the technical service staff provided by the product manufacturer noted for the design. Users of fire resistance assemblies are advised to consult the general Guide Information for each product category and each group of assemblies. The Guide Information includes specifics concerning alternate materials and alternate methods of construction.
  • Only products which bear UL's Mark are considered Certified.

The appearance of a company's name or product in this database does not in itself assure that products so identified have been manufactured under UL's Follow-Up Service. Only those products bearing the UL Mark should be considered to be Certified and covered under UL's Follow-Up Service. Always look for the Mark on the product.

UL permits the reproduction of the material contained in the Online Certification Directory subject to the following conditions: 1. The Guide Information, Assemblies, Constructions, Designs, Systems, and/or Certifications (files) must be presented in their entirety and in a non-misleading manner, without any manipulation of the data (or drawings). 2. The statement "Reprinted from the Online Certifications Directory with permission from UL" must appear adjacent to the extracted material. In addition, the reprinted material must include a copyright notice in the following format: "© 2019 UL LLC".