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. U342

July 11, 2018

Bearing Wall Rating — 2 Hr.

Finish Rating — Min 59 min.

This design was evaluated using a load design method other than the Limit States Design Method (e.g., Working Stress Design Method). For jurisdictions employing the Limit States Design Method, such as Canada, a load restriction factor shall be used — See Guide BXUV or BXUV7

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

HORIZONTAL SECTION
    1. Wood Studs — Nom 2 by 4 in. Cross braced at mid-height and effectively firestopped at top and bottom of wall. Spaced a max of 16 or 24 in. OC depending on type of wallboard. See Item 2 below.
    2. Gypsum Board* — 5/8 in. thick, 4 ft wide. Applied either horizontally or vertically. Inner layers nailed to studs and bearing plates 6 in. O.C. with 6d cement coated nails, 1-7/8 in. long, 0.0915 in. shank diam and 1/4 in. diam head. Outer layer of double layered side nailed to studs and bearing plates 8 in. O.C. with 8d cement coated nails, 2-3/8 in. long, 0.113 in. shank diam and 9/32 in. diam head. Vertical joints located over studs. As an alternate, No. 6 bugle-head drywall screws, 1-7/8 or 2-3/8 in. long for the inner and outer layers, respectively, may be substituted for the cement coated nails. All joints in outer layer of double layer sides staggered with joints in inner layer.

    When Steel Framing Members* (Item 5-5D) are used, base layer attached to furring channels with 1 in. long Type S bugle-head steel screws spaced max 24 in. OC; face layer attached with 1-5/8 in. long Type S bugle-head steel screws spaced max 12 in. OC.

    When used in widths other than 48 in., gypsum board to be installed horizontally.

    NOTE: Only board types marked with + may be used in assemblies with 24 in. OC spacing of studs.

    ACADIA DRYWALL SUPPLIES LTD — Type X, 5/8 Type X, Moisture Resistant Type X, Gypsum Sheathing Type X, Mold & Mildew Resistant Type X and Mold & Mildew Resistant AR Type X, Type Blueglass Exterior Sheathing


    AMERICAN GYPSUM CO — Types AGX-1, M-Glass, AG-C+, AGX-11, LightRoc


    BEIJING NEW BUILDING MATERIALS PUBLIC LTD CO — Type DBX-1


    CERTAINTEED GYPSUM INC — Types 1, FRPC+, EGRG, GlasRoc, GlasRoc-2, Type X, Type X-1, Easi-Lite Type X-2, or Type C, Type X-2


    CGC INC — Type C+, IP-X1, IP-X2+, IPC-AR+, SCX, SHX, ULX, WRC+, WRX


    CONTINENTAL BUILDING PRODUCTS OPERATING CO, L L C — Types LGFC2A, LGFC6A, LGFC-C/A+, LGFC-WD, LGLLX


    GEORGIA-PACIFIC GYPSUM L L C — Types 5+, 6, 9, DAP, DD, DA, DAPC+, DGG, DS, C, GPFS6. LS, TG-C+, Type X, Veneer Plaster Base-Type X, Water Rated-Type X, Sheathing Type-X, Soffit-Type X, GreenGlass Type X+, Type LWX, Veneer Plaster Base-Type LWX, Water Rated-Type LWX, Sheathing Type-LWX, Soffit-Type LWX, Type DGLW, Water Rated-Type DGLW, Sheathing Type- DGLW, Soffit-Type DGLW, Type LW2X, Veneer Plaster Base - Type LW2X, Water Rated - Type LW2X, Sheathing - Type LW2X, Soffit - Type LW2X, Type DGL2W, Water Rated - Type DGL2W, Sheathing - Type DGL2W


    NATIONAL GYPSUM CO — Type eXP-C, FSK, FSK-1, FSK-C+, FSMR-C, FSW, FSW-3, FSW-5, FSW-6, FSW-8, FSW-C+, FSL or FSW-G


    NATIONAL GYPSUM CO — Riyadh, Saudi Arabia — Type FR, or WR.


    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type C+, PG-2, PG-3, PG-3W, PG-3WS, PG-4, PG-5W, PG-5WS, PG-6 , PG-9, PG-11, PG-C, PGS-WRS


    PANEL REY S A — Types GREX, PRX, PRC2, RHX, MDX, ETX or PRC+


    SIAM GYPSUM INDUSTRY (SARABURI) CO LTD — Type EX-1


    THAI GYPSUM PRODUCTS PCL — Type X or Type C


    UNITED STATES GYPSUM CO — Type C+, FRX-G, IP-X1, IP-X2+, IPC-AR+, SCX, SHX, ULIX, ULX, WRC+ or WRX


    USG BORAL DRYWALL SFZ LLC — Types C, SCX


    USG MEXICO S A DE C V — Types C+, IP-X1, IP-X2+, IPC-AR+, SCX, SHX, ULX, WRC+, WRX


    2A. Gypsum Board* — 3/4 in. thick, 4 ft wide. Applied vertically to studs (spaced max 16 in. OC) and bearing plates 6 in. OC with 8d cement coated nails, 2-3/8 in. long, 0.113 in. shank diam and 9/32 in. diam heads or 2-3/8 in. long No. 6 bugle head drywall screws. When this single layer system is used Finished Rating is reduced to 26 min.

    CGC INC — Type ULTRACODE


    UNITED STATES GYPSUM CO — Type ULTRACODE


    USG BORAL DRYWALL SFZ LLC — Type ULTRACODE


    USG MEXICO S A DE C V — Type ULTRACODE


    2B. Gypsum Board* — As an Alternate to Item 2 — 5/8 in. thick applied either horizontally or vertically. Inner layers fastened to framing with 1-1/4 in. long Type W coarse thread gypsum panel steel screws spaced a max 8 in. OC, with last srcrew 1 in. from edge of board. Outer layers fastened to framing with 1-7/8 in. long Type W coarse thread gypsum panel steel screws spaced a max 8 in. OC, with last screw 1 in. from edge of board. When used in widths other than 48 in., gypsum board to be installed horizontally. All joints in outer layer of double layer sides staggered with joints in inner layer.

    NOTE: Only board types marked with + may be used in assemblies with 24 in. OC spacing of studs.

    ACADIA DRYWALL SUPPLIES LTD — Type X, 5/8 Type X


    AMERICAN GYPSUM CO — Types AGX-1, M-Glass, AG-C+, LightRoc


    CERTAINTEED GYPSUM INC — Type C, Type X-2, Type X, Type X-1, Easi-Lite Type X-2


    CGC INC — Type C+, IP-X1, IP-X2+, IPC-AR+, SCX, SHX, ULX, WRC+, WRX.


    NATIONAL GYPSUM CO — Type FSK, Type FSK-G, Type FSW, Type FSW-3, Type FSW-5, Type FSW-G, Type FSK-C, Type FSW-C, Type FSMR-C, Type FSW-6, Type FSL


    THAI GYPSUM PRODUCTS PCL — Type C or Type X


    UNITED STATES GYPSUM CO — Type C+, FRX-G, IP-X1, IP-X2+, IPC-AR+, SCX, SHX, ULIX, ULX, WRC+ or WRX


    USG BORAL DRYWALL SFZ LLC — Type SCX


    USG MEXICO S A DE C V — Types C+, IP-X1, IP-X2+, IPC-AR+, SCX, SHX, ULX, WRC+, WRX


    2C. Gypsum Board* — (As an alternate to Items 2 through 2B) — 5/8 in. thick, 4 ft. wide, paper surfaced applied vertically and secured as described in Item 2.

    GEORGIA-PACIFIC GYPSUM L L C — Type X ComfortGuard Sound Deadening Gypsum Board


    2D. Gypsum Board* — (As an alternate to Items 2 through 2C) — Not to be used with Item 5. Installed as described in Item 2. 5/8 in. thick, 4 ft. wide, paper surfaced, applied vertically only.

    NATIONAL GYPSUM CO — SoundBreak XP Type X Gypsum Board


    2E. Gypsum Board* — (As an alternate to Items 2 through 2D) — Nominal 5/8 in. thick, 4 ft wide panels, applied vertically and secured as described in Item 2.

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type QuietRock ES


    2F. Gypsum Board* — (As an alternate to Items 2 through 2E) — Not to be used with item 5. Installed as described in Item 2. 5/8 in. thick, 4 ft. wide, paper surfaced, applied vertically only.

    CERTAINTEED GYPSUM INC — Type SilentFX


    2G. Gypsum Board* — (As an alternate to Item 2) — 5/8 in. thick, 4 ft. wide, applied vertically with vertical joints centered over studs and staggered one stud cavity on opposite sides of studs. Secured as described in Item 2.

    CERTAINTEED GYPSUM INC — 5/8" Easi-Lite Type X


    2H. Gypsum Board* — (As an alternate to 5/8 in. Type FSW in Item 2) — Nom. 5/16 in. thick gypsum panels applied vertically or horizontally. Two layers of 5/16 in. for every single layer of 5/8 in. gypsum board described in Item 2. Horizontal joints on the same side need not be staggered. Inner layer of each double 5/16 in. layer attached with fasteners, as described in item 2, spaced 24 in. OC. Outer layer of each double 5/16 in. layer attached per Item 2.

    NATIONAL GYPSUM CO — Type FSW


    2I. Wall and Partition Facings and Accessories* — (As an alternate to Item 2) — Nominal 5/8 in. thick, 4 ft wide panels, applied vertically and secured as described in Item 2.

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type QuietRock 527


    2J. Gypsum Board* — (As an alternate to Item 2) — 5/8 in. thick, two layers applied either horizontally or vertically. Inner layer attached to studs with 1-1/4 in. long Type W steel screws spaced 10 in. OC with the last two screws 4 and 1 in. from the edges of the board. Outer layer attached to studs over inner layer with 1-7/8 in. long Type W steel screws spaced 10 in. OC offset 5 in. from base layer with the last two screws 4 and 1 in. from the edges of the board. Vertical joints located over studs. Vertical and horizontal joints between inner and outer layers staggered. Outer layer joints covered with joint tape and compound, screwheads covered with joint compound. When used in widths other than 48 in., gypsum panels are to be installed horizontally.

    CONTINENTAL BUILDING PRODUCTS OPERATING CO, L L C — Type LGFC6A, Type LGFC2A, Type LGFC-C/A, Type LGFC-WD, Type LGLLX


    3. Joints and Nailheads — Gypsum board joints of outer layer covered with paper tape and joint compound. Nail heads of outer layer covered with joint compound. As an alternate, nom 3/32 in. thick gypsum veneer plaster may be applied to the entire surface of Classified veneer baseboard with joints reinforced with paper tape.
    4. Batts and Blankets* — (Optional) — 3-1/2 in. max thickness glass or mineral fiber batt insulation.

      See Batts and Blankets (BZJZ) category of list of Classified companies.

    4A. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 4) — Spray applied cellulose material. The fiber is applied with water to completely fill the enclosed cavity in accordance with the application instructions supplied with the product with a nominal dry density of 2.7 lb/ft3. Alternate Application Method: The fiber is applied without water or adhesive at a nominal dry density of 3.5 lb/ft3, in accordance with the application instructions supplied with the product.

    U S GREENFIBER L L C — INS735 & INS745 for use with wet or dry application. INS510LD, INS515LD, INS541LD, INS735, INS745, INS765LD, and INS770LD are to be used for dry application only.


    4B. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 4) and Item 4A — Spray applied cellulose insulation material. The fiber is applied with water to interior surfaces in accordance with the application instructions supplied with the product. Applied to completely fill the enclosed cavity. Minimum dry density of 4.3 pounds per cubic ft.

    NU-WOOL CO INC — Cellulose Insulation


    4C. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 4) — Spray applied cellulose fiber. The fiber is applied with water to completely fill the enclosed cavity in accordance with the application instructions supplied with the product. The minimum dry density shall be 4.30 lbs/ft3.

    INTERNATIONAL CELLULOSE CORP — Celbar-RL


    5. Steel Framing Members* — (Optional, Not Shown) — Furring channels and Steel Framing Members as described below:
      a. Furring Channels — Formed of No. 25 MSG galv steel. 2-9/16 in. or 2-23/32 in. wide by 7/8 in. deep, spaced 24 in. OC perpendicular to studs. Channels secured to studs as described in Item b. Ends of adjoining channels are overlapped 6 in. and tied together with double strand of No. 18 SWG galv steel wire near each end of overlap. As an alternate, ends of adjoining channels may be overlapped 6 in. and secured together with two self-tapping #6 framing screws, min. 7/16 in. long at the midpoint of the overlap, with one screw on each flange of the channel. Wallboard attached to furring channels as described in Item 2.
      b. Steel Framing Members* — Used to attach furring channels (Item a) to studs (Item 1) . Clips spaced 48 in. OC., and secured to studs with No. 8 x 2-1/2 in. coarse drywall screw through the center grommet. Furring channels are friction fitted into clips. RSIC-1 clip for use with 2-9/16 in. wide furring channels. RSIC-1 (2.75) clip for use with 2-23/32 in. wide furring channels.

      PAC INTERNATIONAL L L C — Types RSIC-1, RSIC-1 (2.75).


    5A. Steel Framing Members* — (Optional, Not Shown) — Furring channels and Steel Framing Members as described below:
      a. Furring Channels — Formed of No. 25 MSG galv steel. 2-3/8 in. wide by 7/8 in. deep, spaced 24 in. OC perpendicular to studs. Channels secured to studs as described in Item b. Ends of adjoining channels are overlapped 6 in. and tied together with double strand of No. 18 SWG galv steel wire near each end of overlap. As an alternate, ends of adjoining channels may be overlapped 6 in. and secured together with two self-tapping #6 framing screws, min. 7/16 in. long at the midpoint of the overlap, with one screw on each flange of the channel. Gypsum board attached to furring channels as described in Item 2.
      b. Steel Framing Members* — Used to attach furring channels (Item a) to studs. Clips spaced 48 in. OC. Genie clips secured to studs with No. 8 x 1-1/2 in. coarse drywall screw through the center hole. Furring channels are friction fitted into clips.

      PLITEQ INC — Type Genie Clip


    5B. Steel Framing Members* — (Optional, Not Shown) — Furring channels and Steel Framing Members as described below:
      a. Furring Channels — Formed of No. 25 MSG galv steel. Spaced 24 in. OC perpendicular to studs. Channels secured to studs as described in Item b. Ends of adjoining channels overlapped 6 in. and tied together with double strand of No. 18 AWG galvanized steel wire.Gypsum board attached to furring channels as described in Item 2.
      b. Steel Framing Members* — Used to attach furring channels (Item 5Ba) to studs. Clips spaced 48 in. OC., and secured to studs with 2 in. coarse drywall screw with 1 in. diam washer through the center hole. Furring channels are friction fitted into clips.

      STUDCO BUILDING SYSTEMS — RESILMOUNT Sound Isolation Clips - Type A237R


    5C. Steel Framing Members* — (Optional, Not Shown) — Furring channels and Steel Framing Members as described below:
      a. Furring Channels — Formed of No. 25 MSG galv steel. Spaced 24 in. OC perpendicular to studs. Channels secured to studs as described in Item 5Cb. Ends of adjoining channels overlapped 6 in. and tied together with double strand of No. 18 AWG galvanized steel wire. Gypsum board attached to furring channels as described in Item 2.
      b. Steel Framing Members* — Used to attach furring channels (Item 5Ca) to studs. Clips spaced 48 in. OC., and secured to studs with No. 8 x 2-1/2 in. coarse drywall screw through the center hole. Furring channels are friction fitted into clips.

      REGUPOL AMERICA — Type SonusClip


    5D. Steel Framing Members* — (Optional, Not Shown) — Resilient channels and Steel Framing Members as described below:
      a. Resilient Channels — Formed of No. 25 MSG galv steel, spaced 24 in. OC, and perpendicular to studs. Channels secured to studs as described in Item b. Ends of adjoining channels overlapped 6 in. and secured in place with two No. 8 15 x 1/2 in. Philips Modified Truss screws spaced 2-1/2 in. from the center of the overlap. Gypsum board attached to resilient channels as described in Item 2.
      b. Steel Framing Members* — Used to attach resilient channels (Item 5Da) to studs. Clips spaced 48 in. OC., and secured to studs with No. 8 x 2-1/2 in. coarse drywall screw through the center hole. Resilient channels are secured to clips with one No. 10 x 1/2 in. pan-head self-drilling screw.

      KEENE BUILDING PRODUCTS CO INC — Type RC+ Assurance Clip


    6. Wall and Partition Facings and Accessories* — (Optional, Not Shown) — Nominal 1/2 in. thick, 4 ft wide panels, for optional use as an additional layer on one or both sides of the assembly. Panels attached in accordance with manufacturer's recommendations. When the QR-500 or QR-510 panel is installed between the wood framing and the UL Classified gypsum board, the required UL Classified gypsum board layer(s) is/are to be installed as indicated as to fastener type and spacing, except that the required fastener length shall be increased by a minimum of 1/2 in. Not evaluated or intended as a substitute for the required layer(s) of UL Classified Gypsum Board.

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type QuietRock QR-500 and QR-510


    * 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 2018-07-11
BXUV.U342 U342 BXUV 923830002 DESIGN ACTIVE 20180711 20180306 100562937 283066001 736720001 100219806 846414005 294450001 299592001 923830002 923830002 100046076 544217001 798029001 100584219 730408054 P1802957 287840003 846414005 730408054 P1802957 287840003 100562937 283066001 100219806 846414005 923830002 100584219 730408054 P1802957 287840003 299592001 923830002 100046076 100219806 100219806 923830002 100046076 294450001 184866001 882208001 979414001 114328003 100238497 100099348 P1642614 100057537 100046076

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