ASD/LRFD Manual - American Wood Council

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ASD/LRFD MANUAL FOR ENGINEERED Wood Construction 127 Figure M16.1-18 One-Hour Fire-Resistive Ceiling Assembly (WIJ-1.4) Floor a /Ceiling - 100% Design Load - 1-Hour Rating - ASTM E 119/NFPA 251 1. Floor Topping (optional, not shown): Gypsum concrete, lightweight or normal concrete topping. 2. Floor Sheathing: Minimum 23/32-inch-thick tongue-and-groove wood sheathing (Exposure 1). Installed per code requirements with minimum 8d common nails. 3. Insulation: Minimum 1-inch-thick mineral fiber insulation batts – 6 pcf (nominal) with width equal to the on-center spacing of the I-joists. Batts installed on top of furring channels and under bottom flange of I-joists with the sides butted against support clips. Abutted ends of batts centered over furring channels with batts tightly butted at all joints. 4. Structural Members: Wood I-joists spaced a maximum of 24 inches on center. Minimum I-joist flange depth: 1-1/2 inches Minimum I-joist flange area: 3.45 inches 2 Minimum I-joist web thickness: 3/8 inch Minimum I-joist depth: 9-1/4 inches Types of Adhesives Used in Tested I-Joists Flange-to-Flange Endjoint Flange-to-Web Joint Web-to-Web Endjoint Phenol-Resorcinol-Formaldehyde Phenol-Resorcinol-Formaldehyde Resorcinol-Formaldehyde 5. Furring Channels: Minimum 0.019-inch-thick galvanized steel hat-shaped furring channels, attached perpendicular to I-joists spaced 24 inches on center. At channel splices, adjacent pieces overlap a minimum of 6 inches and tied with a double strand of No. 18 gage galvanized steel wire at each end of the overlap. Channels secured to I-joists with Simpson Type CSC support clips at each intersection with the I-joists. Clips nailed to the side of I-joist bottom flange with one 1-1/2-inch-long No. 11 gage nail. A row of furring channel located on each side of wallboard end joints and spaced 2.25 inches from the end joint (4.5 inches on center). 6. Gypsum Wallboard: Minimum 1/2-inch-thick Type C gypsum wallboard. Wallboard installed with long dimension perpendicular to furring channels and fastened to each channel with minimum 1-inch-long Type S drywall screws. Fasteners spaced 12 inches on center in the field of the wallboard, 6 inches on center at the end joints, and 3/4 inch from panel edges and ends. End joints of wallboard continuous or staggered. For staggered wallboard end joints, furring channels extend a minimum of 6 inches beyond each end of the joint. 7. Finish System (not shown): Face layer joints covered with tape and coated with joint compound. Screw heads covered with joint compound. Fire Test conducted at Underwriter’s Laboratories, Inc. May 11, 1983 Third-Party Witness: Underwriter’s Laboratories, Inc. Report No: UL R1037-1 STC and IIC Sound Ratings for Listed Assembly Without Gypsum Concrete With Gypsum Concrete Cushioned Vinyl Carpet & Pad Cushioned Vinyl Carpet & Pad STC IIC STC IIC STC IIC STC IIC - - 46 68 51 47 50 73 a. This assembly may also be used in a fire-resistive roof/ceiling application, but only when constructed exactly as described. M16: FIRE DESIGN 16 American Forest & paper association
128 M16: FIRE DESIGN Figure M16.1-19 One-Hour Fire-Resistive Ceiling Assembly (WIJ-1.5) Floor a /Ceiling - 100% Design Load - 1-Hour Rating - ASTM E 119/NFPA 251 1. Floor Topping (optional, not shown): Gypsum concrete, lightweight or normal concrete topping. 2. Floor Sheathing: Minimum 23/32-inch-thick tongue-and-groove wood sheathing (Exposure 1). Installed per code requirements with minimum 8d common nails. 3. Structural Members: Wood I-joists spaced a maximum of 24 inches on center. Minimum I-joist flange depth: 1-1/2 inches Minimum I-joist flange area: 2.25 inches 2 Minimum I-joist web thickness: 3/8 inch Minimum I-joist depth: 9-1/4 inches Types of Adhesives Used in Tested I-Joists LVL Flange Adhesive Flange-to-Web Joint Web-to-Web Endjoint Phenol-Resorcinol-Formaldehyde Phenol-Resorcinol-Formaldehyde Phenol-Resorcinol-Formaldehyde 4. Gypsum Wallboard: Two layers of minimum 1/2- inch Type X gypsum wallboard attached with the long dimension perpendicular to the I-joists as follows: 4a. Wallboard Base Layer: Base layer of wallboard attached to bottom flange of I-joists using 1-5/8-inch Type S drywall screws at 12 inches on center. End joints of wallboard centered on bottom flange of the I-joist and staggered. 4b. Wallboard Face Layer: Face layer of wallboard attached to bottom flange of I-joists through base layer using 2- inch Type S drywall screws spaced 12 inches on center on intermediate joists and 8 inches on center at end joints. Edge joints of wallboard face layer offset 24 inches from those of base layer. End joints centered on bottom flange of I-joists and offset a minimum of one joist spacing from those of base layer. Additionally, face layer of wallboard attached to base layer with 1-1/2-inch Type G drywall screws spaced 8 inches on center, placed 6 inches from face layer end joints. 5. Finish System (not shown): Face layer joints covered with tape and coated with joint compound. Screw heads covered with joint compound. Fire Tests conducted at Factory Mutual Research: September 29, 1978 Third-Party Witness: Factory Mutual Research: Report No: FC-268 PFS Test Report #86-09-1: July 28, 1986 STC and IIC Sound Ratings for Listed Assembly Without Gypsum Concrete With Gypsum Concrete Cushioned Vinyl Carpet & Pad Cushioned Vinyl Carpet & Pad STC IIC STC IIC STC IIC STC IIC - - - - - - 49 b 55 b a. This assembly may also be used in a fire-resistive roof/ceiling application, but only when constructed exactly as described. b. STC and IIC values estimated by David L. Adams Associates, Inc. American Wood Council
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2005 EDITION ASD/LRFD MANUAL MANUAL
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Updates and Errata While every prec
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ii ASD/LRFD MANUAL FOR ENGINEERED W
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iv ASD/LRFD MANUAL FOR ENGINEERED W
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ASD/LRFD MANUAL FOR ENGINEERED Wood
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M1: general requirements for struct
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M2: DESIGN VALUES FOR STRUCTURAL ME
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M3: Design Provisions and Equations
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M3: Design Provisions and Equations
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10 M3: Design Provisions and Equati
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12 M4: SAWN LUMBER M4.1 General Pro
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14 M4: SAWN LUMBER M4.4 Special Des
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16 M4: SAWN LUMBER Table M4.4-3 Coe
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18 M4: SAWN LUMBER Table M4.5-1a AS
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20 M4: SAWN LUMBER Table M4.5-2b AS
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22 M4: SAWN LUMBER Table M4.5-3a AS
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24 M4: SAWN LUMBER Table M4.5-4c AS
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26 M4: SAWN LUMBER Column Capacity
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28 M5: structural glued laminated t
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34 M6: ROUND TIMBER POLES AND PILES
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36 M6: ROUND TIMBER POLES AND PILES
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38 M7: PREFABRICATED WOOD I-JOISTS
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54 M8: STRUCTURAL COMPOSITE LUMBER
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60 M9: WOOD STRUCTURAL PANELS M9.1
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62 M9: WOOD STRUCTURAL PANELS Table
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64 M9: WOOD STRUCTURAL PANELS Compr
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66 M9: WOOD STRUCTURAL PANELS M9.3
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68 M9: WOOD STRUCTURAL PANELS Table
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70 M10: MECHANICAL CONNECTIONS M10.
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72 M10: MECHANICAL CONNECTIONS M10.
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74 M10: MECHANICAL CONNECTIONS 9. W
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Page 175: American Forest & Paper Association
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