Floor Dead Load: 15 psf JOIST … Dead Loads, cont’d Typical Weights of Horizontal Systems •Roof Construction –Asphalt Shingles ~ 15 psf (pounds per sq. CONTACT (210) 650-2276; Pole Barns » Roof Trusses » Roof Material Weight Roof Material Dead Load Table. Dead Load Weight of Roof Trusses Top Chord Bottom Chord Webs Weight per Lineal Foot (plf) 2x4 2x4 2x4 4.3 2x4 2x8 2x4 5.6 2x6 2x4 2x4 4.8 2x6 2x6 2x4 5.5 Section 3.2. Load Charts Load Charts With A Built-In Safety Factor We believe that engineered wood products such as structural insulated panels (SIPs) cannot be understood unless full-scale, destructive testing is performed to obtain absolute values. The shapes and spans shown here represent only a fraction of the millions of designs produced by Alpine engineers. Toggle navigation. Extrapolating data for structural design calculations is risky at best. span, configuration and load conditions. (TABLE 2308.8(2)) RAFTER SLOPE 2X6 2X8 2X10 Dead Load (up to 10 psf) Live Load: 40 psf ALLOWABLE SPANS FOR DF#1 FLOOR GIRDERS (DF-LARCH) 2X8 2X10 2X12 2X6 4:12 7'-3" HEADER SPANS FOR DF EXTERIOR BEARING WALLS BASED ON 28' BUILDING WIDTH (TABLE 2308.9.5) 4'-8" 5'-11" 3:12 20 16 5:12 16 4x6 4x8 4x10 4x12 Max. ft.) Dead load of roof of wood shingle construction = 10 lbs. A table of roof material weights including sheathing, insulation, and other decking materials. foot) •Ceiling Construction –Gypsum (Sheetrock) finish ~ 10psf •Floor Construction –Carpet or Vinyl ~ 10 psf –Hardwood Floor ~ 12 psf –Ceramic Tile ~ 15 psf Reference design values are for normal load duration under the moisture service conditions specified. View Allowable Load Tables. per sq. (Usually 30 lbs. Disclaimer: These easy-to-use tables were compiled by the Southern Forest Products Association (SFPA) as a service to design/build professionals and other Southern Pine users. Roof Rafter Span Use this table to determine the maximum lengths of roof rafters based on species and grade of lumber, spacing, dimensions, load, and slope. Unlike the trussed roof, live load and dead load of the rafters and ceiling joists must be accounted for as separate systems. Since it is possible to use the attic for storage, the live load of the attic floor is set at 20 psf according to code. Use this table to determine the maximum lengths of floor joists based on species of lumber, joist spacing, and joist size. per sq. Where roofs utilize a green roof system and are used for human occupancy, the minimum live load shall be as specified in Table 1607.1 or Section 1607.11.2.2, whichever is greater. Joist span Bridging Girder load width Half joist span Live load on roof = local requirements for wind and snow. ft. The weight of the landscaping materials shall be considered as dead load and shall be computed on the basis of saturation of the soil. 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