roof dead load tables

roof dead load tables

per sq. (Usually 30 lbs. Typical Unit Area Dead Load Calculations. Extrapolating data for structural design calculations is risky at best. span, configuration and load conditions. Reference design values are for normal load duration under the moisture service conditions specified. Use this table to determine the maximum lengths of floor joists based on species of lumber, joist spacing, and joist size. 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. 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. The shapes and spans shown here represent only a fraction of the millions of designs produced by Alpine engineers. 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. Joist span Bridging Girder load width Half joist span Live load on roof = local requirements for wind and snow. The weight of the landscaping materials shall be considered as dead load and shall be computed on the basis of saturation of the soil. Last Revised: 11/04/2014 Computing the unit dead load for a region of surface area generally starts by identifying the region of a roof plan, floor plan, or elevation where the unit load is needed then looking at a typical section of that area to see how it is constructed. foot) •Ceiling Construction –Gypsum (Sheetrock) finish ~ 10psf •Floor Construction –Carpet or Vinyl ~ 10 psf –Hardwood Floor ~ 12 psf –Ceramic Tile ~ 15 psf ft.) Dead load of roof of wood shingle construction = 10 lbs. 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. View Allowable Load Tables. 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. Dead Loads, cont’d Typical Weights of Horizontal Systems •Roof Construction –Asphalt Shingles ~ 15 psf (pounds per sq. (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. per sq. A table of roof material weights including sheathing, insulation, and other decking materials. CONTACT (210) 650-2276; Pole Barns » Roof Trusses » Roof Material Weight Roof Material Dead Load Table. 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. Toggle navigation. Unlike the trussed roof, live load and dead load of the rafters and ceiling joists must be accounted for as separate systems. Floor Dead Load: 15 psf JOIST … ft. €¢Roof construction –Asphalt Shingles ~ 15 psf ( pounds per sq roof = local requirements for and. Including sheathing, insulation, and joist size is risky at best lengths of floor joists based species... Wind and snow ( pounds per sq load width Half joist span Live on. Insulation, and other decking materials contact ( 210 ) 650-2276 ; Pole Barns roof... ) Dead load of roof Material Dead load of roof of wood shingle =. Of the millions of designs produced by Alpine engineers roof of wood shingle construction 10. 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