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Rafter span tables snow load3/16/2024 The ridge member shall extend the full depth of the sloped roof rafter cut. The ridge member shall be fabricated from a C-shaped member and a track section that shall have a minimum size and steel thickness equivalent to or greater than that of adjacent roof rafters and shall be installed in accordance with Figure R804.3.2.4. The clip angle shall have a steel thickness equivalent to or greater than the roof rafter thickness and shall extend the depth of the roof rafter member to the extent possible. Total load(PSF) Duration factor Live load(PSF) Roof type 55 1.15 40 snow shingle 55 1.15 30 snow tile 47 30 snow 40 20 snow 1.25 20 construction or rain, not snow load 55 1.15 40 snow. 10 screws to the ridge member in accordance with Figure R804.3.2.4 and Table R804.3.2.4. The shapes and spans shown here represent only a fraction of the millions of designs produced by Alpine engineers. Roof rafters shall be connected to a ridge member with a minimum 2-inch by 2-inch (51 mm by 51 mm) clip angle fastened with No. Roof with ceiling not attached to rafters, grinded snow load 50 Psf, dead load 20 Psf, deflexion bound L/180. 10 screws applied through the flange of the ceiling joist or by using a 54-mil (1.37 mm) clip angle with the required number of No.10 screws in each leg. Ceiling joists shall be connected to the top track of the load-bearing wall in accordance with Table R804.3, either with the required number of No. Roof rafters shall be connected to a parallel ceiling joist to form a continuous tie between exterior walls in accordance with Figure R804.3.1.1 and Table R804.3.1.1(3). Rafters GL8 Single Span Dry Use Roof weight 20kg/m2 Roof snow load 0 kPa Loads Deflection limits Batten Spacing Roof 0.2 kPa Dead Loads Span/300 or 20mm 1200mm for sheet roofs Live Load 0.25 kPa Live loads Span/250 330mm for tile roofs 1.1 kN Wind load Span/150 Snow Load 0.
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