Roof Load Tables

Use these two tables for roof rafters with a slope of 3 in 12 or less.

Roof load tables.

The loads are based on adjusted roof snow loads from the governing building code. Provide us with a few details about your project and we ll help you choose the best panel for your needs. Load limits on the roof of a building. Roofs are under a lot of pressure.

Allowable limiting heights spans contact clarkdietrich technical services at 888 437 3244 for any questions on tables below. 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. Use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. Interior framing use iprostud in clarkdietrich itools to quickly lookup the interior framing system you need.

Sfpa does not grade or test lumber and. Prostud limiting height charts new clarkdietrich itools structural stud lookup tool interior wall heights w structural framing interior. View allowable load tables. In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing.

For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. Arch 331 note set 13 1 s2014abn 2. Reference design values are for normal load duration under the moisture service conditions specified. Tell us about your project.

We will also give you a free quote. D dead load l live load l r live roof load w wind load s snow load e earthquake load r rainwater load or ice water load t effect of material temperature h hydraulic loads from soil f hydraulic loads from fluids. Pbr roof panel 29 gauge 0 0133 fy 60 ksi fu 61 5 ksi span type 3 0 4 0 5 0 6 0 7 0 8 0 9 0 negative wind load 93 75 52 73 33 75 23 44 17 22 13 18 10 42 live load deflection 67 01 32 53 16 66 9 64 6 07 4 07 2 86 negative wind load 61 91 37 19 24 61 17 42 12 96 10 00 7 94 live load deflection 70 40 45 18 30 41 21 75 16 28 12 62 9 40 negative wind load 73 01 44 74 29 96 21 37 15 96 12 36. 7 8 wide rib wind load table.

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. For roof live loads less than 20 pounds per square foot psf rafter spans and required e values tabulated for 20 psf shall be permitted to be adjusted in accordance with the fol lowing table.