Roof Deck Span Table

Minimum length is limited to 75 of the span length i e for 8 ft.

Roof deck span table.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Home building a deck deck beam.

And longer not more than 10 to be less than 10 ft. Load tables are calculated using section properties based on the steel design. The figures are based on quality materials. The profile contains 4 ribs and is 32 inches wide with male and female edges creating an interlocking side lap when installed.

Steel joists and steel deck load tables can facilitate the design of your next project featuring new millennium structural steel buildings systems. A redwood 4x6 beam should span no more than 6 between supporting posts. Dimensional lumber deck beam span chart the numbers in gray indicate the distance between the support posts. Type n profiles are 3 inch deep structural roof deck that provide both vertical load and diaphragm shear capacity.

Obviously the larger the beam the greater the distance it can span between posts. Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. The 3 inch deep ribs make n deck ideal for longer span conditions where b deck falls short.

Two inch decking not less than 40 to be 14 ft. Not more than 1 to be 4 to 5 ft. Support spacing 6 ft three inch decking not less than 40 to be 14 ft. Joist and rafter span tables.

Loads shown in the shaded areas are governed by the live load deflection. A 2 2x10 can span 10 feet and so on. Refer to the deck beam span table below to assist in determining the maximum span of a given beam between posts. A double 2x12 beam can span 12 feet.

View joist rafter tables. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. A dead load of 10 psf has been included. Thickness shown in the steel deck institute sdi design manual.