Composite Decking Span Tables

Your selection of decking material will determine the maximum spacing of your joists. Our new interactive deck tools provide the fastest way to generate your load tables and diaphragm designs for roof composite and form deck. Some wood species are stronger than others so refer to the decking span table below before going to the deck joist span table.

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Build your dream deck with trex the world s best high performance composite decking brand.

Composite decking span tables.

A 2 2x10 can span 10 feet and so on. Check out our newest deck tools. Complete your yard with our framing railing lighting. A dovetail deck system its strength and exposed aesthetic enable it to service a vast array of architectural and structural design possibilities in multi story construction.

That is unless you re installing your deck at a 45 degree angle in this case 12 inches oc is recommended by most composite decking brands. Deck type design thickness in weight psf section properties v a lbs ft f y ksi i p in 4 ft s p in3 ft n in ft n in3 ft 1 5vl22 0 0295 1 78 0 143 0 169 0 177 0 179 2626 50 1 5vl20 0 0358 2 14 0 186 0 224 0 222 0 231 3171 50. A double 2x12 beam can span 12 feet. Redicor modular steel form system.

32 wide n deck. Water drainage and airflow are critical to deck board spacing because mold and moisture damage threaten to ruin your deck s aesthetics substructure and life span especially with wood decks. The numbers in gray indicate the distance between the support posts. Expansion joints in buildings.

When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches. Simply input your project data and our tool will customize your load tables or diaphragm designs from among more than 73 000 permutations. Dimensional lumber deck beam span chart. Versa dek composite is a versatile long span composite floor system that has visual appeal while providing incomparable thin floor structural advantages.

Nubim vulcraft add in for revit software. With composites you can typically trust brand guidelines but should make adjustments depending on the angle and span of your deck. Even though there s significantly less of a chance of that happening with composite decking it s best to be vigilant. Don t be afraid to go to use a shorter span if you are unsure.

It s better to build a deck that is strong than bouncy and unstable.