With inputs for joist span, lumber species, dead and live loads and exterior exposure, you can find just the right joist for your deck. The American Wood Council AWC has an online calculator that can be used to calculate the size and grade of joist needed for a given joist span, on-center spacing
If your deck is slightly out of square different widths , calculate results for both widths, and set out each end to suit. If necessary, adjust number of deck boards to match in both calculations, and see if different board gaps at each end of deck are acceptable, compared to equal gaps and cutting the last board at an angle.
spacing for joists for deck metric Canam - Technical information for the design of joists - Metric This document is provided as a customer service to facilitate the provision of information required for joist design in connection with an order for joists placed with Canam, a business unit of ROOF and deck. MECH. and ELECTRICAL.
Joist sections cantilevered over beams must be calculated as 2x length for beam sizing. A cantilevered beam beam that allows you to extend the deck a few feet beyond the edge of the supporting structure is positioned below the joists to support the weight of the frame.
Prescriptive Residential Exterior Wood Deck Span Guide OUTDOOR PROJE Tables are provided in both metric and imperial units. RESIDENTIAL PRES RIPTIVE EXTERIOR WOOD DE K SPAN GUIDE ANADIAN WOOD OUN IL. 4 DESIGN ASSUMPTIONS Joists and eams Design based on SA O86-14 and N 2015 Live load: 1.9 kPa 40 psf Dead load: 0.5 kPa 10 psf
Linear metres and cost are auto updated when the deck is re-calculated, with individual costs for stumps, bearers and joists displayed in each section. Hit and - buttons to open or close spacing, re-calculating the deck to find how different spacing options effect cost and materials.
Prescriptive Residential Exterior Wood Deck Span Guide OUTDOOR PROJE T SERIES 1 Tables are provided in both metric and imperial units. RESIDENTIAL PRES RIPTIVE EXTERIOR WOOD DE K SPAN GUIDE ANADIAN WOOD OUN IL. 4 DESIGN ASSUMPTIONS Joist Size 8 in Joist Spacing 12 in Joist Spacing 16 in Joist Spacing 24 in Joist Spacing Cantilever
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