Our page top photo shows a small deck addition to a 1920's bungalow in Poughkeepsie NY. This helps DIY decking installation go much more smoothly! Deck joist spacing is an important element that determines the strength of a deck. Nominal Size. For example, joists spaced 16 inches from the center of the joist next to it can span 1.5 times in feet the depth of their inches. The table gives the maximum distance between joist supports which include beams and the ledger board. For a more rigid feel, 12” or less may be preferred. Related Resource: Lumber Dimensions Explained. For instance, joists that are placed 24 inches apart must be wider than joists placed 16 inches apart. Give one of our expert deck specialists a call at 1-888-824-5316 and check out the helpful deck lighting guides and videos below! If you’re using hardwood or other decking thats 19mm thick the joist spacing will have to be reduced to 450mm centres or less. The spaces found in residential decking include sitting, cooking and dining. https://www.hunker.com/13711816/code-requirements-for-decks spacing when utilizing PT southern yellow pine to be 24". Dimensions stated represent the maximum length … The table below shows figures for domestic applications (uniformly distributed load 1.5kN/ m2) and commercial applications (uniformly distributed load 4.0kN/ m2). With most deck joist spaced at 16” (400mm). This ensures that. The proper deck joist span (distance between supporting beams below the joists) for your deck should be known before you start building and is needed to draft your deck plan.. The spans of joists varies based upon several factors: joist size, spacing between joists, decking material and wood species. Begin by using two fixed points along your house, then with one person standing at each of the points, pull your tape measures out, holding them level and at an even height, to form a precise triangle. It also depends on the joist spacing. For this we check out table 7.2. Hit + and - buttons to open or close spacing, re-calculating the deck to find how different spacing options effect cost and materials. If your deck shape will be complex, the triangulation method is best. 5.1 Joist Spacing Table 5.2 Installing Deck Boards At An Angle Installing decking at an angle can help delineate different areas of the deck, and add variety to your deck designs. When measuring, keep in mind that the typical deck joist spacing is 16" O.C.