Floor Joist Spans English

Span ft 1 5 2 0 2 5 3 0 3 5 2 30 22 18 15 13 4 59 44 36 30 25 6 89 67 53 44 38 8 119 89 71 59 51 10 148 111 89 74 63 12 178 133 107 89 76 14 207 156 124 104 89 16 237 178 142 119 102 18 267 200 160 133 114.

Floor joist spans english. Floor joist maximum spans joist joist spacing simple span spacing multiple span series depth 12 9 o c 16 19 2 2412 91 29 178 019 158 079 148 099 138 109 188 079 178 009 158 079 138 119 7gpi 20 11. The canadian wood council s span book includes floor joist span tables for 15 5 mm and 18 5 mm subfloors either nailed or glued and nailed to the joists. The canfor span calculator span calculator for wood joists and rafters performs calculations for four species and numerous grades of commercially available softwood lumber as found in the 2012 national design specification nds for wood construction supplement. Simple span joists and rafters with uniform load.

This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. 1 200 1k 2k 3k. The spans listed are the clear distance between supports. Most frequent english dictionary requests.

Joists and rafter spans for. Typical deck details page 1 minimum beam sizes inches rafter understanding floor joist spans framed metal wall art premiumpsds co help wanted on beam span and strength in timber framing. True floor joist span calculations can only be made by a structural engineer or contractor. For floor systems that require both simple span and continuous span joists it is a good idea to check both before selecting a joist.

The american wood council awc span calculator for wood joists and rafters span calc performs calculations for all species and grades of commercially available softwood and hardwood lumber as found in the 2012 national design specification nds for wood construction supplement. A long thick piece of wood metal or concrete used in buildings to support a floor or ceiling. Continuous spans are based on the longest span.