Floor Joist Spans English

Simple span joists and rafters with uniform load.

Floor joist spans english.

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. Design values for wood construction with the march 2013 addendum joists and rafter spans for common loading conditions can. 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. The spans listed are the clear distance between supports.

Most frequent english dictionary requests. Continuous spans are based on the longest span. A long thick piece of wood metal or concrete used in buildings to support a floor or ceiling. 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.

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. 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. True floor joist span calculations can only be made by a structural engineer or contractor. 1 200 1k 2k 3k.

Some conditions are controlled by continuous span rather than simple span. Joists and rafter spans for. Design values for wood construction with march 2012 and march 2013 addenda.