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.

Floor joist spans english.

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 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. Joists and rafter spans for. For floor systems that require both simple span and continuous span joists it is a good idea to check both before selecting a joist.

Design values for wood construction with march 2012 and march 2013 addenda. A long thick piece of wood metal or concrete used in buildings to support a floor or ceiling. Most frequent english dictionary requests. 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.

Continuous spans are based on the longest span. 1 200 1k 2k 3k. Some conditions are controlled by continuous span rather than simple span. Simple span joists and rafters with uniform load.

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.