Ontario Building Code Floor Joist Span Table

Live load floor joist span tables in chapter 7 of the state residential code based on the 2012 international residential code. A double 2x12 beam can span 12 feet. I asked my local building official how he checks a deck plan to make sure the joist size and spacing combination will meet requirements of the building code he goes to the 40 lb.

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Notes to table a 2.

Ontario building code floor joist span table.

2 spans for floor joists that are not selected from tables a 1 and a 2 and that. F gris users building 2008 revised docs 009 cbc handout span charts doc 1 of 10 reprinted from cbc revised 01 9 08 excerpts from table 2308 8 2 c b c. Floor joist spans for common lumber species residential living areas live load 40 psf l 360 dead load 10 psf dead load 20 psf 2x6 2x8 2x10 2x12 2x6 2x8 2x10 2x12. The numbers in gray indicate the distance between the support posts.

Ontario building code wood beam span tables december 15 2018 by arfan leave a comment wood i beam joists cantilevers in the 2016 code professional deck builder wood i beam joists floor joist span chart leasord co floor beam span tables calculator. Types of floor joists. This page focuses on the tree sawed variety. Joists for use in residential framing applications fall into two different categories.

Table r502 3 1 2 shall be used to determine the maximum allowable span of floor joists that support other areas of the building other than sleeping rooms and attics provided that the design live load does not exceed 40 pounds per square foot 1 92 kpa and the design dead load does not exceed 20 pounds per square foot 0 96 kpa. The ontario building code spans for joists rafters and beams 9 23 4 2. 1 spans apply only where the floors serve residential areas as described in table 4 1 5 3 or the uniformly distributed live load on the floor does not exceed that specified for residential areas as described in table 4 1 5 3. 2 no bridging is assumed for spans for floor joists with concrete topping.

G dsdsystem handouts building residential beamandjoistspantables docx page 1 of 2 building inspections beam and joist span tables built up wood floor beams supporting one floor in a house maximum spans for uniformly distributed loads species and grade supported built up beam size joist length 3 2x8 4 2x8 3 2x10 4 2x10 3 2x12 4 2x12. A 2 2x10 can span 10 feet and so on. Table a 3 maximum spans for ceiling joists attic not accessible. Tree sawed and engineered.

Dimensional lumber deck beam span chart. Spans for joists rafters and beams 1 except as required in sentence 2 and article 9 23 13 10 the spans for wood joists and rafters shall conform to the spans shown in tables a 1 to a 7 for the uniform live loads shown in the tables. Floor joist span tables for various sizes and species of wood. The floor joist span chart and building code requirements are based on data from the 2012 international residential code using number 2 lumber.

Joist span table use these tables to determine floor joist spans based on grade of lumber size of joist floor joist spacing and a live load of 30 lbs ft 2 or 40 lbs ft 2 these tables can also be used to determine deck joist span. When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches.