Ontario Building Code Floor Joist Span Table

Tree sawed and engineered.

Ontario building code floor joist span table.

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. A 2 2x10 can span 10 feet and so on. Joists for use in residential framing applications fall into two different categories. The ontario building code spans for joists rafters and beams 9 23 4 2.

Notes to table a 2. 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. A double 2x12 beam can span 12 feet.

Live load floor joist span tables in chapter 7 of the state residential code based on the 2012 international residential code. Also available for the android os. These charts are for 30 pound per square foot snow load on the roof. Span calculator for wood joists and rafters also available for the android os.

The floor joist span chart and building code requirements are based on data from the 2012 international residential code using number 2 lumber. 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. 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. The numbers in gray indicate the distance between the support posts.

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. Types of floor joists. 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. Dimensional lumber deck beam span chart.

2 spans for floor joists that are not selected from tables a 1 and a 2 and that. This page focuses on the tree sawed variety. Span charts and 2012 irc building codes for girders and headers. All other data is available on page 121 of the 2012 international residential code.

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.