Ontario Building Code Floor Joist Blocking

The ontario building code stud size and spacing 9 23 10 1.

Ontario building code floor joist blocking.

In addition to providing lateral support blocking helps transfer weight to adjacent joists so that the floor acts as a unified system. Attach a continuous rim joist or blocking at the joist end as shown in figures 3 5 and 7. Section r502 10 of the international residential code states that header joists can be the same size as the floor joists when the header joist span isn t greater than 4 feet but if the header joist span is more than 4 feet you ll need to double the header joist and ensure that it s capable of. The ontario building code cantilevered floor joists 9 23 9 9.

Blocking also needs to be provided at the supporting end of a joist. This simply means for it to rest directly on top of another framing member like a drop girder a wall or a pressure treated mud sill there is some criteria the joists must meet according o the 2012 international residential building codes. Complete section 4 of the ontario building code. Notes to table 9 23 3 4.

When choosing 2x6 joists the corresponding ledger board must be a 2x8 minimum. 2 the cantilevered portions referred to in sentence 1 shall not. Rather there are sections of the residential codethat apply to building standards related to structures such as railings stairs stringers treads footings framin and ledger boards we ve tried to summarize them and put them all together for you. Complete section 3 of the ontario building code.

Your online resource for ontaio s complete online building code. Nailing blocking to joists at each end top and bottom with 10d nails. Additional support for the floor joists is achieved by nailing the ends of the joists into headers. Section 9 of the ontario building code.

The best way for a joist to transfer its load is for it to stack. Forming part of sentence 9 23 10 1 1. Cantilevered floor joists 1 floor joists supporting roof loads shall not be cantilevered more than 400 mm beyond their supports where 38 mm by 184 mm joists are used and not more than 600 mm beyond their supports where 38 mm by 235 mm or larger joists are used. Building code requires the use of blocking for floor joists that exceed 2 inches in width by 12 inches in depth.

Size and spacing of studs. 1 see sentence 9 23 3 4 2. Complete section 1 of the ontario building code. Stud size and spacing 1 except as provided in sentence 2 the size and spacing of studs shall conform to table 9 23 10 1.

2 where the bottom wall plate or sole plate of an exterior wall is not nailed to joists or blocking in conformance with table 9 23 3 4 the exterior wall may be fastened to the floor framing by a having plywood osb or waferboard sheathing extend down over floor framing and fastened to the floor framing by nails or staples. What you will notice from this checklist is that there is not really a specific deck building code per se. Floor joist building code requirements.