How To Attach Plywood Sheeting To House Rim Joists

I ve framed 7 houses but all slab on grade first one with a rim joist.

How to attach plywood sheeting to house rim joists.

The rim joist is attached at the ends of the joists to keep the joists stable in the upright position and to carry the weight of the walls and roof above. A ledger relies on the fasteners and strength of the wood ledger board and rim board of the house to carry the deck live and dead loads. The nail tip must not exceed the width of the floor joist it is being driven into. Your goal is to have the plywood end exactly half way across the joist so that the new plywood can start on this spot.

Measure and dry set the first piece. House floor joists are generally about 8 to 10 inches wide so nail length is not an issue. The builder used engineered i joists with just plywood in place of a rim joist or fiber strand board. I m sure the industry recommendation is to use adhesive when attaching subfloor panels to floor joists.

Should i start sheathing at bottom sill and install blocking at the sheet break or start with a small piece at the bottom and install a full sheet to the top. The main job of a rim joist also called a band joist is to provide lateral support for the joists to prevent the joists from leaning under the weight of the load bearing walls resting on them. Attaching a deck ledger securely is only half the work of installing a ledger. Use a 3 16 inch head ring shank nail to hold plywood underlayment for a subfloor in place.

A 9 sheet falls a couple inches short. The rim joist will typically sit on the edge of the sill plate. Ring shank fasteners are the recommendation as far as i know but as time has evolved screws have proven to be a better choice of fasteners just don t know if screws have in fact officially made it into the printed documents as yet. The rim joist also covers the ends of the joists to cap off the joist cavities the open spaces between the joists additionally rim joists provide a solid mass of wood that is handy for nailing into.

In the past on stud walls we run the sheathing perpendicular to the studs 4 high and down over the rim joists. I started to build a deck today and was cutting off the siding to attach the ledger and found that their was no rim joist. A 3 4 inch sheet of plywood weighs approximately 75 lbs. This deck is one story off the ground and is 8 x32.

However we re just about to start work on a very tall house and i m wondering if we need to sheathe over the rims or if it is acceptable to sheathe and raise the walls and then infill the rim area afterwards with a foot or so of sheathing. It is common to notch the rim joist over the anchor bolts.