How does wood framing actually attach to a concrete foundation?

Question

how is the rebar actually attached to the wood?

is there another way that doesn't involve rebar?

Answer 1

Normally, in home construction anyway, re bar has nothing to do with it. Sometimes, they will use threaded rods and bolt on the sill plate, but usually, not. We always just shot the sill plate down with the powder powered guns, (they use what looks like a blank 22 cartridge.) occasionally, they will nail on a metal device that keeps the wood from touching the concrete, then shoot it down to the concrete. this is often done when it is a post for a porch or when using post and beam constructions. Never did we use re bar for attaching wood to anything.

Answer 2

1

Answer 3

For new construction, use the j-bolts, sunk into the wet concrete. Use a washer and lag nut to clamp down on the pressure treated wood. For renovation work, get TAPCON™ screws. Buy 2 ¾ " tapcons (they are blue screws). Decide when you buy them if you want the hex head or the Phillips drive type. Get ¼" size and use a 3/16 inch masonry bit. The bit type should be compatible with your drill chuck. Go right through the wood (which should be pressure treated stud wood!) and straight into the masonry. Wear eye protection! Keep an eye out for metal shavings coming up, because then you will want to STOP! You may have hit a drain pipe! Barring that, drill at least a half inch deeper than the tapcon needs to go, and drill in the tapcons. If you didn't clear the whole down deep enough, they tend to break.

Answer 4

The rebar should not be attached to the wood.
The house frame should be attached to the concrete with expansion bolts. Another way, cheaper than expansion bolts, to use 4" nails. Drill holes (using a hammer drill with a carbide bit, drill a hole 1/32" larger than the nail, cut a piece of rebar wire 1 to 2 inches longer than the depth of the hole. Put the wire down to the bottom of the hole and bend the remainder over the wood. Now drive your nail into the hole. Do this between every second wall stud, and your frame is securely attached to the concrete.
If you doubt the holding power of this method, drive one nail almost all the way in and then try to pull it out!!

Answer 5

Wood framing dosnt attach to rebar? Rebar is in concrete to give it rigidity and strength. Wood, mostly used is pressure treated wood 2X4's or 2X6's are shot into the floor using .22 caliber cartriges with lagbolts inserted to secure it safely to the concrete. The pressure treated wood is used because of its moisture resistant coating, due to the fact it will be on a cold damp basement floor. There is no rebar used, unless an electrician bonds the rebar for grounding purposes.

Answer 6

I vote for expansion anchors. They will probably be easier than setting up J-bolts with your foundation formwork, and you can set them after the foundation is already pored (which it might be in this case).

You may want to consult your local building inspector though because there can be structural requirements on where, what type, and how many you need.

If it's just a small wall that's being framed, powder-actuated nails might work too.

Answer 7

When the concrete foundation is placed anchor bolts are put into the wet concrete. These are 5/8" x 10" bolts with an "L" shape on the end in the concrete. Once the concrete is dry a pressure treated "mudsill" had holes drilled to match the bolt spacing and is bolted to the concrete.

Answer 8

when the concrete is initially poured and still wet you put bolts in it at predetermined spots with the threads showing. Holes are cut into the end plate of the studs and then the frame is bolted down to the concrete

Answer 9

Rebar? A bolt is set in the foundation, then a 2x4 is layed over it with holes for the bolts and nuts and washers hold the wood down.

Answer 10

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