How often do you put anchor bolts?

Every bottom plate needs a minimum of 2 bolts. There must be an anchor bolt within 12 inches of each end. And the maximum spacing between any bolts on a single bottom plate is 6 feet.

Of course for long pieces, there is the requirement of bolts every 6” o.c. mainly so the sill plate stays firmly attached to the foundation wall especially during earthquakes with “Surface waves”. That is what the anchor bolts in between the plate”s end pieces are for.

Also, what size anchor bolts do I need? The IRC stipulates that anchor bolts need to be embedded into the concrete a minimum of seven inches, but keep in mind that you need at least 2-3 inches protruding from the concrete to accommodate the pressure treated sill plate, as well as a plate washer and a nut.

what is the purpose of anchor bolts in a sill plate?

Sill Plate Installation During the construction of a new home, the foundation crew sets heavy-duty steel anchor bolts, called J-bolts, into the wet concrete at the top of the foundation wall. The J-bolts have a bend at the bottom that helps to lock the bolts into the concrete after it cures.

How do you anchor a sill plate?

One method for fastening sill plates is the use of cast-in-place anchors, commonly referred to as “J” Bolts. “J” bolts are anchors in the shape of the letter J with threads on the end opposite of the bent end. These bolts are set in place before the concrete is poured.

What size wedge anchor do I need?

As a rule of thumb, the space for the nut and washer is equal to the diameter of the wedge anchor being used. For example, if a 2×4 is being fastened to concrete with a 1/2” wedge anchor then the minimum length of wedge anchor would be 1-1/2”(2×4) + 2-1/4”(minimum embedment) + 1/2”(space for nut and washer) = 4-1/4”.

What is the rule of thumb for the spacing of concrete fasteners?

A rule-of-thumb in the concrete-fastener industry is that the minimum spacing should be 10 diameters from each anchor, and measured center to center. The spacing from an unsupported edge should be at least five-anchor diameters. Wedge anchors provide the widest range of concrete fasteners, from 1/4 to 1-1/4-in.

What is the maximum distance between foundation anchor bolts for sill plates?

Sill plates supporting floor systems, on walls having 7 feet (2,135 mm) or more of unbalanced fill, shall be anchored to the foundation with bolts spaced not more than 12 inches (305 mm) from corners and a maximum of 4 feet (1,219 mm) on center.

How do you attach a stud wall to a sill plate?

Lay your top plate next to the bottom plate, mark your studs, doors, windows, etc, then build the wall. Use hot dipped #16 nails in the bottom plate. Put down caulk and/ or sill padding, set the wall on the bolts, brace, put on the hot dipped washers and nuts, tighten up.

How thick should a sill plate be?

Sill Plate. As far as I can tell the IRC says that the sill plate thickness has to be an inch and a half, or 2x.

What is the minimum number of anchor bolts required for anchoring a 12 foot section of wood sill plate to a foundation?

number of anchor bolts required Sill plates supporting floor systems, on walls having 7 feet (2,135 mm) or more of unbalanced fill, shall be anchored to the foundation with bolts spaced not more than 12 inches (305 mm) from corners and a maximum of 4 feet (1,219 mm) on center.

What is the first step in installing a sill plate?

The first step in building walls on a slab is to lay sill plates. The Sill Plate will secure the home to the slab. It will also serve as a nailing surface and moisture barrier between the walls and the slab.

How do floor joists attach to sill plate?

How to Nail Floor Joists to the Sill Plate Align one edge of a standing joist with the appropriate layout mark on the sill plate. Start an 8-penny nail as a toenail, 1 inch from the end of the joist and 1 inch from the bottom of the joist. Repeat the previous step and start another 45-degree toenail at the opposite side of the joist.