Retrofitting Your Home & what is needed for the job.

This is what is needed by Your Contractor to do the exact job to California State Building and Engineering codes.

Notice the plates used to bolt down the Sill Plate (that's the wooden 2 by 6 resting across the concrete foundation) this is now a 2 by 3 inch square piece of steel, with a hole in the middle, called a "square plate washer", it is much more stable & stronger. Nails placed in the plywood must be every 4 inches minimum apart.

Drawing #1


Drawing # 2

Notice the vertical "Steel Anchor Plates" for direct attachment to concrete foundations below.

Special Note: Although inexpensive "CDX" plywood is acceptable. It is a sign of quality if the contractor proposes using "Structural grade #1, 5 ply plywood".

Drawing # 3 "The Concrete Bolt needed"

Drawing # 4 are the "Metal framing anchor plates". They have 12 holes in them for 12 nails or 12 screws which must be used when they are put in place. See drawing #1 above for placement of these metal framing plates.

 

 

Have You really seen what happens when an earthquake hits an UN-Retrofitted cripple wall? Go to our "Cripple Walls? Page" & see the full animated picture.