Tuesday, July 13, 2010

Brian Harris Homes - block foundations

From time to time we have questions about using Cable-tite as hurricane and high wind tie-down protection with block foundations. There is a little more work to anchor the top plate to the foundation anchor bolts, but it can be done.

I recently worked with Matt Harris at Brian Harris Homes, a new home builder in middle Tennessee. One thing I liked that Harris did was core fill the block to the footer. This offers much better hold down value than blocks with only the top block filled.

After the house was framed and roofed, I went to the crawl space and installed the anchor nut and cap. I drilled a 3/8 hole for the cable, then attached it to the top plate as standard installation. I crawled back under the house and locked the Cable-tite firmly in place.

NOTE: See the small blue electrical wire sticking through the floor above the drill in the photo above? I drilled a small 1/8" hole in the subfloor and used the blue wire to mark my place. Upstairs, I drilled the 3/8" hole for the cable. This is much easier when working in a small crawl space.
In this photo of the finished installation, note that the anchor nut, cap and cable vise are not seen. They are in the crawl space below.