A bond beam is a poured in place concrete trough, re-enforced with rebar, which helps hold the shape of the wall. It is a band of steel and concrete placed around the top of the wall to resist point source forces. At the junction with a wood roof, anchor bolts are tied into the bond beam to then bolt down the wooden sill plate.
|One option is to use thinset mortar to glue slabs of AAC together to form the bond beam trough. Concrete and rebar are then placed in the trough.|
|Another approach is to use pre-made AAC "U-block." This is a faster approach, however, they often break during shipping.|
|A third approach is to use standard CMU U-blocks. You should check with your engineer regarding expansion issues.|
Content under development. March 2008.