Originally Posted By: phughes This post was automatically imported from our archived forum.
When inspecting brick veneer, is there a maximum allowable brick overhang. In other words, if the brick is not setting fully upon the brick ledge on a slab foundation, but extends out beyond the ledge in some areas. Does anyone have any documenting to support the maximum amount.
Originally Posted By: rcloyd This post was automatically imported from our archived forum.
Peter:
This excerpt is from the Brick Industry Association "Technical notes on Brick Construction" section 7A:
Sealants
One of the most important items for preventing water penetration is the use of proper sealants and caulking around openings in masonry walls. Too frequently, caulking is considered a means of correcting or hiding poor workmanship rather than as an integral part of construction.
The subject of joint sealants is far beyond the scope of this Technical Notes, but a few comments are in order. For normal joints around windows and other openings, where little or no movement is expected, caulking should be done using a solvent-based acrylic sealant or a butyl caulk. For joints subject to large movements, such as expansion joints, an elastomeric joint sealant, conforming to the requirements of ASTM C 920, should be used. This includes silicones, urethanes and polysulfides. In no case should an oil-based caulking material be used. Regardless of the type of sealant chosen, proper priming and backer rods are a must.
Originally Posted By: jpeck This post was automatically imported from our archived forum.
1/3 the width of the brick.
That is what is allowed for corbeling out brick, and that is what that overhang amounts to.
Okay, now that I have said that (because that is what everyone thinks), I will offer the correct thinking on it.
NONE. No overhang.
This is because, when corbeling out brick, as you corbel out, you also build the wall up solid behind the corbeled out surface. I.e, the wall is fully weighted to the full bearing at the bottom. The face of the wall is corbeled out, but the wall itself is gains thickness as the back side of the wall goes up vertically from the bottom bearing course.