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It is not always safe to assume that an architectural concrete veneer will be the same height as the cmu backup ( 8 inches) or at the least modularly coursed in a manner that allows a bed joint to
exist at the same level in the veneer and the backup. Without this joint alignment, installing traditional adjustable wall ties is just not possible. When a veneer will not be aligned with the backup coursing, there
are several ways to tie the wythes together. Since adjustable , eye and pintle type, joint reinforcing is only allowed to have a +/- 1 1/4 inch vertical adjustability, that option is generally not enough.
The solution to making this connection is to use individual anchors. There are many different kinds of individual veneer anchors that can be fastened to the backup material at the code required
spacing of 1 tie per 2.67 ft2 of wall area. The Pos-I-Tie (Heckmann Building Products - www.heckmannbuildingprods.com) and the 2-Seal Tie (Hohmann & Barnard - h-b.com) both are easy to use individual anchors
that are designed to penetrate the rigid insulation and create a positive connection with the backup, using only one screw. Both anchors are available in various sizes and configurations to allow for differing
insulation thicknesses and different backup materials. The 2-Seal Tie and the Pos-I-Tie are fastened by drilling a single pilot hole and installing the tie into the backup using a special chuck adapter on a
standard, variable clutched, drill. Heckmann also has a Pos-I-Tie Wing Nut tie which employs a standard hex drive screw into a piloted hole.
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