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Wall Ties Ties for veneer applications over steel stud back-up systems should be of a two-piece, adjustable variety. They should be hot-dipped galvanized for protection against corrosion and spaced per every 1.67 sq.ft. of wall area. See Brick Industry Association Technical Notes 28B Revised. Ties for these cavity wall applications may be adjustable or unit ties. Corrosion protection should be a minimum of mill galvanizing. Tie spacing should not exceed 3 sq. ft. of wall area. See Brick Industry Association Technical Notes 21 series. Glazed
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