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R606.3.4 Protection for Reinforcement
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Bars shall be completely embedded in mortar or grout. Joint reinforcement embedded in horizontal mortar joints shall not have less than 5/8-inch (15.9 mm) mortar coverage from the exposed face. Other reinforcement shall have a minimum coverage of one bar diameter over all bars, but not less than 3/4 inch (19 mm), except where exposed to weather or soil, in which case the minimum coverage shall be 2 inches (51 mm).
Minimum corrosion protection of joint reinforcement, anchor ties and wire fabric for use in masonry wall construction shall conform to Table R606.3.4.1.
| MASONRY METAL ACCESSORY | STANDARD |
| Joint reinforcement, interior walls | ASTM A641, Class 1 |
| Wire ties or anchors in exterior walls completely embedded in mortar or grout | ASTM A641, Class 3 |
| Wire ties or anchors in exterior walls not completely embedded in mortar or grout | ASTM A153, Class B-2 |
| Joint reinforcement in exterior walls or interior walls exposed to moist environment | ASTM A153, Class B-2 |
| Sheet metal ties or anchors exposed to weather | ASTM A153, Class B-2 |
| Sheet metal ties or anchors completely embedded in mortar or grout | ASTM A653, Coating Designation G60 |
| Stainless steel hardware for any exposure | ASTM A167, Type 304 |
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