Barrier Bac Bentonite Application
- 1. VAPOR RETARDERS<br />Retain one sheet vapor retarder from first four paragraphs below if a non-bituminous water vapor retarder is required.<br />Retain option and insert perm rating in first paragraph below if requiring a stricter perm rating than the 0.3 perms permitted by ASTM E 1745. See Evaluations.<br />Sheet Vapor Retarder: ASTM E 1745, Class A. Material must be made with 100% virgin polyolefin resin. Contractor must install per manufacturers recommended installation instructions and per ASTM 1643. Include manufacturer's recommended adhesive or pressure-sensitive tape.<br />See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers and products. See Division 01 Section \" Product Requirements.\" <br />Products: Subject to compliance with requirements, provide one of the following:<br />Inteplast Group, Ltd. Barrier-Bac Division; VB-350<br />Fortifiber Building Systems Group; Moistop Ultra 15.<br />Raven Industries Inc.; Vapor Block 15.<br />Reef Industries, Inc.; Griffolyn Type-105.<br />Stego Industries, LLC; Stego Wrap 15 mil Class A.<br />Viper; Vaporcheck 15.<br />Penetration Accessories: Manufacturers standard premolded or field manufactured products and Volclay CG-50 granular sodium bentonite with free swell 24ml / 2g and dry bulk Density of 65 lbs./ft3.<br />Retain option and insert perm rating in first paragraph below if requiring a stricter perm rating than the 0.3 perms permitted by ASTM E 1745. See Evaluations.<br />Retain option and insert perm rating in first paragraph below if requiring a stricter perm rating than the 0.3 perms permitted by ASTM E 1745. See Evaluations.<br />Retain first paragraph below if generic polyethylene, not complying with ASTM E 1745, is permitted.<br />Retain first paragraph below if bituminous vapor retarder is required.<br />Retain two paragraphs below if using a granular course over vapor retarder. Products are based on ACI 302.1R descriptions of granular materials.<br />Retain first paragraph below for a \" crusher-run\" course at least 4 inches (100 mm) thick.<br />Granular Fill: Clean mixture of crushed stone or crushed or uncrushed gravel; ASTM D 448, Size 57, with 100 percent passing a 1-1/2-inch (37.5-mm) sieve and 0 to 5 percent passing a No. 8 (2.36-mm) sieve.<br />Proposed change:<br />Penetration Accessories: Manufacturers standard premolded or field manufactured products and granular sodium bentonite with free swell 24ml / 2g and dry bulk Density of 65 lbs./ft3.<br />