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' 2 . Size : <br /> Manufacturer ' s standard units with nominal face dimensions of 16 " long x <br /> ' 8 " high ( 15 -5/8 " x 7-5/8 " actual) x thicknesses indicated. <br /> 3 . Type II C . M. U. , moisture controlled units . <br /> ' 4 . Hollow Loadbearing Block : ASTM C-90 and as follows : <br /> a. Weight Classification : Normal weight. <br /> 2 . 04 MORTAR AND GROUT MATERIALS <br /> A. Portland Cement: <br /> ASTM C- 150, Type I, except Type III may be used for cold weather construction. <br /> Provide natural color or white cement as required to produce required mortar color. <br /> B . Hydrated Lime : <br /> ASTM C-297, Type S . <br /> ' C . Aggregate for <br /> Mortar: <br /> ASTM C- 144 , except for joints less than 1 /4 " use aggregate graded with 100 % <br /> passing the No . 16 sieve . <br /> ' D . Aggregate for Grout : <br /> ASTM C404 . <br /> ' E. Joint Reinforcement : <br /> Provide welded-wire units prefabricated with deformed continuous side rods and <br /> plain cross rods into straight lengths of not less than 10' , with prefabricated corner <br /> ' and tee units , and complying with requirements indicated below: <br /> 1 . Width : <br /> ' Fabricate joint reinforcement in units with widths of approximately 2 " less <br /> than nominal width of walls and partitions as required to provide mortar <br /> coverage of not less than 5/8 " on joint faces exposed to exterior and %s' <br /> elsewhere . <br /> 2 . Wire Size for Side Rods : <br /> ' 9 gauge galvanized . <br /> 3 . Wire Size for Cross Rods : <br /> ' 9 gauge galvanized <br /> 4 . For single-wythe masonry provide type as follows with single pair of side <br /> rods : <br /> a. Truss design, as manufactured by Dur-o -wall, (or approved equal) , <br /> with diagonal cross rods spaced not more than 16 " o . c . Units to be 9 <br /> gauge hot dipped galvanized . <br /> 04200 -3 <br />