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KNAPP RESIDENCE OUTLINE SPECIFICATIONS <br /> _ SECTION 02520 - PORTLAND CEMENT CONCRETE PAVING <br /> A. PROJECT INCLUDES <br /> 1 . Cast-In-Place Concrete Paving Over Prepared Subbase: <br /> a . Parking areas . <br /> b. Driveways . <br /> c . Vehicular entrances . <br /> d. Walkways . <br /> e. Curbs . <br /> B. QUALITY ASSURANCE <br /> 1 . Construction Tolerance: 1/8 inch in 10 feet for grade and <br /> alignment of top of forms; 1/4 inch in 10 feet for vertical <br /> face on longitudinal axis . <br /> 2 . General Notes : See sheet SS for additional information <br /> pertaining to this section. <br /> C. PRODUCTS <br /> 1 . Concrete: ASTM C 150 , Type 1, Portland cement; ASTM C 33 , <br /> normal weight aggregates; potable water. <br /> a. Design Mix: ASTM C 94 , 4000 psi, 28 day minimum <br /> compressive strength. <br /> b. Slump Limits : 8 inches minimum with superplasticizer, 3 <br /> inches otherwise. <br /> c . Air Content : 5 to 8 percent . <br /> d. Finish: To be selected. <br /> 2 . Wire Mesh: Welded plain steel wire fabric, ASTM A 185 . <br /> 3 . Reinforcing Bars : Deformed steel bars, ASTM A 615 , Grade <br /> 60 . <br /> 4 . Fabricated Bar Mats : Steel bar or rod mats, ASTM A 184, <br /> using ASTM A 615, Grade 60 steel bars . <br /> 5 . Joint Dowel Bars : Plain steel bars, ASTM A 615, Grade 60 . <br /> 6 . Hook Bolts : ASTM A 307 , Grade A threaded bolts. <br /> 7 . Liquid-Membrane Forming and Sealing Curing Compound: ASTM C <br /> 309 , Type I, Class A. <br /> 8 . Bonding Compound: Polyvinyl acetate or acrylic base . <br /> 9 . Epoxy Adhesive: ASTM C 881 . <br /> END OF SECTION <br /> DIVISION 2 - SITE WORK � PAGE 2-7 <br />