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ST. BARBARA CATHOLIC SCHOOL TASK 2 75-24272-01 <br />DIOCESE OF ORANGE SEPTEMBER 12TH, 2024 <br />SANTA ANA, CA BID & PERMIT SET <br /> <br />CAST-IN-PLACE CONCRETE 033000 - 4 <br />2.7 CONCRETE MIXTURES FOR BUILDING ELEMENTS <br />A. Normal-Weight Concrete: <br />1. Minimum Compressive Strength: 3000 at 28 days. <br />2. Maximum W/C Ratio: 0.50. <br />3. Slump Limit: 4 inches, plus or minus 1 inch. <br />2.8 FABRICATING REINFORCEMENT <br />A. Fabricate steel reinforcement according to CRSI's "Manual of Standard Practice." <br />2.9 CONCRETE MIXING <br />A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to <br />ASTM C 94/C 94M, and furnish batch ticket information. <br />1. When air temperature is between 85 and 90 deg F, reduce mixing and delivery time from <br />1-1/2 hours to 75 minutes; when air temperature is above 90 deg F, reduce mixing and <br />delivery time to 60 minutes. <br />PART 3 - EXECUTION <br />3.1 FORMWORK INSTALLATION <br />A. Design, erect, shore, brace, and maintain formwork, according to ACI 301 to support vertical, <br />lateral, static, and dynamic loads, and construction loads that might be applied, until structure <br />can support such loads. <br />B. Construct formwork so concrete members and structures are of size, shape, alignment, <br />elevation, and position indicated, within tolerance limits of ACI 117. <br />C. Chamfer exterior corners and edges of permanently exposed concrete. <br />3.2 EMBEDDED ITEM INSTALLATION <br />A. Place and secure anchorage devices and other embedded items required for adjoining work that <br />is attached to or supported by cast-in-place concrete. Use setting drawings, templates, diagrams, <br />instructions, and directions furnished with items to be embedded. <br />3.3 STEEL REINFORCEMENT INSTALLATION <br />A. General: Comply with CRSI's "Manual of Standard Practice" for fabricating, placing, and <br />supporting reinforcement.