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SITE CONCRETE Section 03000 15-1207 H. During and immediately after concrete placing, tighten forms, posts and shores. Readjust to maintain grades, levels and camber. Concrete paving, Curbs, Curb and Gutters, Ramps: 1. Expansion Joints: Install at locations indicated, and so that ma)amum distance between joints is 20' for exterior concrete flatwork unless otherwise shown. Expansion joint material shall be full depth of concrete section. Recess for snap cap and sealant when required. 2. Curbs, Valley Gutter, and Curb & Gutter. Install expansion joints at 80' on center, except when placing adjacent to concrete walks, the expansion joints shall align with the expansion joints shown for the concrete walks. Expansion joint material shall be full depth of concrete section. Recess for snap cap and sealant when required. 3. Isolation Joints: 3/8" felt between walls and exterior slabs or walks so that paved areas are isolated from all vertical features, unless specifically noted otherwise on plans. 4. Exterior Concrete Paving: Install expansion joints at 20' on center maximum, both directions, unless shown otherwise on plans. 5. Ramps; whether shown or not all ramps shall have control joints and expansion joints. a. Control joints on ramps shall be aligned and be placed in between with the vertical posts for the handrails. The curbs, if required shall have control joints that align with the handrail posts. b. Expansion joints shall be placed at the upper, intermediate, and bottom landings. 3.05 FORM COATING A. Before placement of reinforcing steel, coat faces of all forms to prevent absorption of moisture from concrete and to facilitate removal of forms. Apply specified material in conformance with manufacturer's written directions. B. Before re -using form material, inspect, clean thoroughly and recoat. C. Seal all cut edges. 3.06 INSTALLATION A. General: Reinforcement shall be accurately placed at locations indicated on the drawings within required tolerances and providing required clearances. Reinforcement shall be secured prior to placement of concrete such that tolerances and clearances are maintained. Coverage shall be in accordance with Section 1907A.7 of the CBC. Keep a person on the job to maintain position of reinforcing as concrete is placed. Reinforcement must be in place before concreting is begun. Install dowels as shown on drawings. Give notice whenever pipes, conduits, sleeves, and other construction interferes with placement; obtain method of procedure to resolve interferences. All expansion and construction joints in concrete shall have dowels of size and spacing as shown, or as approved by Architect. B. Placing Tolerances: Per ACI 301 or CRSI/WCRSI Recommended Practice for Placing Reinforcing Bars, unless otherwise shown. D