Specifications include, but are not limited to: CONCRETE SURFACES: A. During any construction activity if any concrete surfaces are damaged, they shall be repaired by contractor with no additional cost to owner. Minimum length of patch repair shall match existing spacing of joints and shall be done by the contractor who is in concrete business for at least 3 years. Repair shall not be less than four full inches. Repair shall be same as existing walk if more than four inches.; B. Concrete mix shall be minimum 4000 PSI @ 28 days. Slump shall be 4 inch (plus/minus one) with maximum water/cement ratio of 0.5. No calcium chloride is permitted to be used. Free flowing concrete shall be provided only on request and shall be provided only by using admixtures (super plasticizers) expressly designed for that purpose. Water shall not be used. Ambient temperature shall be 40°F and above for placement of concrete. Use Super Diamond Clear by Euclid (or Equal) following manufacturer’s instructions to cure concrete.; C. Synthetic Fiber (by W.R. Grace and Company or equal) shall be added at the rate of one pound of fiber per square yard of concrete. Do not use fibers in exposed aggregate.; D. Forms shall be either wood or metal and shall be straight, free from warp and of sufficient strength to resist spring during construction. Wood forms shall be minimum of 1 ½ inch in thickness (except in curved situations). Metal forms shall have a flat to surface. Whatever form is used it shall be staked and/ or braced sufficiently to hold required line and grade. Any pour not meeting these criteria will be rejected and required to be replaced.; E. An expansion joint shall be used at all junctions that the new concrete meets existing rigid structures such as column, buildings, manholes and other walks. Use Foamtech Expansion joints (or equal) ½ inch in width. Dowell pin and sleeve shall be installed at all expansion joints. Dowell pin shall be #4 rebar in length of 10 inches and sleeves shall consist of ¾” PVC conduit cut into lengths of 6 inches.; A. Mix pavers from several pallets or cubes, as they are placed, to produce uniform blend of colors and textures.; B. Cut unit pavers with motor-driven masonry saw equipment to provide pattern indicated and to fit adjoining work neatly. Use full units without cutting where possible.; C. Joint Pattern: Running bond as detailed.; D. Tolerances: Do not exceed 1/16-inch (1.6-mm) unit-to-unit offset from flush (lippage) nor 1/8 inch in 24 inches (3 mm in 600 mm) and 1/4 inch in 10 feet (6 mm in 3 m) from level, or indicated slope, for finished surface of paving.; E. Expansion and Control Joints: Provide foam filler as backing for sealant-filled joints. Install joint filler before setting pavers.; A. Install concrete slab as specified. Core 2” weep holes completely through slab at 24” centers as specified and fill full depth with #9 aggregate.; B. Install filter fabric over concrete slab immediately before placing sand setting bed. Turn fabric up 1-1/2” at edges of slab.; C. Screed sand setting bed to ¾” compacted depth.; D. Place pavers carefully by hand, maintaining accurate alignment and uniform top surface. Tamp or beat pavers with a wooden block or rubber mallet to obtain full contact with setting bed and to bring finished surfaces within indicated tolerances. Protect newly laid pavers with plywood panels on which workers can stand. If additional leveling of paving is required, and before treating joints, roll paving with power roller.; E. Joint Treatment: Place unit pavers with 1/8” joints. Fill joints by sweeping polymeric sand over paved surface until joints are filled. Remove all excess sand from surface of pavers after joints are filled. Apply water in fine mist per manufacturer’s written instructions.