1. CONCRETE SUBFLOORS - SECTION 03_ _ _ a. Slab depression is: 3” (67mm) for 25/32” (20mm) flooring b. The general contractor shall furnish and install the concrete subfloor depressing the slab sufficiently to accommodate the floor system. The slab shall be steel troweled and finished smooth to a tolerance of 1/8” in any 10’ (3mm in any 3 meter) radius by the general contractor. High spots shall be ground level, and low spots filled in with approved leveling compound by the general contractor to the full approval of the Flooring Installer. c. Concrete slab aggregate shall be 3/4” (19mm) screen crushed limestone or similar type material (no river gravel or pea gravel), free of curing agents. Concrete shall develop an average of 3,500-PSI (246 Kg/cm) compression after 28 days. 2. MEMBRANE WATERPROOFING - SECTION 07_ _ _ a. Concrete subfloors on or below grade shall be adequately waterproofed beneath the slab and at the perimeter walls and on earth side of below grade walls by general contractor using suitable type membrane. 2.1 MATERIAL A. Vapor Barrier - 6-mil (0.2mm) polyethylene. B. Resilient Pad 1. Connor Rezill Cushion, Rebonded Polyurethane, 8 PCF (128 kg/m³) foam blanket. C. Subfloor 1. Lower Layers - Pre-manufactured V I P sandwiched subfloor panels. 2. Upper Layer – 11/32” (9mm) APA rated sheathing, Exposure 1. D. Flooring (Connor Laytite Maple) 1. 25/32” X 2-1/4” (20mm x 57mm), First Grade, Northern Hard Maple flooring, Crush Bead, TGEM, MFMA Grade marked and stamped as manufactured by Connor Sports, Amasa, MI. 2. Optional grades (specify above or delete) - First Grade, Third Grade E. Fasteners 1. Flooring Fasteners - Minimum 1-3/4” (44mm) barbed cleats or coated staples. 2. Subfloor Fasteners - 3/4” (19mm) staples or equivalent. 3. Concrete Fasteners – 1-1/2” (38mm) RAWL Spikes or equivalent as dictated by site conditions-achieving a minimum 900 lbs (408.6 Kg) pullout strength. F. Finish Materials - Connor oil modified polyurethane seal and finish or equal. G. Game Lines - Game line paint shall be compatible with finish. H. Wall Base - 3” X 4” (76mm x 102mm), heavy duty, molded, vented cove base with pre-molded outside corners. I. Protective Floor Cover – (specify or delete) Provide court tiles selected from manufacturer’s standard dimensions and colors.
