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' 40-27 BUILDING <br />BELOW -GRADE WATERPROOFING <br />BRPH ARCHITECTS -ENGINEERS, INC. <br />PART 3 - EXECUTION <br />' 3.1 EXAMINATION <br />' <br />A. <br />Examine substrates, areas, and conditions, with Installer present, for compliance with <br />requirements and other conditions affecting <br />performance. <br />1. Verify that concrete has cured and aged for minimum time period recommended <br />by waterproofing manufacturer. <br />2. Verify that concrete is visibly dry and free of moisture. Test for capillary moisture <br />by plastic sheet method according to ASTM D 4263. <br />' <br />3. Verify that compacted subgrade or concrete mud -slab is dry, smooth, and sound; <br />and ready to receive adhesive -coated HDPE sheet. <br />4. Verify that concrete substrates are smooth, float finished and monolithic. <br />5. Verify that vertical soil retention systems are prepared using drainage composite, <br />plywood, shotcrete or other approved means to achieve a uniform, sound and <br />continuous substrate ready to receive the adhesive -coated HDPE Sheet. <br />6. Proceed with installation only after unsatisfactory conditions have been <br />' <br />corrected. <br />' <br />3.2 <br />SURFACE PREPARATION <br />A. <br />Clean, prepare, and treat substrates according to manufacturer's written instructions. <br />Provide clean, dust -free, and dry substrates for waterproofing application. <br />B. <br />Cast -In -Place Concrete Substrates: <br />' <br />1. Do not proceed with installation until concrete has properly cured and dried <br />(minimum 7 days for normal structural concrete and minimum 14 days for <br />lightweight structural concrete). <br />' <br />2. Fill form tie rod holes with concrete and finish flush with surrounding surface. <br />3. Repair bugholes over 13 mm (0.5 in.) in length and 6 mm (0.25 in.) deep and <br />finish flush with surrounding surface. <br />' <br />4. Remove scaling to sound, unaffected concrete and repair exposed area. <br />5. Grind irregular construction joints to suitable flush surface. <br />C. <br />Mask off adjoining surfaces not receiving waterproofing to prevent spillage and <br />overspray affecting other construction. <br />D. <br />Remove grease, oil, bitumen, form -release agents, paints, curing compounds, and <br />other penetrating contaminants or film -forming coatings from concrete. <br />E. <br />Remove fins, ridges, mortar, and other projections and fill honeycomb, aggregate <br />holes, <br />pockets, and other voids. <br />F. Prepare, fill, prime, and treat joints and cracks in substrates. Remove dust and dirt <br />' from joints and cracks according to ASTM D 4258. <br />C06922.001.00 07 14 10 - 7 <br />05-22-14 <br />