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INDIAN RIVER COUNTY — NORTH COUNTY REGIONAL PARK PAGE 13 <br />AQUATIC FACILITY ROOFING REPLACEMENT SECTION 075216 <br />JUNE 7, 2019 MODIFIED BITUMINOUS MEMBRANE ROOFING <br />PART 3 EXECUTION <br />3.1 EXAMINATION <br />3.1 LIGHTWEIGHT INSULATING CONCRETE EXAMINATION & PREPARATION <br />A. Verify deck is clean and smooth, free of depressions, waves, or projections, properly <br />sloped to drains. <br />B. Perform and document fastener withdrawal tests confirming the ability of the approved <br />fasteners to achieve the minimum pull out strength require by the roofing manufacturer to <br />achieve the specified wind uplift pressures. <br />C. Saw cut and remove damaged and friable lightweight insulating concrete down to sound <br />substrate. <br />D. Patch substrate with approved lightweight insulating concrete patch in accordance with <br />manufacturer's instructions. <br />3.2 BASE SHEET SECUREMENT TO PREPARED SUBSTRATE <br />A. Lay the base sheet over entire area to be roofed, lapping sides 3 inches and ends 6 <br />inches. Using the specified fasteners, fasten each sheet every 7 inches through laps and <br />stagger fasten the remainder of the sheet in 3 rows on nominal 10 inch centers with <br />fasteners in each row on 7 inch centers. Increase the fastening pattern by 70% at the <br />perimeter of the roof and 160% at the corners. <br />3.3 SUBSTRATE EXAMINATION <br />A. Examine substrate surfaces to receive modified bitumen sheet roofing system and <br />associated work and conditions under which roofing will be installed. <br />1. Verify roof openings, pipes, conduit, sleeves, ducts, and vents through roof are solidly <br />set. <br />2. Verify that curbs, rails, pipe curb assemblies, rooftop mechanical equipment and other <br />roof -mounted elements specified elsewhere are in place and properly anchored. <br />B. Report defects or deficiencies in writing to contractor, design professional and owner's <br />representatives. <br />C. Do not proceed with roofing work until defects or deficiencies have been corrected. <br />D. Acceptance: Commencement of roofing work constitutes acceptance of substrate as dry <br />and meeting criteria for proper installation. Removal and replacement of roofing required <br />