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A. General: Comply with joint -sealant manufacturer's written installation instructions for products and <br />applications indicated, unless more stringent requirements apply. <br />B. Sealant Installation Standard: Comply with recommendations in ASTM C 1193 for use of joint sealants <br />as applicable to materials, applications, and conditions indicated. <br />C. Acoustical Sealant Application Standard: Comply with recommendations in ASTM C 919 for use of <br />joint sealants in acoustical applications as applicable to materials, applications, and conditions indicated. <br />D. Install sealant backings of type indicated to support sealants during application and at position required to <br />produce cross-sectional shapes and depths of installed sealants relative to joint widths that allow optimum <br />sealant movement capability. <br />1. Do not leave gaps between ends of sealant backings. <br />2. Do not stretch, twist, puncture, or tear sealant backings. <br />3. Remove absorbent sealant backings that have become wet before sealant application and replace <br />them with dry materials. <br />E. Install bond -breaker tape behind sealants where sealant backings are not used between sealants and backs <br />of joints. <br />F. Install sealants using proven techniques that comply with the following and at the same time backings are <br />installed: <br />1. Place sealants so they directly contact and fully wet joint substrates. <br />2. Completely fill recesses in each joint configuration. <br />3. Produce uniform, cross-sectional shapes and depths relative to joint widths that allow optimum <br />sealant movement capability. <br />G. Tooling of Nonsag Sealants: Immediately after sealant application and before skinning or curing begins, <br />tool sealants according to requirements specified below to form smooth, uniform beads of configuration <br />indicated; to eliminate air pockets; and to ensure contact and adhesion of sealant with sides of joint. <br />1. Remove excess sealant from surfaces adjacent to joints. <br />2. Use tooling agents that are approved in writing by sealant manufacturer and that do not discolor <br />sealants or adjacent surfaces. <br />3. Provide concave joint configuration per Figure 5A in ASTM C 1193, unless otherwise indicated. <br />4. Provide flush joint configuration where indicated per Figure 5B in ASTM C 1193. <br />5. Provide recessed joint configuration of recess depth and at locations indicated per Figure 5C in <br />ASTM C 1193. <br />a. Use masking tape to protect surfaces adjacent to recessed tooled joints. <br />3.4 FIELD QUALITY CONTROL <br />A. Field -Adhesion Testing: Field test joint -sealant adhesion to joint substrates as follows: <br />1. Extent of Testing: Test completed elastomeric sealant joints as follows: <br />a. Perform 10 tests for the first 1000 feet (3 00 m) of joint length for each type of elastomeric <br />sealant and joint substrate. <br />b. Perform 1 test for each 1000 feet (300 m) of joint length thereafter or 1 test per each floor <br />per elevation. <br />Wabasso Beach Park <br />Indian River County <br />DAA Project No. 6008 <br />07920-6 <br />