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<br /> <br />THE CITY OF SUNNY ISLES BEACH <br />PROJECT NO. 21-1011 <br />BUILDING DEPARTMENT RELOCATION TO ANNEX <br /> <br />Project No. 21-1011 November 2024 031000 -14 <br />shall be prepared in accordance with the requirements of SECTION 03300 Cast-in- <br />Place Concrete. Except on horizontal wall construction joints, wall to slab joints, <br />or where otherwise indicated, at all joints where Waterstop are required, the joint <br />face of the first pour shall be coated with a bond breaker as indicated herein. <br />D. Retrofit Joint Preparation: <br />1. Existing surfaces to receive a retrofit Waterstop shall be clean and free from any <br />loose or foreign material. Surface shall be given a light sandblast or hydro blast <br />finish to 1/8-inch amplitude prior to application of epoxy and Waterstop. <br />E. Construction Joint Sealant: <br />1. Construction joints in water-bearing floor slabs, and elsewhere as indicated, shall <br />be provided with tapered grooves which shall be filled with a construction joint <br />sealant. The material used for forming the tapered grooves shall be left in the <br />grooves until just before the grooves are cleaned and filled with joint sealant. After <br />removing the forms from the grooves, all laitance and fins shall be removed, and <br />the grooves shall be sandblasted. The grooves shall be allowed to become <br />thoroughly dry, after which they shall be blown out; immediately thereafter, they <br />shall be primed, bond breaker tape placed in the bottom of the groove, and filled <br />with the construction joint sealant. The primer shall be furnished by the sealant <br />manufacturer. No sealant will be permitted to be used without a primer. Care shall <br />be used to completely fill the sealant grooves. Areas designated to receive a <br />sealant fillet shall be thoroughly cleaned, as outlined for the tapered grooves, prior <br />to application of the sealant. <br />2. The primer and sealant shall be placed strictly in accordance with the printed <br />recommendations of the manufacturer, taking special care to properly mix the <br />sealant prior to application. The sides of the sealant groove shall not be coated <br />with bond breaker, curing compound, or any other substance which would interfere <br />with proper bonding of the sealant. Sealant shall achieve final cure at least 7 days <br />before the structure is filled with water. <br />3. Sealant shall be installed by a competent waterproofing specialty contractor who <br />has a successful record of performance in similar installations. <br />4. Thorough, uniform mixing of 2-part, catalyst-cured materials is essential; special <br />care shall be taken to properly mix the sealer before its application. Before any <br />sealer is placed, the CONTRACTOR shall arrange to have the crew doing the WORK <br />carefully instructed on the proper method of mixing and application by a <br />representative of the sealant manufacturer. <br />5. Any joint sealant which fails to fully and properly cure after the manufacturer's <br />recommended curing time for the conditions of the WORK hereunder shall be <br />completely removed; the groove shall be thoroughly sandblasted to remove all <br />traces of the uncured or partially cured sealant and primer, and shall be re-sealed <br />with the indicated joint sealant. Costs of such removal, joint treatment, re-sealing, <br />and appurtenant work shall be the CONTRACTOR’s responsibility. <br />F. Hydrophilic Waterstop <br />1. Where a hydrophilic Waterstop is called for in the Contract Documents, it shall be <br />installed with the manufacturer's instructions and recommendations except as <br />modified herein.