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Table 4.2:Acceptable Materials <br /> COMPONENT MATERIAL REQUIREMENT <br /> All coatings,sealants, (Various) ANSI/NSF 61 Certification;AWWA Standards including but <br /> patching compounds, not limited to: D100. <br /> bearing pads and other <br /> materials inside of <br /> clearwell <br /> East Clearwell Roof System Aluminum shapes, Aluminum Association Aluminum Design Manual; <br /> (Option 1) plates and ASTM Standards including but not limited to:ASTM B209, <br /> accessories ASTM B210,ASTM B221,ASTM B308,ASTM B557,and <br /> ASTM E101. Rolled or extruded structural shapes shall be <br /> Alloy 6061-T6;roof panels shall be Alloy 3000 or 5000 <br /> series.AWWA Standards including but not limited to: D108. <br /> East Clearwell Roof System Steel shapes, AISC Manual of Steel Construction,ASTM Standards <br /> (Option 2) plates and including but not limited to:ASTM A992,A572, and A36; <br /> accessories AWWA Standards including but not limited to: D100. <br /> Gutter and down-spouts Aluminum Primary aluminum material, minimum 0.032"thickness. <br /> All bolts anchoring into Type 316 SST ASTM A320, B8M Class 1 stainless steel <br /> existing clearwell wall and <br /> columns.All bolts, including <br /> those used in aluminum <br /> structures <br /> Platforms, ladders,pipe Aluminum Aluminum Structural Shapes shall be alloy 6061-T6 per <br /> supports and ASTM B308 <br /> miscellaneous metal Aluminum Pipe and Tubing shall be alloy 6061-T6 per ASTM <br /> components B241 <br /> Aluminum Plate shall be alloy 6061-T6 per ASTM B209 <br /> Aluminum Raised Pattern(Checkered) Plate shall be alloy <br /> 6061-T6 per ASTM B632 <br /> Aluminum Grating and Treads shall be alloy 6061-T6 per <br /> ASTM B221 <br /> Interior columns(if used) Reinforced ACI 301,ACI 318,ACI350.ASTM A666,ASTM A240,ASTM <br /> concrete,Type 304 A276,ASTM A269,ASTM A778,Grade A,Type 304 or Type <br /> Stainless Steel or 316 <br /> Type 316 Stainless <br /> Steel for Structural <br /> Applications <br /> 4.6 Repair Work <br /> Repair work, excepting repair of corroded items,shall be completed after demolition of the existing <br /> roof structure and installation of the new roof system are completed. <br /> 4.6.1 Wash Down Piping <br /> The partial roof collapse damaged the newly installed wash down system piping in a couple of <br /> locations. Design-Builder will need to repair as part of this project. <br /> City of Everett January 29,2020 <br /> Water Filtration Plant East Clearwell Roof Replacement DB Project Supplementary Conditions Page 9 <br />