2011-226B.1 - Laserfiche WebLink

Home Browse Search

560-9 . 8 Thickness of Coats : Apply coatings to the thickness as identified in the manufacturer ' s product data sheet. After application of each coat, thoroughly inspect the surfaces and measure the dry film thickness (DFT) in accordance with SSPC -PA 2 . When the DFT is deficient or excessive , correct in accordance with the coating manufacturer ' s recommendations and retest the area. 560-9 .9 Coating Drying, and Curing : Apply coatings within the time specified by the coating manufacturer ' s product data sheet for drying and recoating . Test the coating for proper cure before handling and shipping . Test for cure in accordance with the manufacturer ' s recommended method. Meet the requirements of ASTM D 4752 for inorganic zinc primers or F ASTM D5402 for organic zinc primers when the manufacturer ' s technical data sheet does not state a specified cure test. Obtain the acceptance criteria from the coating manufacturer and report the results to the Engineer. Prior to assembling bolted connections , test and verify that the primer coating on the faying surfaces has cured to a resistance rating of 5 in accordance with ASTM D 4752 , ASTM D 5402 , or the coating manufacturer ' s requirements . If cure testing is performed per the coating manufacturer ' s requirements , submit the test results to the Engineer for approval prior to assembling the bolted connection . 560-9 . 10 Coating Finish : Apply each coat free of runs , sags , blisters , bubbles, and mud cracking; variations in color, gloss , or texture ; holidays ; excessive film buildup ; foreign contaminants ; orange peeling ; and overspray. 560- 10 Touchup and Repair. Clean and coat all welds , rivets , bolts , and all damaged or defective coating and rusted areas in accordance with 560 -7 and 560- 9 . Upon approval by the Engineer, aluminum mastic may be used in accordance with the manufacturer ' s recommendations . Aluminum mastic must contain aluminum pigment and minimum 80% volume solids . 560- 11 Coal Tar-Epoxy Coating of Permanent Bulkhead Sheet Piles and H Piles . 56041 . 1 Surface Preparation : Prepare the substrate in accordance with 560-7 . Provide a depth of anchor profile in accordance with the manufacturer ' s product data sheet, but in no case less than 2. 5 mils . Re-blast piles not coated during the same shift or if the surface to be coated no longer meets the requirements SSPC - SP 10 . 560- 11 . 2 Application of Coating : Unless otherwise shown in the Contract Documents , apply the inorganic zinc and coal tar-epoxy coatings to all sides of H piles and the exposed side of sheet and pipe piles from the top of the piles to a depth of five feet below the lower of the design ground surface or the design scour depth . Apply the inorganic zinc in accordance with this Section . Apply the coal tar-epoxy in accordance with the following specific requirements : ( 1 ) Apply the coal tar- epoxy system in two coats . The time interval between the first coat and the second coat will be in strict accordance with the coating manufacturer ' s published specifications . Apply the first coat to yield a dry film thickness of 8 to 10 mils . Apply the second coat to attain a total dry film thickness of the two coats between 16 and 20 mils . For sheet piles , give the inside portion of the interlock claw and the interlock ball a single coat that will yield a dry film thickness of 2 to 4 mils . Build up and puddling of the coating in these areas is not permitted . (2) Ensure that no portion of the coating is less than the specified minimum film thicknesses . The total minimum film thickness for any combination of coats will be the sum total of the averages of the specified thickness range of the individual coats . - 165 - FPID ( S ) : 423186 - 1 - 58 - 01