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FP-96 English Version - Eastern Federal Lands Highway Division

FP-96 English Version - Eastern Federal Lands Highway Division

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Section 717717.08 Sheet Lead. Furnish common desilverized lead conforming to ASTMB 29. Furnish sheets in a uniform 0.125±0.030 inch thickness free fromcracks, seams, slivers, scale, and other defects.717.09 Steel Grid Floors. Conform to AASHTO M 270 grade 36 or 50W.AASHTO M 270 grade 36 steel shall have a minimum copper content of 0.2percent unless galvanized. Galvanize steel grid floors unless painting isspecified.717.10 Elastomeric Bearing Pads. Conform to AASHTO M 251.717.11 Tetrafluoroethylene (TFE) Surfaces for Bearings.(a) TFE resin. Furnish virgin TFE resin material conforming to ASTMD 1457 and the following:(1) Specific gravity 2.13 to 2.19(2) Melting point 623 bF ±2 bF(b) Filler material. Furnish milled glass fibers, carbon, or other approvedinert material.(c) Adhesive material. Furnish epoxy resin adhesive conforming to FSSMMM-A-134, FEP film or an approved equal.(d) Unfilled TFE sheet. Furnish unfilled TFE sheet made from TFE resin.Conform to the following:(1) Tensile strength, ASTM D 1457 2,800 psi min.(2) Elongation, ASTM D 1457 200% min.(e) Filled TFE sheet. Furnish filled TFE sheet made from TFE resin uniformlyblended with filler material. For filled TFE sheets containing glassfibers or carbon, conform to Table 717-1.(f) Fabric containing TFE fibers. Furnish fabric made from orientalmultifilament TFE fluorocarbon and other fibers. Use TFE fibers, conformto the following:(1) Tensile strength, ASTM D 2256 24,000 psi min.(2) Elongation, ASTM D 2256 75% min.745

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