728Compressive Load Transmitting Devices

728-01 Rubber Impregnated Woven Cotton-Polyester Fabric

SCOPE. This specification covers the material requirements, tests and basis of acceptance for rubber impregnated, woven, cotton-polyester fabric. MATERIAL REQUIREMENTS. Rubber impregnated woven cotton-polyester fabric shall be composed of multiple layers of prestressed cotton-polyester duck with a minimum mass of 8 oz/sy, impregnated and bound with high quality rubber compound, containing rot and mildew inhibitors and anti-oxidants. The duck warp count shall be 50±1 threads per inch and the filling count shall be 40±2 threads per inch. Each thread shall contain 2 yarns. The material shall contain 64 plies per inch. The number of piles in the furnished material shall be such as to produce the specified thickness. TEST. This material shall exhibit a maximum load deflection of 10% at 1000 psi when tested in accordance with MIL-C-882. BASIS OF ACCEPTANCE. This material will be accepted on the basis of the manufacturer's certification of compliance with these specification requirements.

728-02 Rubber Impregnated Random Fiber Pad

SCOPE. This specification covers the material requirements, tests and basis of acceptance for rubber impregnated random fiber pads. MATERIAL REQUIREMENTS. Rubber impregnated random fiber pad shall be composed of a high quality elastomer with a random distribution of non-asbestos fibers. BASIS OF ACCEPTANCE. Rubber impregnated random fiber pad shall be accepted under an Approved List.

728-03 Plain Rubber Pad

SCOPE. This specification covers the material requirements, tests and basis of acceptance for plain rubber pads. MATERIAL REQUIREMENTS. Plain rubber vertical load transmitting devices shall contain only polychloroprene as the raw elastomer polymer. The physical properties of the cured material shall comply with ASTM D2000 Line Call Out M2BC514A14B34. The rubber pads shall be cast in a mold under pressure and heat, or may be furnished to Department projects if they have been carefully cut from a larger piece of fully molded material. Shape factors of each device. i.e., net load area divided by the area free to bulge, must exceed twelve (12). TEST. One plain rubber pad sample per size shall be submitted by the Engineer to the Materials Bureau for destructive test. BASIS OF ACCEPTANCE. The presence of the appropriate form, validated by the Materials Bureau, shall constitute evidence of acceptability at the job site for plain rubber pads.

728-04 Sheet Lead

728-05 (Vacant)

NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) January 1, 2026 VOLUME 4 SCOPE. This specification covers the material requirements and basis of acceptance for sheet lead. MATERIAL REQUIREMENTS. Sheet lead shall be lead plate of nominal 1/8 inch thickness, meeting the standard specification for Pig Lead, ASTM B29. BASIS OF ACCEPTANCE. This material shall be accepted on the basis of a manufacturer's certification of compliance with this specification.

728-05 (Vacant)

728-06 Sheet Gasket (Treated Both Sides)

SCOPE. This specification covers the material requirements for sheet gasket, treated both sides with a parting agent to prevent adhesion to working surfaces. This material is used as a bond breaker and sliding surface in bridge construction. MATERIAL REQUIREMENTS. The sheet gasket shall have a nominal 1/16 inch thickness and shall be treated on both sides with a parting agent. The material shall meet the following requirements: TABLE 728-06-1 SHEET GASKET REQUIREMENTS Property Test Method Requirement Water absorption, % Prepare 3 samples (2x2 inches, 1/16±1/32 inch thick). Record initial weight of the specimen. Immerse the samples in a distilled water tank for 24 hrs at room temperature. Take out the samples and dry it with a dry cloth, then record final weight. Use the difference in weight to calculate the water absorption %. 25.0 Maximum Coefficient of static friction ASTM D1894 0.36 Maximum Coefficient of kinetic friction ASTM D1894 0.24 Maximum Tensile strength, psi in the weakest direction ASTM F152, Type 2 1200 Minimum BASIS OF ACCEPTANCE. Sheet Gaskets will be accepted on the basis of the product appearing on the Department's Approved List.

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