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CITY OF EVERETT SPECIAL PROVISIONS <br /> Pultruded structural shapes are to have the minimum longitudinal mechanical I <br /> properties listed below: <br /> Property ASTM Method Value Units <br /> Tensile Strength D-638 30,000 (206) psi (MPa) <br /> Tensile Modulus D-638 2.5 x 106 (17.2) psi (GPa) <br /> Flexural Strength D-790 30,000 (206) psi (MPa) I <br /> Flexural Modulus D-790 1.8 x 106 (12.4) psi (GPa) <br /> Flexural Modulus (Full Section) N/A 2.8 x 106 (19.3) psi (GPa) <br /> Short Beam Shear(Transverse) D-2344 4,500 (31) psi (MPa) <br /> Shear Modulus (Transverse) N/A 4.5 x 105 (3.1) psi (GPa) <br /> Coefficient of Thermal Expansion D-696 4.4 x 10-6 in/in/°F <br /> (8.0 x 10 -6) (cm/cm/°C) <br /> Flame Spread E-84 25 or less N/A <br /> FABRICATION I <br /> A. Measurements: Structural Shapes supplied shall meet the minimum <br /> dimensional requirements as shown or specified. The Contractor shall 1 <br /> provide and/or verify measurements in field for work fabricated to fit field <br /> conditions as required by manufacturer to complete the work. Determine <br /> correct size and locations of required holes or coping from field dimensions <br /> before structural shape fabrication. <br /> B. Sealing: All shop fabricated cuts or drilling shall be coated with vinyl ester <br /> resin to provide maximum corrosion resistance. All field fabricated cuts or <br /> drilling shall be coated similarly by the contractor in accordance with the <br /> manufacturer's instructions. <br /> C. Hardware: Type 316 stainless steel bolts shall be provided. <br /> 7-11.2(3) Molded Grating <br /> A. All FRP grating furnished shall be composed of fiberglass reinforcement and <br /> resin in qualities, quantities, properties, arrangements and dimensions as <br /> necessary to meet the design requirements and dimensions as specified in <br /> the Contract Documents. <br /> B. Fiberglass reinforcement shall be continuous roving in sufficient quantities as <br /> needed by the application and/or physical properties required. <br /> C. Resin shall be with chemical formulations as necessary to provide the <br /> corrosion resistance, strength and other physical properties as required. <br /> D. All finished surfaces of FRP items and fabrications shall be smooth, <br /> resin-rich, free of voids and without dry spots, cracks, crazes or unreinforced <br /> areas. All glass fibers shall be well covered with resin to protect against their <br /> exposure due to wear or weathering. ' <br /> E. All grating products shall have a tested flame spread rating of 25 or less per <br /> ASTM E-84 Tunnel Test. Gratings shall also have tested burn time of less <br /> than 30 seconds and an extent of burn rate of less than or equal to 10 <br /> millimeters per ASTM D635. 111 <br /> F. All mechanical grating clips shall be manufactured of Type 316 stainless <br /> steel. <br /> MOLDED GRATING REQUIREMENTS <br /> A. Manufacture: Grating shall be of a one piece molded construction with tops <br /> and bottoms of bearing bars and cross bars in the same plane. Grating shall I <br /> Sewer Regulators R4 and Division 7—STORM, SEWER,WATER May 2017 <br /> R39 Modifications <br /> WO No.—UP3633 SP-172 <br />