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CITY OF EVERETT SPECIAL PROVISIONS <br /> 10. A counterbalance mechanism may be necessary to effectively work against <br /> the gravitational forces acting on the hatches, as some hatches may be <br /> located on sloping grades. Refer to plans for hatch locations and orientation <br /> to grades. <br /> Access Hatch Schedule: <br /> xxM>=,r == ;; <br /> . . =Access Hatch <br /> Structure. = Hatch°>T e <br /> rating <br /> �,. ..G <br /> R39 Manhole Single Leaf, Traffic Duty HS-30 Not Applicable <br /> 7-10.3 Construction Requirements I <br /> 7-10.3(1) Preparation <br /> Coordinate hatch with concrete placement and slide gate placement. <br /> If appropriate, hatch design and construction requirements shall be coordinated with <br /> precast structure suppliers. The Contractor's attention is directed to the requirements <br /> in Section 7-05. If access ladders are to be provided, hatches shall be coordinated <br /> with ladder location and requirements for entry. <br /> 7-10.3(2) Installation <br /> Install in accordance with manufacturer's instructions and recommendations and as ' <br /> shown on the drawings. <br /> In paved areas, unless otherwise shown on the drawings or directed by the Engineer, <br /> hatches shall be flush with finish grade. <br /> 7-10.4 Measurement <br /> Bid items of Work completed pursuant to the Contract Documents will be measured as <br /> described in Division B — Bid Item Descriptions of these Special Provisions and Section 1- <br /> 09 MEASUREMENT AND PAYMENT of the Standard Specifications. <br /> 7-10.5 Payment <br /> Payment for bid items of Work completed pursuant to the Contract Documents will be as <br /> described in Division B — Bid Item Descriptions of these Special Provisions and Section 1- <br /> 09 MEASUREMENT AND PAYMENT of the Standard Specifications. <br /> 7-11 Fiber Reinforced Plastic (FRP) Grating and Structural Shapes , <br /> 7-11.1 Description <br /> This section specifies requirements for vault and manhole landings. I <br /> Design, furnish, fabricate, and install all fiberglass reinforced plastic (FRP) grating and <br /> structural shapes being used at vault and manhole landings, including connection <br /> clips, hardware, and incidentals necessary to produce a complete installation as shown I <br /> on the Contract Drawings and as specified herein, and in accordance with the <br /> requirements of the Contract Documents. <br /> 7-11.1(1) Quality Assurance I <br /> Single source responsibility: Contractor shall obtain grating, structural shapes, and <br /> accessories from one manufacturer. <br /> Manufacturer shall offer a 3 year limited warranty on all FRP products against defects I <br /> in materials and workmanship. <br /> Manufacturer shall be certified to the ISO 9001-2000 standard. <br /> Manufacturer shall provide proof, via independent testing less than six months old, that <br /> materials proposed as a solution do not contain heavy metals in amounts greater than <br /> that allowed by current EPA requirements. <br /> Sewer Regulators R4 and Division 7—STORM, SEWER,WATER May 2017 <br /> R39 Modifications <br /> WO No.—UP3633 SP-170 <br />