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STORAGE AND HANDLING <br /> Prevent damage to geofoam blocks during delivery, storage, and construction. Protect <br /> geofoam blocks from petroleum products, organic solvents, ultraviolet light, and <br /> mechanical damage. Do not operate construction equipment or vehicles directly on the <br /> geofoam blocks. EPS geofoam is combustible. Do not expose it to open flame or any <br /> source of ignition. EPS geofoam is a lightweight material. Prevent blocks from becoming <br /> dislodged or displaced due to wind by providing ballasting or using guying techniques to <br /> stockpiled blocks and while under construction. Cover geofoam blocks with an opaque <br /> material if they are expected to be exposed to sunlight for more than 1 month. Contain <br /> waste and scrap sections of block on the job site and dispose of appropriately. <br /> GEOFOAM JOINT CONNECTIONS <br /> Prevent sliding of geofoam blocks during construction by placing fasteners or adhesive <br /> between the horizontal joints. <br /> Do not use geofoam blocks that are less than 6 inches thick. Rotate and offset blocks by <br /> a minimum of 6 inches in any direction in alternate layers to avoid continuous joints in <br /> the block embankment. <br /> For fasteners, use galvanized steel multi-barbed fasteners with a holding strength of at <br /> least 60 pounds. Install a minimum of 2 connectors for each 4-foot x 8-foot joint surface <br /> area of block, or as recommended by the manufacturer. Press the fastener firmly into the <br /> geofoam block until the fastener is flush with the surface. Position the next block as <br /> specified and seat firmly on the fasteners before placing subsequent blocks. <br /> For adhesives, use a urethane adhesive recommended by the EPS geofoam block <br /> manufacturer. Ensure that the adhesive is suitable for use with expanded polystyrene <br /> before proceeding with full application. Place a minimum of two 8-foot long beads of <br /> adhesive for each 4-foot x 8-foot joint surface area of block, or as recommended by the <br /> manufacturer. <br /> GEOFOAM INSTALLATION <br /> Place the geofoam into the enclosed area according to the approved plan and <br /> manufacturer's recommendations. <br /> Field cut the geofoam blocks using hot wire method. Do not saw, rip or tear blocks to fit. <br /> Select equipment and procedures for placing structural backfill behind and cover <br /> material over the geofoam embankment that will not damage the geofoam. Construction <br /> equipment and vehicles are not allowed directly on the geofoam blocks. Replace <br /> geofoam blocks that have been damaged by the Contractor's equipment or operations. <br /> Do not drill holes or make modifications to the blocks to facilitate shipping or handling. <br /> Provide a level surface free of depressions on the top of the geofoam embankment. <br /> GEOMEMBRANE <br /> Place the geomembrane so that it seals the surface of the geofoam embankment. . Glue <br /> or weld seams of the geomembrane to prevent leakage. Use piles of cover material or <br /> sandbags to hold the geomembrane in place. Do not drive equipment directly on the <br /> geomembrane. Place the sand layer within the same work shift that the geomembrane is <br /> installed. Place and compact backfill according to the approved plan <br /> Swift Green Line—Corridor Stations Special Provisions SP90 <br /> May 2017 <br />