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6. Sump Pump Basin: Structural foam basin with sealed cover assembly for pipe and wiring penetrations: <br /> a. Size: Minimum 18 inches diameter x depth required for drainage systems <br /> b. Locate at Lower Level floor slab as directed by the Architect <br /> c. Connect to interior foundation drainage piping through sidewall knockouts <br /> d. Provision and installation of pump and piping to exterior outlet is work of Section 15410 PLUMBING. <br /> E. Properly compact subgrade and aggregate bases. <br /> F. Below slabs-on-grade containing in-floor hydronic heating systems, install two inch (2") rigid insulation. <br /> G. Loose lay vapor barrier below slabs and carry up perimeter foundation walls minimum two (2") above top of <br /> floor slab. Seal all joints with "8086 Contractor Sheathing Tape" (3M) or equal. Following finishing of floor <br /> slab and ArchitecYs inspection, trim vapor barrierto top of floor slab and seal perimeterjoint with caulk. <br /> H. Apply curing compound/sheeting following finishing. <br /> 633 SPECIFICATIONS <br /> Page 23 <br />