06 A to F-Depot Project Manual - Laserfiche WebLink

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Paris Santa Fe-Frisco Depot Rehabilitation © K[YSTONE ARCHITECTS luly 10, 2001 95 percent relative compaction as determined by ASTM D155778 for a depth of at least six inches. B. Fill shall be laid in loose lifts eight inches in thickness, moisture conditioned to within three percent of the optimum, and uniformly compacted to a minimum of 95 percent relative compaction as determined by the above-referenced test. Fills and backfills within pavement areas shall be compacted to at least 95 percent of maximum dry density within 2 feet of finished subgrade. C. Filling operations shall be performed so as to bring the walkway finished surfaces to the correct slopes as indicated on the Drawings. D. In general, fill and back:f'fll operations shall be carried out as follows: 1. Basement Foundation backfill shall be placed and compacted as specified or as directed by Structural Engineer. 2. Walkway backfill shall be placed and compacted as specified or as directed by S~'ueturai Engineer. 3. Trenching backfills shall be placed and compacted in accordance with the grading recommendations utilizing the appropriate mechanical compactor around and above the pipes. Jetting and ponding of the backfill shall not be allowed. E. The subgrade below the new walkways and ramps shall be maintained in a moist condition prior to slab placement to minimize any potential swelling or the subgrade soils. 3.06 INSUFFICIENT EARTH MATERIALS A. Contractor(s) shall import necessary materials without any additional cost to the Owner for smactural fill or yard fill to complete grading work. Such imported materials shall be subject to approval of Engineer and shall meet requirements as specified for each category of materials. 3.07 TOPSOIL AND FINISH GRADING A. Provision of a uniform 6 inch layer of imported topsoil around building including all areas other than AC paved or concrete slab areas shall be NIC. Topsoil shall be lightly compacted to provide a usable lawn or garden. 3.08 FILL TESTING A. All yard and structural fill, road subgrade and pavement section shall be tested by an independent testing agency and all test results submitted to the Engineer for approval. All cost of testing shall be borne by the Contractor(s). Testing shall be made throughout the area for each 6-inch compacted layer. All test results must be approved before the Contractor(s)can proceed with placing of topsoil, cushion fill, base course or select borrow sub-base course. * * END OF SECTION * * Section 02100 Page 4-4