1600 121ST ST SE 2016-01-01 MF Import

� � � . �[�I�� need to be driven to an apparent capacity, in excess of the allowable capacity, to account for the effects of the anticipated downdrag. Recommendations regarding pile installatians should be determined once building design and loads are finalized. A representative of Golder Associates, Inc. should observe all pile installations to monitor driving resistance and verify that the proper load capacity is attained. The exact required depth of pile penetration must be determined at the tlme of installatian. Me estimate most piles w111 be driven to depths an the order of three to ten feet into the Glacial Till before reaching refusal. The total length of pile w111 vary according to the depth of soft soil at each locatian and the density of the underlying Glacial Till. Since the completed piles are below ground and the depth to the bearing layer is variable, judgement and experience must be used as a basis for determining the required depth and acceptability of a particular pile. We recommend that the installation of several representative piles be observAd by a representative of aur firm who can callect and interpret the installation data and observe the contractor's operations. • Ertimated Pile Settlement: - Total Settlement - Differential Settlement - Time Rate 5.3 Flaor Slabs 1/2 inch 1/4 inch Approximately construction 90 percent during The native Glacial Till (Unit 4) ar properly compacted structural fill, be suitable to support slab-on-grade floors. Floor slabs should not be founded on or above the existing Fill (Unit 1), Peat (Unit 2), or Clayey (Unit 3). We recommende6 all slab-on-grade floars be underlain by a mat clean, free-draining granular material at least four-inches thick. will Silt of At locations where the buildings are founded on piles or footings extended through the Peat, floors should not be designed bs slab-on-yrade due to the soft, settlement-prone nature of the Peat. Instead, raised floors with a crawl space should be utilized. Adjacent grades should be designed ".o drain away fram the structure and the crawl space should be covered with ai impervious moisture barrier. 6. EARTNWORKS Site preparation in most areas will consist of stripping the topsoil, all vegetation, surficial materials, and removing the existing structures and utilities from the areas beneath footings, floor slabs, a�d pavemer,ts. We expect all the site soils can be excavated with conventiunal earth moving equipment. 1f excavations are allowed to become wet, the subr,rades can be easily disturbed and stirred to mud. To avoid excessive site disturbance, the Golder Assoclates