3333 NASSAU ST 2024-08-07 - Laserfiche WebLink

October 3, 2016 Single-Family Residence L&A Job No. 16-124 Page 11 compacted to a non-yielding state with a mechanical compactor and proof-rolled with a piece of heavy earthwork equipment prior to driveway construction. EXCAVATION AND FILL SLOPES Under no circumstance should excavated slopes be steeper than the limits specified by local, state and federal safety regulations if workers have to perform construction work in excavated areas. Unsupported temporary cuts greater than 4 feet in height should be no steeper than 1-1/21-1:1V in topsoil, no steeper than 1H:1V in weathered and advance outwash soils, and no steeper than 1/2H:1V in very-dense glacial till and very-stiff to hard transitional beds soils if the overall depth of excavation does not exceed 15 feet. Otherwise, cut in glacial till and transitional beds soils should be no steeper than l H:I V. Permanent cut banks should be no steeper than 2-1/4H:1V in topsoil and weathered soil, and no steeper than 2H:1V in advance outwash soil, and no steeper than 1-1/2H:1V in glacial till and transitional beds soils. The soil units and stability of cut slopes should be observed and verified by a geotechnical engineer during excavation. Permanent fill embankments required to support structural or traffic load should be constructed with compacted structural fill placed over undisturbed, proof-rolled, firm, native soils after the surficial unsuitable soils are completely stripped. The slope of permanent fill embankments should be no steeper than 2-1/4H:1V. Upon completion, the sloping face of permanent fill embankments should be thoroughly compacted to a non- yielding state with a hoe-pack. Permanent fill embankments constructed over ground of 15% or more should be structurally supported laterally. LIU & ASSOCIATES, INC. )1.0