601.3( f) 601.3(g) shown in the Flowable Backfill Detail on the Standard Drawings , and as specified in Section 220.3.
specified in Sections 108.05(c)3.d, 3.g, 3. i, or (c)4 , that will be used to compact the backfill before placing the pipe bedding material. The use of an excavator -mounted hydraulic plate compactor (hoe pac) for proof rolling is not allowed . Compact trench bottom as specified in Section 206.3(b) for the specific material type present. Perform proof rolling only in the presence of the Representative who will assess and approve or disapprove the stability of the area being investigated. In wet areas or unstable areas, the Represent ative may waive this requirement if other stabilization or treatment measures are indicated and/or required. Any areas displaying permanent deformation greater than 1/2 inch ar e unstable. Treat unstable areas by excavating material in the area to a depth of 1 foot. Dry the material and recompact or replace with compacted suitable material of the same type or other material, including Soil, Type 1 granular material, and Type 2 granular material, as specified in Section 206.2(a)1, except having particles no greater than 2 inches in size, as approved by the Representative or as indicated.
shown on the Standard Drawings. Compact with equipment, as specified in Section 108.05(c)4. Do not compact the backfill directly over the crown of the pipe as shown on the Standard Drawings.
on the Standard Drawings, to the finished grade elevation with suitable material or other material, including Soil, Type 1 granular material, and Type 2 granular material, as specified in Section 206.2(a)1, except having particles no greater than 2 inches in size, when the trench is located beyond the roadway footprint, including the shoulders. For pipes constructed in new embankments, backfill to the pavement subgrade elevation (bottom of the pavement subbase layer) with No. 2A Coarse Aggregate when the trench is located within the roadway footprint, including the shoulders, and the distance from the top of pipe elevation to the pavement subgrade elev ation is less than or equal to 4 feet. When the distance is greater than 4 feet, suitable material, or other material, including Soil, Type 1 granular material, and Type 2 granular material, as specified in Section 206.2(a)1, except having particles no gre ater than 2 inches in size, may be placed from the top of the required No. 2A Coarse Aggregate to the pavement subgrade elevation. For rec