PC-92-25 - Laserfiche WebLink

preparation of the subgrade to receive fill (including keying, benching and construction of subsurface drains under fill placed on slopes), acceptable fill material, and fill placement requirements (including method of placement and degree of fill compaction). Existing fill on the site which was not properly placed or compacted should be removed and replaced with engineered fill. All fill placed on site should be engineered fill, that is, fill placed in accordance with the recommendations of a geotechnical engineer. 70. (MM 9.D.2) The grading for the subdivision roadways and infrastructure should be performed as recommended by the geotechnical and civil engineers. The developer's engineers should provide continuous inspection when subdivision grading operations are being performed in order to ensure the grading work is being performed properly. 71. (MM 9.D.3) All fill placed during individual lot grading should be placed in such a manner as to minimize differential settlement. A subsurface investigation by a geotechnical engineer should be performed on each lot before lot grading begins. The geotechnical engineer should provide detailed grading and foundation recommendations for each lot and house. The individual lot owner's geotechnical and civil engineer should provide detailed recommendations and plans for acceptable cut and fill slope gradients, stripping, preparation of the subgrade to receive fill (including keying, benching and construction of subsurface drains under fill placed on slopes), acceptable fill material, and fill placement requirements (including method of placement and degree of fill compaction). The geotechnical recommendations for each lot should be compatible with the overall geotechnical design for the entire subdivision. 72. (MM 9.D.4) The individual lot grading should be performed as recommended by the geotechnical and civil engineers. The lot owner's engineers should provide continuous inspection when lot grading is being performed to ensure the grading work is being performed properly. 73. (MM 9.E.1) A geotechnical investigation should be performed on each lot. The expansion potential of the native materials and fill on the lot should be evaluated by the geotechnical engineer. The geotechnical engineer should provide foundation design, soil preparation and grading recommendations which are appropriate for on-site soil and geologic conditions. The corrosivity of the native soils and fill should also be evaluated by the geotechnical engineer. All steel pipe should be coated or have cathodic protection.