2719 W Huckleberry Rd - Plan - Laserfiche WebLink

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2717 Huckleberry Rd, Unit #2 Santa Ana, CA 92706 pipes should be embedded and shaded with about 6 inchs thick layer of imported clean sand (for protection of the pipes) prior to backfilling with native soils. As an alternative, where drain pipe or utility lines may be damaged by mechanical compaction equipment, imported clean sand having a sand equivalent (SE) value of 30 or greater may be utilized. The clean sand backfill materials should be watered to achieve near optimum moisture conditions and then tamped into place. No specific relative compaction will be required for clean sand backfill; However, observation, probing, and if deemed necessary, testing should be performed by a representative of the project geotechnical consultant to verify an adequate degree of compaction of clean sand backfill. If imported clean sand is to be used for backfill of exterior trenches, it is recommended that the upper 12 inches of trench backfill materials be consisted of properly compacted on-site soil materials. This is to reduce the potential substantial infiltration of irrigation and rainwater into granular trench backfill materials. Where an utility trench is proposed near a building footing, the bottom of the trench should not extend below a 1:1 (horizontal to vertical) plane projected downward from the bottom edge of the adjacent footing. Where this condition occurs, the adjacent footing should be deepened or the utility line should be installed first and the trench backfilled and compacted prior to constructing the footing. Cooperation With Project Civil/Structural Design Engineer And Other Consultants And Geotechnical Review of Plans Geotechnical International will cooperate with the civil/structural design engineer and other consultants of record for this project and geotechnically review the grading plan and foundation plan and other plans, if any (to be used for this project) to ensure that our recommendations have been properly interpreted and incorporated into the design and preparation of the plans. After acceptance of the plans, we will sign and stamp on the plans. Geotechnical Observation and Testing During Construction We recommend that a qualified geotechnical consultant be retained to provide geotechnical engineering services, including geotechnical observation/testing, during the construction phase of the project. This is to verify the compliance with the design, specifications and/or recommendations, and to allow design changes in the event that subsurface conditions differ from those anticipated. Geotechnical observation/testing can be performed at the following stages:  During ANY grading operations, including excavation, removal, filling and backfilling, etc.  After excavation for building footings to verify the adequacy of underlying materials.  After pre-saturation of slab subgrade earth materials, if any, prior to pouring concrete.  During backfill of drainage and utility line trenches, if any, to verify proper compaction and materials used.  After compaction of subgrade soils and or aggregate base for new exterior slabs and or driveway, if any. Page 11 of 22