5306 W McFadden Ave - Plan - Laserfiche WebLink

Home Browse Search

St. Barbara Catholic School Project No.: D-6289-01 Trash Area & Fire Lane 7.0 CITY OF SANTA ANA Planning and Building Agency may, lS. Approved FOR PERMIT ISSUANCE 4 1 8 At the parking and driveway areas, the top 12 inches of subgrade shou TR excavated; ate: moisture conditioned and recompacted immediately prior to placing the rock base and asphalt concrete. Rock -base material should be class II aggregate base and to be compacted to 95 percent minimum. Pavement Grading Recommendations All section changes should be properly transitioned. If adverse conditions are encountered during the preparation of subgrade materials, special construction methods may need to be employed. A Geotechnical Solutions, Inc. (GSI) representative should be present for the preparation of subgrade, aggregate base, and asphaltic concrete. Subgrade Within driveway and parking areas, all surficial deposits of loose soil material should be removed and excavated 12 inches below the base and recompacted as recommended. The bottom is further scarified to a depth of at least 6 inches, moisture conditioned as necessary and compacted to 90 percent of the maximum laboratory density as determined by ASTM Test Method D-1557. Deleterious material, excessively wet or dry pockets, concentrated zones of oversized rock fragments, and any other unsuitable materials encountered during grading should be removed. The compacted fill material should then be brought to the elevation of the proposed subgrade for the pavement. The subgrade should be proof rolled in order to ensure a uniform, finn, and unyielding surface. All grading and fill placement should be observed by the project soils engineer and/or his representative. Aggregate Base Compaction tests are required for the recommended base section. The minimum relative compaction required will be 95 percent of the laboratory maximum density as determined 22