1607 EDGEMOOR LN 2016-01-01 MF Import

Mr. Mel Konsmo E-7548 January 14, 1997 Page 2 Geogrid Length - feet Wall Height Number of Geogrid Layers (from back of wall) s 6 3 5 6 1 5 7 ' - Geogrid should consist of Tensar UX1400, or equal 2 - Geogrid should consist of Tensar UX1500, or equal This design includes a 100 pound per square foot (psf) surcharge for traffic loading. The Keystone Blocks, geogrids, drainage a��d wall backfill should be placed in strict accordance with the manufacturer's recommendations. The wall backfill may consist of the on-site poorly graded sand with silt soil. The backfill should be compacted to at ieast 90 percent maximum dry density in accordance with ASTM D-1557, Modified Proctor. Due to the relatively steep slope below the proposed wall alignment, in our opinion, the wall should be founded on a concrete footing rather than the typical crushed rock layer. The footing should be founded at least one foot into competent native soils. A representative from our firm should be on-site during the excavation for the wall footing to verify competent bearing soils are present. We should also be on-site to observe and test the compaction of the wali backfill. Grades above the �+all should provide for positive drainage away from the wail. In no case should surface water be allowed to flow uncontrolled over the top of the wall. Eenh Cnnuknta, Ine.