709 N BROADWAY 2016-01-01 MF Import

In summary, the 10.0 foot high vr.rtical walt (Case A& B) that is part of the sand shed will require the following configuration for the entire length of the wall: • Bottom row of blocks: lst r�lock parallel to wall, 2nd block perpendicular to wall (total depth = 7.5 feet). • Second row of blocks: Blocks placed perpendicular to wall (total depth = 5.0 feet). • Third row of blocks: Block , placed parallel to wall (total depth = 2.5 feet). • Forth row of blocks: Blocks placed parallel to wall (total depth = 2.5 feet). As we discussed on the phone, we checked the wall design between the sand shed columns (Case B) to see if we could narrow the depth of the wall. The design calculations indicated that there was not an adequate factor of safety with respect to bearing capacity to narrow the depth of the wall in between the columns. The third case that you requested us to look at was for a 7.5 foot high vertical �vall with sand backfill behind it. This wall can be built with all three rows of blocks perpendicular to the wall. We appreciate this opportunity to be of service to you and have enjoyed working �.vith you. We are available on a limited basis during construction to provide ir►spection services. Please call us if you have an; questions or if we can be of further service. Sincerely, Geotechnica/ and Roland D. IvZaynard,l3: Geotechnical Engineer cc: Peter Blundell, M.E. Services, Inc. ,aV n• Mq tp�%' oF w�sy�% � ��`� c ti y r+� '� e. '�7452 _ [%PIR[S