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, <br /> " ( �_., <br /> Ground ���5152n0Avenue NE <br /> Redmond, WA 98052 <br /> Phone (�25)376-017� <br /> Support Fax (425)376-0277 <br /> PLLC Www,yroundsupport.mm <br /> 802oZ-o,� <br /> February 26, 2002 Our ref: 02-17 <br /> Malcolm Drilling Company,Inc. <br /> 7808 South 207�'Court, <br /> Kent, WA 98032 <br /> AITENTION: AI Rasband <br /> RE: TF.MPORARY ANCHORED SOLDIER PILE SHORING WALL, EVERE7T <br /> REGIONAL SPECIAL EVENTS CENTER,EVERETT, WASHINGTON <br /> Dear Al: <br /> Ground Support is pteased to submit our design plans and calculations for a temporary anchored <br /> soldier pile shoring wall to support approximately 110 linear feet of excavation for the Everett <br /> Regional Special Events Cenier, Everett, Washington. In general, it is planned to use temporary <br /> conshvction slopes around the excavation. Howeva,over a relative]y short lrngth along thewest <br /> side of the excavation, there is insufficient room to lay back the slope because of a reyuiremrnt to <br /> protect a 6-inch water line and an underground power duct. This report addresses the shoring <br /> design at this location. The project background, subsurface �onditions and design approach are <br /> described in lhe following sections. <br /> 1. PROJECT BACKGROUND <br /> We have reviewed, and based our design on,the following project documents: <br /> • "Geotechniczl Report, Everett Regional Specia] Evrnu Center, Everett, Washington", <br /> prepazed by Shannon and Wilson,Inc.,dated January 15,2002. <br /> • Untitled Drawing Set by Skilling Ward Magnussen and Bazkshire, undated. <br /> Based on a review of the above information,our understanding of the project is described below. <br /> The project is concemed with the design and installation of a temporary anchored soldier pile <br /> shoring wall for lhe support of approximately 110 tineaz feet of excavaHon for the above- <br /> referenced project. The project, located in downtown Everett, will generally uHliu temporary <br /> 1 H:1 V construction slopes to achieve the base of the excavation at approximate Elevarion 80 fat. <br /> Along a portion of Oakes Avenue to the west, where buried water and powtt utilities must be <br /> protected, there is insufficient room to utilize construction slopes alone, At this location,a 1H:1 V <br /> INNOVATIVE AND COST EFFBCTI VE SXCAVpT10N SUPPORT DESIGN �8 <br /> SOIL NAIL WALLS-ANCHORED PILE WALLS-VENIS�SYSTEM-MICROPILE WAL[S <br />