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Nichols Consulting Engineers, thtd. <br />Civil, Pavement i Materials Engineering <br />December 18, 2002 <br />Mr. Steven S. Gallup <br />City of Eugene <br />Department of Public Works, Engineering <br />244 East Broadway <br />Eugene, OR 97401 <br />Subject: Pavement Design Services for the City of Eugene on Garden Way <br />Dear Mr. Gallup: <br />Nichols Consulting Engineers (NCE) proposes to perform pavement design services for the City of <br />Eugene in compliance with Contract #2003-00218 Pavement Design -Pool Contract fee schedule on <br />Garden Way. <br />NCE proposes to provide the following services: <br />Task 1-Perform Falling Weight Deflectometer (FWD) Analysis, Coring and Soil Testing <br />NCE will perform deflection testing on Garden Way using NCE's Dynatest 8000 Falling Weight <br />Deflectometer (FWD) to evaluate the structural capacity of the pavement. A 9,000-pound load will be <br />applied to simulate the effects of a dual fire truckload (standard 18-kip axle). Briefly, all travel lanes will <br />be tested at generally100-foot intervals, or other spacing as needed. When pavement conditions are <br />highly variable more tests are needed, when more uniform fewer tests are needed. <br />In order to perform pavement reconstruction and overlay designs, it is necessary to determine the <br />thickness and material types in the existing pavement structure. NCE proposes to perform coring on <br />Garden Way. Four-inch diameter cores will be removed at locations to be determined by NCE, asphalt <br />concrete thicknesses and base will be measured, and the core holes will be patched. Patching will consist <br />of 3-sack concrete slurry backfill with a 3-inch minimum asphaltic concrete cap. Soil testing will also be <br />performed on Garden Way. <br />NCE will be responsible for all traffic control necessary to perform FWD testing and coring. Warning <br />signs will be placed at the beginning and end of each section, and arrow boards and flag-men will be <br />utilized as necessary. NCE proposes to perform the FWD testing during the week of December 16`x. <br />Total Cost for Task: 54,673 <br />108 Broadway, Saite 110 <br />tacama, WA 98401 <br />253.383.1312 <br />253.512.5714 fax <br />