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Nichols Consulting Engineers, Chtd. <br /> <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 the 3`~/4ab Connector <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 A~2003-00218 Pavement Design -Pool Contract fee schedule on the <br /> 3'~/4`s Connector. <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 the 3'~/4`~ Connector using NCE's Dynatest 8000 Falling <br /> Weight Deflectometer (FWD) to evaluate the structural capacity of the pavement. A 9,000-pound load <br /> will be applied to simulate the effects of a dual fire truckload (standard 18-kip rile). Briefly, all travel <br /> lanes will be tested at generally100-foot intervals, or other spacing as needed. When pavement <br /> conditions are highly variable more tesu 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 /> the 3'~/4`~ Connector. Four-inch diameter cores will be removed at locations to be determined by NCE, <br /> asphalt concrete thicknesses and base will be measured, and the core holes will be patched. Patching <br /> will consist of 3-sack concrete slurry backfill with a 3-inch minimum asphaltic concrete cap. Soil testing <br /> will also be performed on 3'~/4`~ Connector. <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`s. <br /> Total Cost for Task: 54,122 <br /> 708 Broadway, Suite 110 <br /> Tacoma, WA 98402 <br /> 153.383.2322 <br /> 253.572.5114 (ax <br /> <br />