Laserfiche WebLink
2026 Pavement Maintenance Overlay Special Provisions <br />PW# 3860 SP - 64 March 5, 2026 <br />1 If the Contracting Agency uses a nuclear density gauge to determine density the test <br />2 procedures FOP for WAQTC TM 8 and WSDOT SOP T 729 will be used on the day the <br />3 mix is placed and prior to opening to traffic. <br />4 <br />5 Roadway cores for density may be obtained by either the Contracting Agency or the <br />6 Contractor in accordance with WSDOT SOP 734. The core diameter shall be 4-inches <br />7 minimum, unless otherwise approved by the Engineer. Roadway cores will be tested by <br />8 the Contracting Agency in accordance with WSDOT FOP for AASHTO T 166. <br />9 <br />10 If the Contract includes the Bid item Roadway Core, the cores shall be obtained by the <br />11 Contractor in the presence of the Engineer on the same day the mix is placed and at <br />12 locations designated by the Engineer. If the Contract does not include the Bid item <br />13 Roadway Core, the Contracting Agency will obtain the cores. <br />14 <br />15 For a lot in progress with a CPF less than 0.75, a new lot will begin at the Contractors <br />16 request after the Engineer is satisfied that material conforming to the Specifications can <br />17 be produced. <br />18 <br />19 HMA mixture accepted by commercial evaluation and HMA constructed under conditions <br />20 other than those listed above shall be compacted on the basis of a test point evaluation of <br />21 the compaction train. The test point evaluation shall be performed in accordance with <br />22 instructions from the Engineer. The number of passes with an approved compaction train, <br />23 required to attain the maximum test point density, shall be used on all subsequent paving. <br />24 <br />25 HMA for preleveling shall be thoroughly compacted. HMA that is used for preleveling <br />26 wheel rutting shall be compacted with a pneumatic tire roller unless otherwise approved <br />27 by the Engineer. <br />28 <br />29 Test Results <br />30 For a sublot that has been tested with a nuclear density gauge that did not meet the <br />31 minimum of 92 percent of the reference maximum density in a compaction lot with a CPF <br />32 below 1.00 and thus subject to a price reduction or rejection, the Contractor may request <br />33 that a core be used for determination of the relative density of the sublot. The relative <br />34 density of the core will replace the relative density determined by the nuclear density <br />35 gauge for the sublot and will be used for calculation of the CPF and acceptance of HMA <br />36 compaction lot. <br />37 <br />38 When cores are taken by the Contracting Agency at the request of the Contractor, they <br />39 shall be requested by noon of the next workday after the test results for the sublot have <br />40 been provided or made available to the Contractor. Core locations shall be outside of <br />41 wheel paths and as determined by the Engineer. Traffic control shall be provided by the <br />42 Contractor as requested by the Engineer. Failure by the Contractor to provide the <br />43 requested traffic control will result in forfeiture of the request for cores. When the CPF for <br />44 the lot based on the results of the HMA cores is less than 1.00, the cost for the coring will <br />45 be deducted from any monies due or that may become due the Contractor under the <br />46 Contract at the rate of $200 per core and the Contractor shall pay for the cost of the traffic <br />47 control.