McCann Construction Enterprises Inc 11/7/2018

I 1 I 2 HMA plant mix shall not be placed until 3 days after the cement concrete base has 3 been placed or otherwise permitted by the Engineer. The HMA plant mix shall not 4 be placed until the concrete base has received a tack coat of CRS-2 at a rate of 0.12 5 to 0.20 gallons per square yard. The edges of the existing asphalt and castings shall 6 also be painted with the tack coat. The HMA pavement shall then be placed, leveled, 7 and compacted to conform to the surface of the existing HMA. Immediately I 8 thereafter, all joints between the new and original asphalt pavement shall be painted 9 with CSS-1 asphalt emulsion and covered with dry sand before the asphalt solidifies. 10 '11 Asphalt shall be compacted to 92% of maximum density as determined by WSDOT 12 Test Method 705. 13 I 14 5-06.3(4) HMA on Granular Base 15 16 After the Crushed Surfacing Top Course subgrade has been leveled and compacted, 17 HMA Class 1/2" Page 64-22 shall be placed to a thickness of 1" greater than the 18 existing asphalt pavement depth or to a minimum of 3", whichever is greater. Asphalt 19 shall be compacted to 92% of maximum density as determined by WSDOT Test 20 Method 705. 21 22 5-06.3(5) Untreated Roadway Surfaces 23 24 Existing crushed rock, gravel, and oil mat streets shall be restored with Crushed 25 Surfacing Top Course to a compacted depth of 4"within the neat lines of the trench. 26 Crushed surfacing shall be mixed, placed, spread and shaped in accordance with I 27 the requirements of Section 4-04 of the Standard Specifications. 28 29 5-06.3(6) Temporary Pavement Patching 111 30 31 The Contractor shall furnish, place and maintain temporary pavement patching, at 32 locations as directed by the Engineer, until such time as a permanent patch of I 33 permanent paving can be made. 34 35 Temporary pavement patch shall consist of a 2"thick course of cold mix asphalt (MC 36 250) over a 4" course of Crushed Surfacing Top Course. The crushed surfacing top 37 course shall be compacted to 95% maximum density as determined by WSDOT test 38 method No. 606. Asphalt shall be compacted to 90% of maximum density as 39 determined by WSDOT Test Method 705. 40 41 Temporary asphalt patching shall be required where roadway or walk is needed for 42 vehicular or pedestrian traffic, during the construction period, until permanent 43 pavement and sidewalks can be constructed. 44 45 In the event that the temporary surface subsides after the initial placement, additional 46 MC 250 and crushed surfacing shall be applied to maintain the surface. 47 48 Stockpile of plant mix and crushed surfacing for temporary patching shall be 49 provided on the site by the Contractor. 50 i N. BROADWAY TRANSIT IMPROVEMENT PROJECT STATE FUND#GCB2316; COE WO#3644 106 August 8, 2018 I