815 GRAND AVE 2022-04-15 - Laserfiche WebLink

CITY OF EVERETT SPECIAL PROVISIONS Compiete subgrade compaction prior to the required patching. Compact subgrade to 95-percent as delertnined by the ASTM D2922 (nuclear method). 5-06.3�2) Cement Concrete Pavement After the Crushed Suriacing Top Course subgrade for the pavement has been constructed and compacted to line and grade, the cement concrete pavement patch shall be placed and struck off to a thickness of one inch greater than the existing pavement or eight inch minimum thickness, whichever is greater. Perform all Work accordance with Section 5-05 of the Standard Specifications, except as modified by these Special Provisions and Standard Drawing No. 316. Place through joints and dummy joints to match existing or as directed by the Engineer. Finish and brush the surface of the concrete patch with a fiber brush. Place approved curing compound on the finished concrete immediately after finishing. 5-06.3�3) Cement Concrete Pavement Resurfaced with HMA Patch streets having cement concrete pavements suriaced with HMA as shown on Standard Drawing No. 316. The ihickness shall be one inch thicker than the existing concrete base or six ir,ch, whichever is greater. The top surface of the concrete patch shall match the top surface of the existing concrete base; in no case shall the top of the concrete be higher ihan the top of the existing concrete base. Brush finishing will not be required. Joints shail be placed to match existing or as directed by the Engineer. HMA plant mix shall not be placed until three days after the cement concrete base has been placed or otherwise permitted by the Engineer. The HMA plant mix shall not be placed until the concrete base has received a tack coat of CRS-2 at a rate of 0.12 to 0.20-galions per square yard. The edges of the existing asphalt and castings shall also be painted with the tack coat. The HMA pavement shall then be placed, leveled, and compacted to conform to the surface of the existing HMA. Immediately thereafter, all joints between the new and original asphalt pavement shall be painted with CSS-1 asphalt emulsion and covered with dry sand before the asphalt solidifies. Asphalt shall be compacted to 92-percent of maximum density as determined by WSDOT Test Method 705. 5-06.3(4) HMA on Granular Base After the Crushed Surfacing Top Course subgrade has been leveled a�d compacted, HMA CL 1/2", PG 64-22 shall be placed to a thickness of one inch greater than the existing asphalt pavement depth or to a minimum of three inches, whichever is greater. Asphalt shall be compacted to 92-percent of maximum density as determined by WSDOT Test Method 705. 5-06.3(6) Temporary Paveme�t Patching The Contractor shall furnish, place and maintain temporary pavement patching, at locations as directed by the Engineer, until such time as a permanent patch of permanent paving can be made. Temporary pavement patch shall consist of a two inch thick course of either: cold mix asphatt (MC 250) or hot mix asphalt (HMA CL 1/2", PG 64-22) as approved by the Engineer, over a three inch course oi Crushed Suriacing Top Course. The crushed surfacing top course shall be compacted to 95-percent maximum density as determined by Section 2-03.3(14)D. Asphalt shall be compacted to 90-percent of maximum density as determined by WSDOT Test Method 705. Temporary asphalt patching shall be required where roadway or walk is needed for vehicular or pedestrian traffic, during the construction period, until permanent pavement and sidewalks can be constructed. 3 Ave Detention Pond Retrofit Division 5- SURFACE TREATMENTS AND PAVEMENTS December 31, 2(N4 WO No. - UP3531 SP • 137