Laserfiche WebLink
CITY OF EVERETT SPECIAL PROVISIONS <br /> and 0.10 gallons per square yard of retained asphalt. Obtain application rate <br /> approval from Engineer. Apply a heavy application of tack coat to all joints. For <br /> Roadways open to traffic, limit the application of tack coat to surfaces that will be <br /> paved during the same working shift. Provide spreading equipment equipped with <br /> a thermometer to indicate the temperature of the tack coat material. <br /> Do NOT allow equipment to operate on tacked surfaces until the tack has broken <br /> and cured. Repair tack coat if the Contractor's operation damages the tack coat <br /> prior to placement of the HMA. <br /> ' Provide tack coat consisting of CSS-1 or CSS-1h emulsified asphalt. The CSS-1 <br /> and CSS-1h emulsified asphalt may be diluted once with water at a rate not to <br /> exceed one part water to one part emulsified asphalt. Provide tack coat having <br /> sufficient temperature such that it may be applied uniformly at the specified rate of <br /> application and not exceed the maximum temperature recommended by the <br /> emulsified asphalt manufacturer. <br /> 5-04.3(4)A Crack Sealing <br /> 5-04.3(4)MGeneral <br /> ' When the Proposal includes a pay item for crack sealing, seal all cracks 1/4- <br /> inch in width and greater. <br /> Cleaning: Ensure that cracks are thoroughly clean, dry and free of all loose <br /> and foreign material when filling with crack sealant material. Use a hot <br /> compressed air lance to dry and warm the pavement surfaces within the crack <br /> immediately prior to filling a crack with the sealant material. Do NOT overheat <br /> pavement. Do NOT use direct flame dryers. Routing cracks is not required. <br /> 1 Sand Slurry: For cracks that are to be filled with sand slurry, thoroughly mix <br /> the components and pour the mixture into the cracks until full. Add additional <br /> CSS-1 cationic emulsified asphalt to the sand slurry as needed for workability <br /> ' to ensure the mixture will completely fill the cracks. Strike off the sand slurry <br /> flush with the existing pavement surface and allow the mixture to cure. Top off <br /> cracks that were not completely filled with additional sand slurry. Do NOT place <br /> the HMA overlay until the slurry has fully cured. <br /> Provide sand slurry consisting of approximately 20 percent CSS-1 emulsified <br /> asphalt, approximately 2 percent portland cement, water (if required), and the <br /> remainder clean Class 1 or 2 fine aggregate per section 9-03.1(2). Thoroughly <br /> mix components and then pour into the cracks and joints until full. The following <br /> day, top off any cracks or joints that are not completely filled with additional <br /> sand slurry. After the sand slurry is placed, strike off filler flush with the existing <br /> pavement surface and allow to cure. Do NOT place the HMA overlay until the <br /> slurry has fully cured. The requirements of Section 1-06 will not apply to the <br /> portland cement and sand used in the sand slurry. <br /> In areas where HMA will be placed, use sand slurry to fill the cracks. <br /> In areas where HMA will not be placed, fill the cracks as follows: <br /> ' a. Cracks 1/4- inch to 1 inch in width - fill with hot poured sealant. <br /> b. Cracks greater than 1 inch in width —fill with sand slurry. <br /> Hot Poured Sealant: For cracks that are to be filled with hot poured sealant, <br /> apply the material in accordance with these requirements and the <br /> manufacturer's recommendations. Furnish a Type 1 Working Drawing of the <br /> manufacturer's product information and recommendations to the Engineer prior <br /> Watermain Replacement"U" Division 5—SURFACE TREATMENTS October 1, 2019 <br /> AND PAVEMENTS <br /> WO No.—UP3698 SP- 153 <br />