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CITY OF SANTA ANA <br /> SPECIFICATIONS <br /> PROJECT NO.: 25-6030 <br /> TRAFFIC SIGNAL INSTALLATION AT SEGERSTROM AVENUE AND ROSEWOOD <br /> AVENUE <br /> Asphalt <br /> The Asphalt for Types A and B shall conform to Subsections 600-2.2.4 and 600-2.2.5, <br /> respectively, and shall be viscosity grade AR-4000. <br /> Asphalt-rubber shall be placed in accordance with Section 600-2.7.4. <br /> Application shall be stopped before the distribution tank is empty to assure application <br /> does not run light. <br /> All reasonable precautions shall be taken to avoid skips at joints and to protect the surfaces <br /> of adjacent structures from being spattered or marred. Correction of any such defects shall <br /> be made at no expense to the AGENCY. <br /> Hot joints shall be made utilizing a squeegee man between the boot truck and the chip <br /> spreader to spread out or rake off overlaps or excess applications of the asphalt-rubber. <br /> The longitudinal joint between adjacent applications of screenings shall coincide with the <br /> line between designated traffic lanes. <br /> Just before spreading asphalt-rubber, Contractor shall provide a measure of viscosity with <br /> a Haake hand-held viscosity meter, if requested by the Engineer. Viscosity shall be as <br /> specified in the standard specifications. <br /> The distributor shall also include a tachometer,pressure gauge, volume measuring device <br /> and a thermometer. <br /> When a job delay occurs after full reaction,the asphalt-rubber may be allowed to cool. Just <br /> prior to restart of application, the material shall be reheated slowly to a temperature not <br /> less than 375 degrees F nor more than 400 degrees F. <br /> Cover Aggregate <br /> This section shall conform with Section 600-2.7.5. <br /> If the aggregate chips bounce or roll after striking the asphalt-rubber,the spreader shall be <br /> operated at reduced speed. <br /> 41 <br />