1925 (#1403-1607) - Laserfiche WebLink

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the roller, the surface mixture ~t~ thoroughly compacted and joints s~'~lea Wllli lio~ (c) The surface of the pavement, after compression, shall be smooth and true to the rounding area. SECTION S. JOINTS. shall pass over the unprotected end of the freshly laid mixture only when the laying of the course is discontinued for such length of time as wanld permit the mixture to become chilled, tn all such cases, including the formation of joints as hereinbefore specified, back the joint so as to expose an unsealed or granular surface for the full specified depth of the course. At the end of each day's work on surface mixture, joints shall be formed the Superintendent of Streets. When the laying of the surface course mixture is resumed, the exposed edge of the joint shall be painted with a thin coat of hot asphalt cement or asphalt cement thinned with naphtha, and the fresh mixture shalt be raked against the joint, SECTION 9. SURFACE. The final surface shall be smooth and free from inequalities and shall vary, on the general surface of the street, not more than one-fourth ('~) inch from an eight foot straight edge laid parallel to the center llne of the street, except at grade breaks. And when wearing surface forms the gutter, all gutters shall be made to drain and shall not vary more than one-fourth (~) inch from a sixteen (16) foot straight edge laid in the flow line of the gutter. Surface not in conformity with this requirement shall be removed and new surface laid. Ironing and burning down of high places with hot irons except in the flow lines of the gutters will not be permitted. SECTION 10. PROTECTION OF PAVEMENT. If, at the time of laying asphaltic concrete wearing surface mixture, side supports, such as curbs, gutters or pavements do not exist, headers shall be set true to line and grade. These headers shall be of good sound timber free from warp and at least two inches thick and shall be equal in width to the thickness of thc pavement. The headers shall be well staked, or otherwise held to the established line and grade with their upper edges flush with the finished surface of the pavemnt, In all cases the headers shall be of sufficient strength to prevent the mixture from squeezing out under the roller and shall remain in place until final compaction has been obtained; or when noted on the plans, they shall be left permanently in place. Sections of newly compacted wearing surface mixture shall be protected from traffic for at least twelve (12) hours or until they have become properly hardened by cooling. ~CTIOIq 11. STONE DUST FINISH. The asphalt concrete wearing surface shall be swept with stone dust or Portland Cement, after it has been given the ~inal rolling and be[ore it has been opened to traltfc. A su~cicnt quantity of stone dust shall be used to thoroughly fill all voids in thc surface of the pavement.