DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

B. Cutting Existing Pavement: Contractor shall take all necessary precautions to protect existingpavement or surfacing. Asphalt and concrete that must be removed shall be cut to a neat lineprior to removal, and the resulting clean edge shall be protected during construction. If thisedge is damaged, the existing pavement shall be cut again until a neat edge is obtained.C. Preparation of Subgrade: Subgrade shall be thoroughly compacted and properly shaped beforeany surfacing materials are placed. No concrete or hot bituminous pavement shall be placed onsubgrade that is frozen, muddy, or has frost or water thereon.3.02 BITUMINOUS PAVEMENTA. Aggregate base course shall be placed and compacted on top of finished and compactedsubgrade. Placement and compaction methods shall be as specified in the governing standards.B. Prior to placing the hot bituminous pavement, the top surface of the aggregate base courseshall be given a prime coat of diluted asphalt emulsion applied as specified in the governingstandards for hot bituminous pavement. In addition, the exposed edge of existing asphalt, newor existing concrete, or metal castings that will not have hot bituminous pavement placedagainst them shall be coated with a tack coat as specified in the governing standards for hotbituminous pavement.C. Hot bituminous pavement shall then be placed in one lift, to the grades shown on theDrawings. The placement and compaction of the hot bituminous pavement shall be asspecified in the governing standards.3.03 CONCRETE CURBSA. Concrete curb shall be constructed in the locations and to the shape indicated on the drawings.B. Compact each layer of subgrade to a minimum of 95 percent of Standard Proctor density(ASTM-D698).C. Expansion joints shall be placed at changes in direction and at intervals not greater than 50feet. Expansion joints shall be ¾ inch wide, filled to within one inch of the surface withbituminous expansion joint material cut of the shape of the curb section. Dowels shall beplaced across expansion joints as indicated on the drawings.D. Contraction joints shall be provided at intervals of not more than 10 feet. Contraction jointsshall consist of a groove at least 1-1/2 inch deep sawed in the green concrete or a plane ofweakness formed by inserting a removable metal template.E. All expansion and contraction joints shall be filled flush to the surface with joint sealingcompound. The joint sealing compound shall be finished slightly concave and shall not beallowed to overflow the joint.02510 - 211/07 PAVEMENT, CURBS, AND WALKS