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The pavement wearing surface shall not vary more than 1/4 inch when measured with a <br />10-foot straightedge laid on the surface in a direction parallel to the crown. <br />All adjacent structures and painted surface shall be protected from asphalt spray and drift <br />by covering with paper or in a manner acceptable to the ENGINEER. No liquid asphalt <br />will be allowed to mar the appearance of finished concrete structures. <br />This CONTRACTOR shall be responsible, during the contract maintenance period, to <br />correct any holes, blemishes, depressions, and surface irregularities in the pavement <br />surfaces caused by his faulty workmanship, materials, or heavy equipment, or earth <br />settlement. <br />Where pavement repairs are itemized in the bid schedule, the payment limits are <br />determined by the dimensions shown in the detail drawings. Where pavement repairs are <br />not itemized in the bid schedule, they are considered incidental to other work and are not <br />a separate pay item. <br />b. Gravel, crushed rock or iron ore - Gravel, crushed rock or iron ore surfaces sha11 be <br />repaired to the existing thickness, but not less than 6". They shall be compacted to 95% <br />standard Proctor ASTM D-698 at optimum moisture. <br />c. Asphalt Pavement Repairs - Asphalt pavement shall be repaired with like base material of <br />a thickness equal to that existing, but in no case less than 6" compacted thickness. The <br />crushed rock base shall meet all applicable requirements of Texas Department <br />Transportation, Itern 247 Type A, Grade 1 or 2. The asphalt wearing surface shall be <br />Item 340, Type D, hot-mixed, hot-laid and shall have a compacted thickness of 1-1/2". <br />The flexible base shall be tack coated prior to the asphalt overlay with 0.20 gallon per <br />squaze yard of MC-30. The asphaltic wearing surface shall be rolled with a flat steel <br />wheel roller. <br />d. Concrete pavement and driveway repairs - Concrete pavement walks, and drives shall be <br />repaired immediately. The repair width shall be the width of the trench plus 6" on either <br />side thereof. The line along which the pavement is removed shall be sawed a minimum <br />of 1-1/2" deep before pavement is broken out. The thickness shall be not less than that <br />existing, but in no case less than 5" for streets, 4" for driveway approaches and sidewalks. <br />Any existing reinforcement steel shall be cut and bent back for concrete rernoval and then <br />rebent and tied into place prior to concrete placernent. All cut reinforcement shall be <br />spliced with equal size bars of a length equal to 30 diameters, or wire mesh. <br />Exisring concrete work that is non-reinforced shall be replaced as non-reinforced. <br />Concrete for street pavement and curb and gutter shall be Class A. For drives and walks <br />it shall be Class B. <br />96 <br />