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Section 02514

brooming so that the corrugation, thus produced, will be unifonn in appearance and not more than 2 mm (1116 inch) in depth.

        • 5.

          The completed surface shall be unifonn in color and free of surface blemishes, fonn marks, and tool marks. The finished surface of the pavement shall not vary more than 5 mm (3/16 inch) when tested with a 3000 mm (10 foot) straightedge.

        • 6.

          The thickness of the pavement shall not vary more than 6 mm (1/4 inch).

        • 7.

          Remove and reconstruct irregularities exceeding the above for the full length between regularly scheduled joints.

        • 8.

          Follow all requirements of the American Disabilities Act.

    • 3.12

      CONCRETE FINISHING VEHICULAR PAVEMENT

      • A.

        Accomplish longitudinal floating with a longitudinal float not less than 3000 mm (10 feet) long and 150 mm (6 inches) wide, properly stiffened to prevent flexing and warping. Operate the float from foot bridges in a sawing motion parallel to the direction in which the pavement is being laid from one side of the pavement to the other and advancing not more than half the length ofthe float.

      • B.

        After the longitudinal floating is completed, but while the concrete is still plastic, eliminate minor regularities in the pavement surfaces by means of metal floats, 1500 mm (5 feet) in length, and straightedges, 3000 mm (10 feet) in length. Make the final finish with the straightedges which shall be used to float the entire pavement surface.

      • C.

        Test the surface for trueness with a 3000 mm (10 foot) straightedge held in successive positions parallel and at right angles to the direction in which the pavement is being laid and the entire area covered as necessary to detect variations. Advance the straightedge along the pavement in successive stages of not more than one halfthe length of the straightedge. Correct all irregularities and refinish the surface.

      • D.

        The finished surface of the pavement shall not vary more than 6 mm (1/4 inch) in both longitudinal and transverse directions when tested with a 3000 mm (10 foot) straightedge.

      • E.

        The thickness ofthe pavement shall not vary more than 6 mm (114 inch).

      • F.

        When most of the water glaze or sheen has disappeared and before the concrete becomes nonplastic, give the surface of the pavement a broomed finish with an approved fiber

8 Section 025 4

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