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1. The concrete shall be distributed on the subgrade to such depth that, when it is <br />consolidated and finished, the thickness required by the Drawings will be obtained <br />at all points and the surface will at no point be below the grade specified for the <br />finished surface. The concrete shall be deposited on the subgrade in a manner <br />which will require as little rehandling as possible. Placing of the concrete shall be <br />continuous between transverse joints, without the use of intermediate bulkheads. <br />2. Concrete shall be thoroughly consolidated against and along the faces of all forms <br />by means of vibrators. Vibrators (if needed) shall not be permitted to come in <br />contact with the subgrade or a side form. Vibration at any one location shall not <br />continue so long as to produce puddling or the accumulation of excessive grout on <br />the surface. In no case shall the vibrator be operated longer than 15 seconds in <br />any one location. <br />B. Striking -Off, Consolidating And Finishing Concrete: <br />1. Immediately after the placing, the concrete shall be struck off, consolidated and <br />finished, to produce a finished product conforming to the cross section, width and <br />surface finish required by the Drawings and Specifications. <br />2. After the concrete has sufficiently set a minimum of 12 hours, the Contractor shall <br />remove the forms and shall backfill the space on each side. The earth shall be <br />compacted and graded in satisfactory manner without damage to the concrete <br />work. Honeycombs shall be filled with sand cement mortar. Plastering will not be <br />allowed on the face of the curb. Rejected curb, curb and gutter or valley gutter <br />shall be removed and replaced without additional compensation. <br />Co Final Finish: As soon as the water sheen has disappeared and just before the concrete <br />becomes nonplastic, a light broom finish shall be given to the surfaces, except curbs. <br />D. Joints: Joints shall be constructed where shown on the DRAWINGS. <br />1. Transverse Construction Joints: Transverse construction joints shall be <br />constructed at the end of all pours and at other locations where the pouring <br />operations are stopped for as long as 30 minutes. Construction joints, however, <br />shall not be placed within ten feet of any other transverse joint or of either end of a <br />section of curb. If sufficient concrete has not been placed to form a slab at least <br />ten feet long, the excess concrete, back to the last preceding joint, shall be <br />removed. The joints shall be the full depth of the pavement and shall be formed <br />by placing a wood or metal bulkhead accurately and securely in place, in a plane <br />perpendicular to the profile and center line of the pavement. <br />2. Transverse Contraction Joints: Transverse contraction joints shall be constructed <br />along curbs, slabs on grade, and walks at the intervals specified in 3.03 D4 below, <br />where shown on the DRAWINGS, and shall consist of planes of weakness created <br />by sawing the surface of the pavement or tooling the joint. <br />a. It shall be the Contractor's responsibility to see that the sawing <br />equipment does not damage the curb, slabs on grade, or walk and <br />to saw the transverse contraction joints as soon as the concrete has <br />hardened to the degree that tearing and raveling are not excessive <br />and within a maximum time of 12 hours after the pour. If, at any <br />time, uncontrolled cracking occurs, the Contractor will be required to <br />replace the affected sections and modify his methods. <br />02440=3 02440 — Concrete Driveways, etc... <br />L <br />