Section 02510 Concrete Walkways - Laserfiche WebLink

Home Browse Search

02510 - 3/5 C. The width of all repairs shall extend at least 12 inches beyond the limit of the damage, and no more than 3 sidewalk flags. The edge of the sidewalk to be left in place shall be cut to a true edge along an existing expansion joint or edge of flag, with a saw or other approved method so as to provide a clean edge to abut the repair. The line of the repair shall be reasonable uniform with no unnecessary irregularities. 3.03 CURBS AND GUTTERS: The CONTRACTOR shall construct concrete curbs and gutters as specified in FDOT Specifications - Section 520 where shown on the Drawings and as necessary to restore existing conditions. A. Curbs shall be constructed in uniform sections ten feet in length except where shorter sections are necessary for closures or arcs. The sections shall be Separated by sheet metal templates set perpendicular to the face and tip of the curve and not less than 2 inches longer than the depth of the curb. The templates shall be held firmly during the placing of the concrete and shall be allowed to remain in place until the concrete has set sufficiently to hold its shape, but shall be removed while the forms are still in place. B. After the concrete has sufficiently set for a minimum of 12 hours, the CONTRACTOR shall remove the forms and backfill the spaces on each side. The earth shall be compacted in satisfactory manner without damage to the concrete work. Minor defects shall be filled with a mortar composed of one part Portland cement and two parts fine aggregate. 3.04 MISCELLANEOUS CONCRETE SLABS: The CONTRACTOR shall construct miscellaneous concrete slabs for mechanical equipment as indicated on the Drawings and as specified in FDOT Specifications Section 350. 3.05 PRE-CAST CONCRETE WHEEL STOPS: The CONTRACTOR shall install pre-cast concrete wheel stops by anchoring them with at least two three-quarter inch round reinforcing bars driven a minimum of one foot into the pavement. Use a setting tool to recess anchor rod a minimum of one-half inch below the top surface and caulk the opening. Wheel stops damaged when driving rods shall be replaced with new bumpers. 3.06 FORMS: The CONTRACTOR shall install the forms in accordance with the following: A. Use flexible forms for all curved form lines except: 1. Curves having a radius of 200 feet or greater may be formed in 10 foot or shorter chords. 2. Curves having a radius of 100 feet or greater may be formed in 5 foot or shorter chords. B. Thoroughly clean, oil, securely stake, brace, and hold forms to line and grade. C. Remove forms from front face of curb section at the time necessary to permit finishing concrete. Leave other forms in place not less than 12 hours after placement of concrete. 3.07 JOINTS: The CONTRACTOR shall install joints in the curbs as follows: A. Contraction Joints: 1. Construct at locations indicated and as follows: a. Division concrete curb into monolithic sections not greater than 10 inches in length.