1925 (#1403-1607) - Laserfiche WebLink

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tamped until the concrete is compacted. The surface of the concrete must be smooth and uniform and shall be tested for grade with a guage notched at each end and extending one-haft (~) inch below the tops of the side forms. (e) WEARING SURFACE AND FINISH. The finish mortar shall be applied within thirty (~0) minutes after the concrete has been placed, and thoroughly troweled in. Sufficeint mortar shall be used to produce a wearing surface not less than one-half (~) inch in thickness at any place. The surtace shall then be troweled, retroweled, jointed or marked into squares, and polished. Between grade changes, the finished walk shall show an even, true surface varying less than one-fourth (~) inch from a five ($) foot straight edge. (0 M~ARKING. For sidewalks five (5) feet in width, the surface shall be jointed or marked into two and one-half (2~) foot squares. For other widths of sidewalk, the squares shall not be larger than ten (10) square feet in area. (g) CONSTRUCTION JOINTS. Construction ~oints shall be placed on the produced property lines at returns, and at intervals of twonty (20) feet therefrom, unless otherwise specified. The joints shall be made by setting one-fourth (~) inch steel plates in a vertical position at right angles to the walk, and withdrawing them after the concrete has been tamped into place. (h) CONTRACTOR'S NAME ON SIDEWALK. The Contractor shall stamp his name in the sidewalk at intervals of not more than one hundred (100) feet. The letters shall not be elss than three-fourths (~) inch, nor more than one and one.half (1~) inches in height and impressed to a depth of one-fourth (~) inch. (i) PROTECTION AND CURING. Sidewalk shall be protected by barriers and when the concrete has attained its initial set, the sidewalk shall be covered with earth to a dpeth of two (2) niches and watered twice daily for ten (10) days. (j) REPAIRS AND REPLACEMENTS. The Contractor shall repair all curbs and walks damaged by him during the construction of sidewalk. Where any sidewalk requires repair before acceptance, the rep.ah-~shall be made by removing and replacing entire sections and not by refinishing the damaged portion. Where the plans provide for reconstruction of existing sidewalk and the limit of new work specified does not fall on a scoring line, entire sections shall be removed and new sidewalk shall join existing sidewalk at the first scoring llne beyond said specified limit. 8~CTION 3. CONCRI~TI~ GUTTERS. CONSTRUCTION, Concrete ~ltters shall be constructed upon a dampened subsrade prepared and ~uaged as hereinbefore specified. (a) FORMS. If wooden, ~utter forms are used, they shall be not less than one and three-fourth (1~) i~ches in thlcimcss and shall extend to the full depth oI the ~utter. They shall be sound lumber, having a smooth straight upper edge. Unless otherwise specified on the plans, the cro~s slope of all ~utters except cross ~utters shall be one (1) inch for a width of one (1) foot~ one and one-half (1~) inches for a width of two (2) feet and two (2) inches for a width of three ($) feet. Cross ~uilers shall be constructed with thc center one-half (~) inch below a straight edge resting on each side, unless otherwise specified. Forms for the outer face of the gutter shall be placed parallel with the face of the curb. (b) THICKNESS. All concrete gutters at curb returns, between the produced side lines of intersecting streets, and to the end of the curve, where the curve extends beyond said produced lines, and concrete gutters across street or alley intersections, shall be eight (8) inches in thickness, unless otherwise specified. The thickness oI concrete gutters at all other places shall be five (5) inches, unless othrwise specified. PLACING CONCRETE. Concrete shall be spread find guaged to such a thickness that when taml~ed and finished the thickness shall be, at any point, not less than specified. Thc concrete shall be tamped until its surface is covered with sufficient mort~ to permit of finishing.