1927 (#803-839) - Laserfiche WebLink

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inch from the straight edge except at curves or grade changes. (e) CONSTRUCTION J~INTS., Construction Joints shall be made at the ends of all curb returns and at intervals of twenty (~0) feet therefrom, unless other- wise noted on the plans. This Joint sh~ll .be made by setting steel plates in a vertical position at right angles to the curb and Withdrawing them after the concr~ ~e has been tamped into place, he finishing shall be done to correspond to the scoring lines. (f) CONTRACTORS NAME ON CURB~ The Eontractor shall stamp his name on the curb at intervals 'of not less than one hundred (100) feet. The letters shall be not less than three-fourths (3/4) inch, nor more than one and one-half (1~) inches in height, and impressed to a depth or,one-fourth (~) inch. ~) CURING. The entitle curb shall be banked and covered with not less than two ( inches of earth or sand, within twenty-four (24) hours after completi( ~. During the next ten (10) days, it shall remain covered and shall be watered twice dai~y. (h) REPAIRS AND REPLACEMENTS. The contractor shall repair all curbs~ walks ~nd gutters, damaged by him during the construction of curb. ~Vhere any curb require~ repair before acceptance, the repair shall be ~ede by ~emoving and replacLug the entire section between scoring lines, and not by refinishing the damaged portion. ~,here the plans -p~ovlde for reco::struction of existing curb and the limit of new work specified does not fail on a scoring line, the entire section shall be removed and the new curb shall Join the o18 curb at-the first scoring line beyond said specified li~It. SECTION 2. Cement Sidewalk Construction. Cement sidewalk shall be placed upon a thoroughly dampened prepared and gauged as hereinbefore described. (a) DIMENSIONS. Unless otherwise specified on the plans, shall be of the following widths and total thickne~sess. subgrade, all sidewalks Sidewa~lks on residential streets shall be. five (S) feet in width and three and one-half (3½) inches in thickness. Sidewalks fronting business houses shall be the fuZ]. width between the property line and the back face of the curb, and fort. (4) inches in thickness. All.sidewalks cros~ng driveways shall be equal in width to the adjoining sideWalks, and flve~(5) inches in thickness. of the street The sidewalk shall cover the entire area included within the prolongation side lines of the intersecting str~ets and the curbs and curb returns at all intersections, unless otherwise specified or shown on the plans. (b) SIDEWALK SLOPE. The finished surface of the cement sidewalks'shall lle in a pl~ne sloping up from the established grade at the curb line at the rate of three (3) inches in twelve (12) feet, unless otherwise specified or ~own on the plans. (c) FORMS. Strips used as side forms shall be not less than one and three-fourths (1-3~4) inches.in thickness nor less than the thickness of the side- walk, and shall have a smooth straight upper edge. Ail side forms shall be well staked or otherwise held to the established line and grade, and their upper s~face shall,conform with the, finished surface of the sidewalk. The forms shall.be thoroughly cleaned before being used. (d) PLACING CONCRETE. Concrete, machine or hand mixed as hereinbefore .~escribed, shall be spread upon the.subgrade between the side'fo~ms and thoroughly tamped until.the concrete is compacted. The surface of the concrete must ~e:smooth and uniform and shall b.e tested for grade with a guage n~ ched at each end and extending one-half (~) inch below the tops of the side fom~ms. (e) ~E~RING SURPACE AND FINISH. The finish mortar shall be applied with- in thirty (30) minutes after the concrete has.been placed~ and thoroughly troweled in. Sufficient mortar shall be used to produce a wearing surface not less than one-half (~) inch in thickness at any place. The 'surface shall then be troweled, retrow~ted~ jointed or marked into squares and polished. Between grade changes, the finished walk shall show an even, true surface va2ying less than one-fourth (~) inch from a five (8) foot straight edge.. (f) MARKING, For sidewalks five (8) feet in width, the surface shall be Jointed or marked into two and one-half (2~) foot squares. Pot other widths of sidewalks, the squares shall not be larger than ten (10) square feet in area. ~g) EXP~SION JOINT. Expansion jo~.nts constricted as hereinbefore specified shall be placed on the produced property lines at returns and at the sections of all other walks on the property side, unless otherwise shown or specified. intern (h) CON&TRUCT,ION JOINTS. Construction Joints shall be placed at interva of twent~ (20) feet between the property lines of intersecting streets or alleys 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 withdraw- ing them after the?oncrete has been tamped into place.