1957 566 Ordinance - Laserfiche WebLink

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1~ l (g) iORK L`1 1i~FLZiNG ti'TLATHi~R: Unless other~~y2se specified, concrete wren de- posited shall have a temperature of not less than 50° Fahrenheit, nor more titan 115° Fahrenheit. In freezir_g ~~,reather, suitable means shall be provided for ma.intai.nirig the concrete at a temperature of 45° Fahrenheit for a period of ;'lot less than seven (7) days. Methods of he<a.ting shall be subject 'to the approval of the Engineer. Construction mast stop if the temperature falls to 36° Fahrenheito Ido frozen materials shall be used in the concre~,e nor shall concrete be laid on frozen ground. Any concrete ~rThich ;nay be damaged by frost action shall be re- ~laced by the Contractor at his ovm expense. (h) }.'ROTE%TION APTD CURING: After the forms have been removecl the concrete must be cured by covering ~;rith ti,ret burlap or cotton mats ~rrYlich shall be 1Lept in a. tl-ioroughly moistened condition for at least 2~. hours. As soon as the ~rJet bur- lap has 'oeen removed the curt; shall be covered yri~th touE,h, durable, one hundred percent sulphate Kraft paper cemented ZRrith a suitable bituminous material after the ex?esed curb ha.s been tl~.oroughly drenched with 1~1a ter. This paper shall be left in ~1a.ce, properly anchored vri~th stones or earth to prevent disturbance by ~~,ind, for a period of sip: (n) days. (i) TRt~i~ISPEu?r~~i' FILi,: I~ETIIGD OF CURIITG: After the concrete ha.s been properly placed. aizd finis<<ed as specified, and ti~~=hen so permitted by the Engineer or speci- fied, cast-irl-place concrete curb ma.y be cured by the use of a colorless trans- parent film nreetin~ the requir. ements of said State Iiigh~Tay Specifications, Sec- tion 1~I-10.21x.. The preliminary curing by the use of ti~!et burlap or canvas may be omitted i~*hen ti~is t~ lie of curing is folloa.ed. The curing inaterial shall be applied uniformly by means of a'rl appz°oved pressure spray distributor at the rate of one (1) ~;al_l_on to each 55 lineal feet of curb, and it shall be so applied that the concrete surface is completelJr coated and sealed at one application and is not marred. T1.1e curing material shall be applied immediately after the curb forms have been stripped. Aster the surface ha.s been coated, it shall be protected from all traffic or abrasive action from any source. .Complete duplicate spra4ring outfits shall be on the site of the ~raork vdZere this method of curing is adopted before concretir_g is started. Contractor sl;.all erect suitable barricades a.nd take adea~uate precautions to keep all traffic or paving operations off the conc~'ete curb until the e;rpiration of sever (7) days from the tune of application of the curing compound. (j) EXPAndSTON JOIl~TTS: At intervals of thirty feet a 3/L~!' expansion joint filled =,rrith pre~nolded bituminous e~-pansion material shall be constructed. (lc) RADIUS CUPS: Straight curb forms shall be used on all straight runs and set to curve on all radii over sixt~T feet (50t). Cvr'r~ forms of standard radii shall be used on all locations which call for less than a sixty foot (60~) radius. (1) COST: The contra.c~ price per linear foot of curb, lrahether straight or radial, r:_ust include all costs for. material, labor; forms, erluipment, machinery, T^tater, e}~ca.va.tion, ra~~Lr~ling, finishin", curing a.nd disposal of all surplus during con- struction and for the period o.f: pav9ng• guarantee. Curb must be true to line a.nd Grade of street before final acceptance. 1.~. SPECIAL 1~E~U1RH''ERTTS: (a) EY.Ai~~INATI0P1 OF PL1~iJS .Ai~ID SITE: The Contractor shall carefully ex~mrrine the plans and specifications, and sYlall ma.l.e his oti~n estimate of the quantities of c-l~