1957 566 Ordinance - Laserfiche WebLink

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f'orrn this intermediate transverse joint shall not be used. aiefore any reinforcing; fabric is placed the concrete shall ~~e struc~- c~~' so 'L}Yat its surface ~rTi,.l conform to a surface par411e1 ?~aith and. 2 inches 'oelo?? t.};; finished sur. face of the pavement. On this surface the U~elded yrir. e .~'~.:aric reir~forcemer_t shall 'be placed and. so securel~T held that it shall rerna.in to a r.,:i."o.rr? depth of 2 inches halo?~r the finished surface dur~.n~ the placinU of.' the e~r':1.:e~~1~..tF.'z:. ~+~ncrete. lirusYedia.tely after the pla.ci:ng of the ?-,elded ?r~rire f~^.bric re:i".zforc~~~ae~~~.c the top 2 irclles of concrete shall be placed; and in no event sh~.ll ?ror.: t}~~an I,.S ~:?inutes elapse bet?green the ala.cinC of tiie concrete Belo?^.* the reial- iorce~rient a.ncl t}"Ya.t above the reinforcement. Sufficient concrete shall be used so that afte3° being thorou~ylly consolir.,ated b-,r tamr,>in~;, r^' :Y"iilg, mac'_nine or hand fir~~.shi.n.g, as lYereina:E'ter specified, thu concrete shall llatr a deyoth of a.t lea::t the thickness sho?~m on the plans or proposal. (71 i?:!~CI-ITi+IE 1~IF~i:tSll1}du~: Unless other?~~risn specif~!ed or l~ez~;:itt:.•d, and irn~,edir:tely a..E'ter this concrete :i.s placed, tae su.-r. face of t':.le concrete,~h^:~ll be brought to the proper grade ar~~l cro?~:n and t±.lorou~hly comp^cted by a rnec}=apical, sel.t'-propelled fi~l~.shing machi:le of the t;,-;~e approved by th~~ aJ_z~ ineer arr .'?eating the rec;uiz°e- r~_ents o~' ~ec.t:i.o?7 C~~-~ of the Construction and :[~tatez'i?1 Sl,ecif~.catio?zs oy the Gh.i o Depai~"l;K~ •nt of F-?igh.ti^3.~~s, a r.o~r of. i^r;~.ich is opt i ile in ~tho of'f i.ce of the i?,ngineer. The finishin ~~:a.chine shall be operates' over e•1ch section of the ;~a.ve.aYeilt t?~:0 O:C n1OrE; "times ^I'1G': :L"t :iUCil lnterVllS as e.re reC'il?fired tO ?:?rOduCC the ~;pe C:ifiiJd results . Uur. ing t':~.e ope.r. a"tion of stri'-.~ini; off the . ca.~cr~ste surf.'ace, a uniform ride of concrete approximately 3 inches in de-cth sh^.11 be r~laintair..ed ahead of the stri!~ce-off' :£or :i..ts entire ?-^ridth. The fini_shin~ ~_ia.c':ine sha1.1 not be c;r~~"~",~~d be;ror_d the point ?~~llere the 3 incl~Y dept} of -the surplus concrete can l;e ma.in- tained except ~,rhere necessary in maki.lg joints. :4f'te.r the first opea~r tier. of 'the ~':irisl°~iYig r~iac%Y;"n2, a.ctd.itiorYal concrete sha7.1 be added n.s required., porous spoi:.s s?_a.ll be retires; red, a.nd the surface re- Strl'_C~.C by the finisl7in~ mac}Pine. Forous S;~Ot3 shall not 'oe elimina+,,ec b~T "ta?n';%~..n~; Or ~x'OU'tiYl~;. _ rl~}.Y~ elevation and arrzngeL?:ent o.' t}°~e strike-off and screads shall be such •Lh;:?t a. finished. pavement }laving; the specii'icd. cro~.}n and thic'ness ?rril.l be se- cured. The: concr.•ote a.cljacent to transTrerse joints s'r.:a11 be thorou~1:~.1~- compacted by me<~.ns of a.n apprroved internal vibrator. The vibrators uses}. for this purr. ~~se „h^~~I.1 be of the pnsv.matic, ~;as-clri.ven, o~° Electric "t~~}?e and s'~.al?_ be o"pe:r,~t2d a.t a frequency of not less "than 3200 puls.=~tions pc;r minute. "~t the t:irie the ccrr- crete is pla.cecl and spread, it sha.11 be thorouz;h1.y sA~~aded and vii~ra.ted a.t the forms, curbs, bul'cheads, center joints arYd else?^rhere ?zr~lcss ot},er?~*ise specified or permitted. • The surface of the cc?lcrete shall be tested L,efore t}fie final belt:i.nL, using an approved standard straig}lt-edg;e, lD ~:eet in length, and a. ten:nla"~e cut to the proper section. Irre~;ula:ri.ties exceetlinU~ 1/Z~ inch shall be corrected '~efore the initial set ha.s deve7.oped i.n t1_~e concrete. ?after the COn1p3CtlYlg; of the conr..rete rnd ~,~rhen the surface has been brouGht to the pz~oper grade, cross-section and smoothness, it shall be finished by the use of a canvas or i~?zbber belt, or a that ?~~rooden bo^zrd not less than & inches in va~idth and appro~cimately one i'oo"t shorter than the -+~ridth of the pavement slab. The fi.niahing belt ma.~r be either hrincl ar ?_nechanically opera"teci. The fin- ishing belt o.r bo~~,.rd sha7.1 be worked ?^rith •^. crossv~ri.se and. lon.ai-tudinal motion until all surface irre~;lllari.ti.os ^~.re eliminated a.lld all surplus 1~, Ater removed. Care s}"Pall be observed in the use of the fi.ni.slling belt or board not to permit the edges to dig into the surface of -tl"tG concrete or. to ti^rork the crovJn out of the CI =~