1963 825 Ordinance - Laserfiche WebLink

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(~;) :TC_rii .I~1 I'R.'?L~~Z]NG ?ivLATH~i,: Unless other?crise specified., concrete vrhen de- posited shall have a temperat?are of not less than 5U degrees Fahrenheit, nor More than 115 degr. ees Fahrenheit. In freezing, vreather, suitable ?nea.ns s17a11 be provided for maintaining the concrete at a. temperature of 1i.5 degrees Fa.hrcn•- heit for a period cf not less than seven (7) days. Cons-t.ruction must stop if the temperature fa.11s to. 3C cle;;rees Fahrenheit. No frozen materi~ is sh~:ill be used in the. concrete nor sha.l]. concrete be laid o~i frozen ground. Any concrete ?rshich :~;ay be damaged bar f.'rost action shall be re- placed b~T t'_ne Contractor at his ovm expense. (h) F'CR~~IS: Contractor must use steel fcr-~s, of an ap,~~roved section, for both straiiht and radial lcfork, if concrete integral curb is used or :if Contractor elects to install sandstone curb after ~tlie concrete pavement i s constructed. `fhe steel forms must. be str~:.ight and. of a depth equal to -I;he thicl{ness of the pave- ment. t+orms h<..virzg a. c~onth :rea~ter. than the ~thi_c.'::ness of concrete pavement can be used if the otrte.r. edge of paZ-'ei?lent :is 9_ncreased. ~i:,o equa.l the depth of form on a taper of 1 foot in ?~~~idth to each :i.nch in del::-th. .!till steel for. ms riust be clean and coated ?~rith a suitable oil be:Eore ~th.e i~l~cr.:irg of concrete . The forms must be securely braced and helra. to the exact li ne =end ~•rac'~.e of street and ti°~~zen tested Kith a 10 foot stra.i__,ht-e::lg"c sha.]1 sho?r no variance of m~oz°e than l/8 inch from true plane: The forms must be suprorted on thoroughly compacted ;ria.terial for their emir. e length. The sl:~,~.ce to be filled ?nrith conc_:~ete must be Erse from all rubbish or debris at the t]7ne the cencret.e is placed. Forms shall not be removed until 2~. hours after the concrete pavement his been pl;z.ced. (i) Ci-iECI:IITC SU~~~JtA1~E: `Che Contractor shaJ_I f u.rnish anc:l ?ise a sub~;ra.de template, - as above described, ~.~pon the road bed immedia.tel~T ahead a:'' the concrete ~;;ork. Any corrections in the surface of the su'ogr~de .must be ma~:~.e ~ with hand tools.; the filling of depression;; must b;~ made ?with concrete, crushed stone or slag. Lart,h or other soft materia.]. shall not be used izi rectifying subt.rade depressions. <<fter rolling has been completed; This cneclcing of subgr«d.e sh,~a11 be ~ Pert of the Contractors obligation and must at all times be kept s.t least 20 feet ahead of. the concrete beir..g 1<~id. (j) SP ~.4Y: During dry ~;rea.ther the sub;;r~;de sl-all be '_~ept ?nois-t b~T sprajjing, but on clay soil such operations must be done durin,. the: noon Period or after the days ?crock," in order to alto?cr excass tira~F,er to 'oe :~.bsorbed. '~dhenever sprayi,:~~j is specified it contemplates the use of a device that z^rill tlzrotnr f'i.nel.j divia~:,~~ jets of ?crater over relatively large areas; the flood.in~; of materials of surfacos b.r solid streaun:s of ~v^rater f~ri11 not be allo:rr~d. (lc) PLACING: Ur~on t11e pz°epar. ed subgrade, and only "~~aher~ the subgrade is moist, the mixed concrete sha11 be deposited z~apidly to -t'rzerequ:ired depth and for the entire ?°.ridth of the ha.vement sections iri successive b<?tclies Yazd in a continuous operation. The use o:i :i.nte:-rmedia.-te .f orms~ or bullc>:ieads, between joints, trill not be permitted except as sno,;~•m on tl?e plans or otherwise specified. "chile being depcs?t•ecl tl-ie concrete shall be vigorously marii?~ula.ted ?with spades or other suit~,.ble tools to pr. event the .fozm~?.tion a~' voids or honeycombed sections. Special ~t.ttention shall lx: ~,;iven to the campa.cting o.f' the concrete against forms, curbs, street ra.st:ngs anu. joints. Tn the :went; of ~n interz~uption in the cae].ivcry of concrete or any mechanical difficulties z~ll::i_Ch result in stop~~in~~ ccnc~°Etc opera~l;ons for more than 30 m.inutcs, a t.r•.^.nsv~:rse cnris'~7~•u.ction ,joint shall 'ae fo-rmed as specified. Any concrete ?~rhich 'nas beer. delivereca :in qu;:arztities in e_~ce;;s of that needed to CY-~.a.