1957 566 Ordinance - Laserfiche WebLink

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minimum dimensions of three inches (3") belovr and above the outside of the pipe, and extending; laterally .to the walls of the trench as excavated. Pay- ment i'or such concrete bedding or encasement shall be ?nade at tl~e coptract unit pricQ for concrete beddn€; set forth in the proposal. In laying the pipe in contr. eta bedd~;g, care shall be take;. to prevent the p-re-cast biturn~.nous joints :fr~am coming ~.rito contact vrith the fresh concrete until after they have been jcinec}, The tr~nc)"! space each side of the pipe and for a distance of tti^,elve inches (12") above the to°:, thereof shall bra bacl~f filled vri th suitable fine earth, slat; or banlt sand and thgrou~?h1~r compacted. before: any back-fil.linG by machinery i_s al l ol~~ed . The draining of the trend! sr!a1.1 be so effected that no vvcater can rur~ throe€~:h nearly laid pir_~e, nor accumulr,te in trio trench until after the concrete has tl.oroLiGi!ly set. !'ll concrete vrorl; shall be set up hard before any backfilling work is started. In no case shall more than 20~J feet of trencY! be opened in advance of ,pipe laying; operations, unless orderec'_ by the ~ngir~QUr. :ill sel~rers shall. be tightl,~" closed at open ends at the completion of each day's work. 5. Lz;YIIdG COI~•I~R~TI': PIPL~'; (a) G11~1ERr~~L: A111 concrete pipe for use in see^rers sh~11 conform to the specify-- cations for concrete pipe in section 1 (p) above, and shall be of the class or type cal.l.ed for on the plans, or othar^<^rise specified. (b) JOIi•~TS: Unless otherwise specified; or called for on. the plans, all cony Crete pipe shall be joined with approved plastic bituminous jointing compound as specif yeti in Section 1 (q) above . (c) COI•~STItUCTTGi~ - SIl~tC;L:;: PIPS S'":ar~?.S: Iixcept as othervri.ss specify ed herein concrete pipe shall be laid in accordance with specifications for vitrified p7.pe in so far as the same may be applicable. Satisfactory ~ue~Lns shy:.ll be used to hold the pipe in line while the pips are being joined, and due pr::caution shall be taken to insure that the spi~•ot end of the l::i._:?:; be i n~~ laid is pushed home into the Groove of the pres. dir.G ?ipe. derrick w.it. un apr~r.oveci hoist-~n~; lift and hook shall be used to lo~~~er concrete pipe into the trench. In earth e;ccavatior~, unless oth~rr-rise specified or ca.ll.ed for on the plans, the bottom of the trench shall. bs neatly fo.rr~!er1 'to fit •the contour of the pine. Should the trench not be excav~<;~ted neatl;r, all slaace below the pipe must be filled yritl~ class "C" concrete, extendin~ up around the skies of the pi?~e so that the lower ~thirr'.. o.f the pipe is supported its er.~-ire lenGt~., and the cost of such concrete bedding shall be included in the contract unit price for -the sevrer complete in place. In rock, shale, or~rlYy unyi eldin~ rnate~°ial, or ~;rher~ caL.ec_ for on the plans, or where ordered by tl!e 'engineer, tl'ie bettor: of tl,.e ~~ rei_ch shall. be excavated at least three inches (3",l below ~thc bot"o;~1 of tl~~e p~._;~e, and the F;ir~e shall then be bedded in class "C" ooncrete extsnrlinG up around firs sii.ies of the pipe so that the l.ovrer third of the pipe is supported. its entire lengti!. Payment for such concrete badding shall_ be m~rde at the contract unit 1~~°ice for concrete bedding; set forth in the proposal. Ton~~;ue and ~fraove pipe shal_1 be laid ~.~iti'_ tY!e ~~r. oa~re erid. rzostream. The tcroove e!~d of the first pine shall be. t;l!orou~;h:r_y c1_eane;z, anti a layer of bitu- minous jointing; compound arr.E~l~_ai;i to ti~!e lo-~cer ha1.f of the ~:roove. The tonguc- encl of the :next; pipe. shall then be ti~oro~.~.;171J cl~anec~. and a layer of the compound applir~d to the ~_tpx~er llZlf of tY!e ton~~ue. 7'iae tor-:>~,~e end of the second pins mall tl!en 11e yI"lse;7't~d -1l~t•O the i;Y'OOtTe GnCI O:!~ tl.i?•.... ~rSt p1'~~ i h 1 OI'ne. ant. s..ovec_ h s - 7