1957 566 Ordinance - Laserfiche WebLink

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of trench shall be not more than two feet (2 ~) greater than diameter of pipe except by consent of the Engineer, (b) PIPE I~OUPIDATTON; Unless otherwise specified the trench shall have a flat bottom conforming to grad.e., so that the barrel of pipe shall have full bearing throughout itslength, If subgrade is soft and cannot support the pipe the objectionable subgra.de material shall be removed and replacE:d with .suitable fine earth o.r bank sand thoroughly compacted, all at Contractor's cost, Any past of the trench excavated below grade shall be corrected v:~ith approved material thoroughly compacted. (c) PIPE CZi~~1RA1`ICE IId IIOCI~; Ledge rocky boulders large stones and shale shall be removed to a clearance of at le~ist six inches (6") below all parts of the pipe, valves or :%ltti ngs, and to a clear ti^ridth of six inches (~~") on each side o.l' all concrete pipe and appurtenances, and nine inches (9") of cast iron and steel_ pipe and appurtenances shall be pro- vided, Excavations bc;lovr sub~;rade shall. be ref~.lled to subgrad.e vrith fine earth or bank sand thoroughlyr comppacted., all a~G Contractor-s cost. (d) BLASTII`1G PROCEDURE; Blasting for excavation tivill be permitted only after securing the tivritten ap}:roval from the '~'nga.neer who shall fix the time during which blasting ma~T be done and tirrhat protective measures must be used to insure safety to adjacent property. The Contractor shall be responsible for any damage resulting from transporting, storage or use of explosives in blasting. The Contractor's method of procedure relative to blasting shall conform to State laws and 'to local is4unicipal ordinances. (e) BELL rIOT~NS REQUL~wD: Bell holes of ample dimensions shall be dug in earth trenches at each joint to permit the jointing to be made properly. Adequate clearance for properly jointing pipe in rock or shale trenches shall be providecl at bell holes, (f) BRAG AND SII~aETED '1"_~rNCHES: 1-;11erever necessary to prevent caving, excavations in sand, gravel, sandy soil, or' other unstable material shall be adequately sheeted and braced ',There sheeting and bracing are useci, the trench width shall be increased accordingly. Trench sheeting shall remain in place until pipe has been laid, tested for defects arst ret_~airect, if necessary, and the earth around it compacted to a depth of one foot (1 ~) over tYie top of the pipe, Sheeting left in trench by order of Engineer Vrill be paid for at price bid per thousand (N) feet o (g) DRAINAGE: The Contractor shall., 1v'rien ordered by Inspector, construct tight bullcheads across trench and provide pumps suitable for the removal of any water which may be en'cot~ntered or V.~hich may accumulate in the trenches. In no case shall trench vrater be permitted to rise upon or flow through the vrater main. (h) EXISTIivTG ~-1ATER COURSES : In open israter courses, ditches or pipes encountered dtu^ing the progress of the z^ro.rk, the Contractor shall at his own expense provide for the protection and securing of a continuous flew in such courses or pipes and shall ropair any damage that may be done by reason of them. (i) ROAD SI1R1I'ACES, CURBING, DRIVEi~iAYS AMID S1vE'l~~rALKS: The Contractor shall remove all pavements, road surfaces curbing, driveways and side- _~~.