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feet long and two nomin rt~ at flarger ive-footintelrvals with spacers or be fi led t the spring <br />carrier pipe shall be suppo <br />line with washed sand. The encasement pipe shall be centered on the crossmg and both ends <br />sealed with cement grout or manufactured seal. <br />D. Location of Fire Hydrants <br />Fire hydrants shall not be installed within nine feet vertically or horizontally of any <br />wastewater main, wastewater lateral, or wastewater service line, regazdless of construction. <br />E. Location of Potable or Raw Water or Suction Lines <br />Suction mains to pumping equipment shall not cross wastewater mains, wastewater laterals, <br />or wastewater service lines. Raw water supply lines shall not be installed within five feet of <br />any tile or concrete wastewater main, wastewater lateral, or wastewater service line. <br />F. Proximity of Septic Tank Drainfields <br />Waterlines shall not be installed closer than ten feet to septic tank drainfields. <br />Floatation of Structures or Pivelines <br />This CONTRACTOR shall exercise the greatest of care to prevent the displacement of any <br />structure or pipeline by external water pressure. All such displacement shall be corrected by this <br />CONTRACTOR at his expense, the ONTRACTOR'S expensen, the displaced <br />structure or pipe sha11 be removed and rePlaced at <br />Every concrete structure shall be provided with an adequate opening (properly water-stopped) to <br />permit entrance of groundwater during construction, or an approved relief valve. <br />Upon completion of the structure's backfill, and before placing the unit in service, these anti- <br />floatation openings sha11 be properly plugged. <br />All pipelines shall be immediately "blinded-in", and at least partially backfilled, to prevent <br />floatation. <br />Unlike Pipe Connections (ARC) <br />Gravity lines of unlike material, of differing O.D., or incompatible type joints, shall be connected <br />with a banded-coupling style adjustable repair coupling (ARC) with stainless stiffener and <br />staintess steel bands, as manufec os~cted of ma erialsomeetingrAS~TM C-594 or C-425 rs shall <br />be of the banded-coupling styl , <br />Pressure lines of unlike material, differing O.D.'s, or incompatible joints, shall be connected with <br />a standard fitting of like materials as specified for other fittings on the same line, unless a special <br />fitting is called for on the drawings. Where standard fittings are not manufactured for the <br />89 <br />