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<br />400-4
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<br />,-,!),;';"';';'snall' remain' ,SO' covered untll"removal is necessary for
<br />,.-+;;', ,,' connection of an adjoining Unit.
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<br />, As each length of bell and,spigot_pi~e is placed in laying
<br />"position, the spigot end shall be Qentered in the ~ell and the
<br />pipe forced home and brought to oor~ect line and grade. The
<br />pipe shall be secured in place with approved backfill material,
<br />which shall be thoroughly oompacted aroun,d the pipe, as
<br />described in Section 302.7. The joint areas shall remain
<br />exposed and preoautions shall be taken to prevent the soil from
<br />entering the joint space, until the:joint seal is ,effec~e4.
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<br />403.4
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<br />403.5
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<br />Whenever existing utility structures or branch connections
<br />leading to main sewers or to main drains, or other conduits,
<br />ducts, pipes, or structures present obstructions to the grade
<br />and alignment of the pipe, they shall be permanently supported,
<br />reJnoved, relocated or reconstructed by the, CONTRACTOR involved.
<br />In those instances where their relocation or reconstruction is
<br />impractical, a deviation from line and grade will be ordered,
<br />and the change shall be made in the manner directed by the
<br />ENGINEER and with extra compensation allo~ed therefore. All
<br />manholes will be set plumb. All openings a~ong the line of
<br />Sanitary Sewer shall be securely closed, as' directed, and at the
<br />suspension of work at any time, suitable stoppers shall be
<br />placed to prevent earth or any substance ~rom entering the
<br />sanitary sewer~ If water is present in the trench, the seals
<br />shall remain in place until the trench is completely dry. Where
<br />pipe cannot be placed by ope~ trench excavation, the method for
<br />placing and payment therefore shall be stated in the "Spec-ial
<br />Conditions" section.
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<br />When watermain, water services and sewer services, whether
<br />l~wered or existing, are in danqer of freezinq due to the
<br />proximity of'storm sewers, catch basin leads, or storm sewer
<br />structures, the ENGINEER may direct ~the placement of insulation
<br />between the'storm, sewer and the watermain or service pipe, as
<br />spegified in' sec~ion 303.9.
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<br />~ointing
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<br />Before laying the: pipes, the outside of the spigot and the
<br />inside of the be!;l shall be wiped' clean and dry. pipe ends
<br />'shall b. kept cle~n until 'joint.s are made.
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<br />compression joint$,. for vitrified olay pipe shall be installed
<br />in accordance witl1 A.S,.T.II. Designation C-12.
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<br />Sewer sezyices
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<br />'Sewer service connections from sewers shall be 4~t C.I.S.P.
<br />(extra heavy) or 4" PVC, Cl~ss 150. Existing sewer services
<br />, :shall be connected to the new sewers, as shown on the plans and
<br />,this item' shall be incidental. If the top of the main sewer is
<br />eight feet or less below stre~~ grade,. .horizontal wye branch
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