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Sufficient jointing compound shall be used to cause the compo>nd to be squeezed
<br />out on the interior and exterior surfaces of the pipes tivhen the pipes are shoved
<br />to~;ethcr, ar}d all of the annular space of the joint must be completely filled.
<br />The joints shall be tro~~elled smooth, on both interior and exter~.or surfaces of
<br />the pipe, ~,~~~ucut the~.r circumference.
<br />In applying' the bituminous jointinl_• compound, no admixtures of any kind,
<br />such as cement or sand, shall be added to or mixed ~.~rith the compound. The corr!-
<br />pound shall be prepared or mixed strictly in accordance 1~vith the manufac~ur~r's
<br />directions. Propep precautions shall be taYen to prevent water, mucl, fresh
<br />concrete, or other fone~gr! substances from coming into contact with the joi.nti.nz,
<br />compound during, jointing operations . t',ll Wipe joints mast be dry wher! the
<br />compound is applied.
<br />Previous to being- loin*ered into the trencY-,, each pipe shall be carefully
<br />inspected and those not rr~eet:i.n~ the specified requirements shall be either de-
<br />stroyed or immeciiately removed fro_~~ the site of the work. Pipes having minor
<br />defects not sufficiently s:~rious to cause rejection shall be so laid as to bring
<br />such defects in the top half of the: server. ido x•~ipe shall be laid v~rithin ten
<br />feet of the machine excavating the- trench nor vrithin forty feet of any place
<br />where blasting is being dor~2.
<br />The trench space each side o:C the ni_pe, and for a dist:~nce of tv~relve inches
<br />(l2't) above the top thereof, shall be backfilled tifrith suitable fire earth, slag
<br />or bank sand and thorou,.:•hly compacted bef ore an3r backfillin~, by machinery is
<br />allowed.
<br />6. UUfsL Su+ER C0115TRUCTI~i~e
<br />(a) CaLl'~':Rz~h: In the construction of dual sewers, the sanitary and storm sev~rers
<br />shall be constructed as above specified for. vitrified pipe and concrete pipe, or
<br />as shown on the plans. The sanitary se~~rer trench outside the pipe shall_ be• ccm-
<br />pletely filled v~2th class "C-" concrete, ~vi.th a rainimrrr~l. of three inches (3") of
<br />concrete beloti^r the bottom of the ~~ip~:, and a ;~-Lnimt!rn of six inches (6") of con-
<br />crete on each site of the pipe, and extendin~• u1~ to the bottom of the stn:~nr se~~~i.:_~ .
<br />The storm sewer pipe shall be laid bn a cradle o~_' class "C" concrete, with a
<br />mi nimtun of three inches (3") belov~~ the bottom o.f tl'ie pirse, and extending up
<br />around the sides of the pipe to the J.ir:i_ts sho-~Jri on the plans. If' the sanitary
<br />or sj;orm sewer trench is excav_:tt=d b:~1oJ^r ur bejrotld the limits above specified,
<br />the entire space so excavated shall be filled v~rith class "C" concrete.
<br />In dv.11 sevver construction, the sanitary and storm seti~~rers shall be 1_aid with
<br />a horizontal diatance of eight incr:os (8") betv:een the outsic?es of th.e pipe
<br />barrels.
<br />The sewer trench shall be b~icl.filled with ine earth, slag or bank sand and
<br />thoroughly compacted, ~to a heiY'ht of t~-relvc :ruches (1?_") above the top of the
<br />storm sewer, bef ore any b~~.ckfi)_ling by !uachiner_y is all_o~rred.
<br />In pl_acin~; concrete cra~~_l_es or :Ci1_l, the ~;rothod.s used sr!all be such as to
<br />prevent mucl, earth, clan or other foreign mat Sri als r'roai~ becorrin~; mixed r;~rith the
<br />concrete.
<br />I!7 no case shall "dry-mix" concrete be ~~laceci in the trenc'r! ~,~rithout permis-
<br />sion of the Engineer.
<br />^the cost of concrete bedding' or encasemer!~t f'or dual sewers shall be included
<br />in the contract unit price ;:;:zid f'or sewer, and_ no addit;_anal compensation will
<br />be alloyed for tf_is i~tern..
<br />7. Br~.Gl~FI:r~LIdG:
<br />(a) E,XTEi^lT OF B_.C~F'ILL: Tize bacrcfilJ_in` irZClucc,s all b~:~.ckfillin~;, ram!ning,
<br />puddling or -roll.inY; as required, tl!e .res;rad-i rrg o:E aci;jace!~.t di sturbed areas, the
<br />replacing of drains and other su7°face and subsur{'ace =~t-r~;.ctur;=s, the plarin~; and
<br />maintaining of t::mporary sidewalks and driv~~^ro, f s, ui~n ~_sh in~• of suitable bacl:-
<br />S-,8
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