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..~ <br />Passing 1!' <br />Passing 3/~n <br />Passing 1/2" <br />Passing 3/~jn <br />Passing No, ~. <br />Square sieve <br />Square sieve <br />Square sieve <br />SC1Llare sieve <br />sieve <br />. . ~ 100j <br />from 95 to 1000 <br />from 65 to 90i <br />from 35 ~ to 65~ <br />from 0`,'~ to 15; <br />All fragments must be generally cubica_1 in form, free from an ex_coss of <br />flat, thin fragments and contain na shale, silt, clay or forelL,n substa.tices. The <br />voids in loosely placed agg-rega.te shallr;ot exceed fortf fri,ve percent. <br />2 . CI?R,L~ Di~4'1NS <br />(a) Yrli;: Before the irsta.lla.ticn of curbing, marginal rlrains of ~!." vitrified <br />scorer pipe, hub and spigot pattern, con:for~rinL; to all the requir. ernents of. the <br />"Sl~ecifica.tions for. Sta.nda.rd Strcn;th Clay ripe" A.S.T.~'~.. Designatici! C-13 and' <br />shah_ bc; la.id to a true line and grade. <br />(b) B ~AVATTOT; : A trench shall be ez>cavated in _.cco~~•U.ance Tr~.th detai 1 plans of <br />c~!rb a!~d drain, The marginal dra~xi s'r!a11 be cents%•ed in the _rea.r 8" of the <br />trench The soil at the bottom of the trench shall be shaped to Live full support <br />to the lo~~•.~er r..±u:~.rtar of the pipe. Care shall be used to excavate bell holes and <br />in a.11 c~~ses ''F'irst Class" bedding grill be. rer~uired. <br />(c) COi~tSTRUCTIOiVT: Joints in bell and spigot. drain pipe shall be an•a.nped v~.th a <br />strip of coarse burlap 8" z~ride and long enough to encircle the pipe and leave a <br />lap of ~" ~,vnich lap must co_~e on top of the pipe. After la~-inL the p~.pe and <br />p?°operl~~ protecting the Joints as above spec'~fied the trench shall be f i llecl vlith <br />ldo. ~.6 broken stone or Sla( to ~°:rithin 1~" of tl~e su~~fa.ce of the ground, Tl~!is <br />fillinL must be carefully and thoroughly t~!mped anc~. ram~~~ed. as placed, special <br />care being taken to urorl< the filling a.ro~znd tree pipe. `the re!naina.ng ~." shall be <br />frilled ?:~~ith fine earth. <br />All drains shall 'oe connected to by means of a ~." vitrified seurer pipe <br />curve and 1i." vitrified sourer pipe. <br />(d) COST : The contract ~-~!°ice per linear foot of curb rlrair_ shall include all <br />costs of Wipe, evca~rstio!1, bedding, placinb and joi~!in.g the pipe, connection to <br />ca.tchba~ins, baclcfilli.n~, incl~zding porous material and earth, and -L-he disposal <br />of all surplus exc~~.•vc ted material. <br /> <br />(a.) Cl~i~rE2~'LI,: In the trench, excavated far curb c1.rai_~, as heretofore specified, <br />concrete curb sl~al_l_ be inst~.ll~d after the drain 1!as been ronst?~ucted. Gurb sl!all <br />be installed on a base of ~" of thoroughly co::!parted AJo. i~6 bro'_cen sto!7C or s? ~.~; v <br />(b) Cr1; T -IN--PEACH COl~1C? H,T.t~ CITi'u; : Cast~in-p:l_<~ ce curb shal_1 have a uridth of 6" a.t <br />t'-~.c top, a ti~ridth of 7 1/2" ~:.t the bottom, and ~:~ depth of 18" u~rith the front face <br />c~~' ~a nL~'^b on a batter or incline from verticle of 1 1%2" in 1~". The upper i:r~,,!i: <br />co.~i~er ~:~-~. curb shall have a bullnose t~rith the front face oa curb set on ;ic. :_~ ~.!,; <br />Of• pa v'e:'!!ant o <br />(c) ~t~ADI'-~I:~1TX COT~?Cl~i;TE: Only ready-mix cencrete ~^ri11 be allo~~red on cast-._~•.~-~l.a.cc: <br />curb, in trlis operation the cement, sand and. lir.~eston.e shall be loaded a.. ~. ~^~ix~d <br />ti~rith ura.ter addedt The concrete shall be tnoroug!!]J :~_lxed in a batch t~n~~e mixer <br />of approved t~Tpe for at least one and or!e-half !ninutes.. The concrete mixture <br />C-~ <br />