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J <br />SPEC IF ICAT IONS <br />-------------- <br />CONCRETE SIDE~:~ALhS <br />7_. CFRADING: Excavation of subgrade ?nust be rude to lines- indicated by stakes set <br />by the Engineer and shall include remo~tal of all earth, loam, shale, rock, roots, <br />briars and Lindergrotiath. Contract price for excavation shall include removal <br />and disposal of all excavated material including 'removal a.nd disposal of all <br />trees up to tz~relve inches in diameter measured one foot above the ground; trees <br />larger than t~r:relve inches in diameter shall be covered iaz a sepa.ra.te co,ztrac+~ <br />item. All sponge ma.teri al shall be removed.. Fills are to be made 1r~Tith ;ravel <br />or other material acceptable to the Engineer. <br />The. contract price pe.r cubic yard of exca.v~:.ta_en r!us~t include a)_1 costs <br />for the removal and disposal of material of all hinds and the rolling and shaping <br />of graded surfaces. All ma::.terial moved., ti,rill be meas~.~red in place excavated by <br />the method of ~;verage end sections on fifer foot (50~) sta.tions, plus the yard- <br />age, measured in place, oa. a.ny excavation below sub~,rade ordered by t_rle Engineer <br />to be removed <br />2. i~iATFFLIALS <br />(a) AIR-~EIdTRAIITT-;dCr PORTiAIdD C.t~:ENT: The cement used in ready ~lix concrete for <br />sideti~rallcs shall be of approved brand and shall meet the requirements of the Teal- <br />tative Specifications ~'or Air-Entraining Portland Cement for Concrete Pavements <br />of the American Society for Testing P~iate.rials, Designation C-175. The Tensile <br />strengfli rcqui rements shall. govern. _ <br />(b) SAND: Conca^eto sand shall, be composed of clean, hard, durable particles of <br />stone, uncoated V~rith cla~~r or organic matter and free from lumps of these materials <br />Yt shall con:~orm to the ;f:'ollot~d2ng requirements for grading: ` <br />Pas s in 3/5" sieve 100 <br />Passim; No. 1~. sieve from 95;J to 100N <br />Passing No. 16 sieve from !+5 ~ to 95 <br />. Passing l~Io. 50 sieve fj~om 10~ to 30j~ <br />Passing Tito. 100 sieve from 2; to, l0yo <br />Clay 2c Silt, by weight not over 3ia <br />exceed 12 <br />Size : ' Coarse aggr. ega.te shall be mecha.n.icall;T crushed and screened into <br />No. 1~6 size, Oliio State FIigl~way S~pecificatians <br />Passing 1" Square sieve 1005 <br />Passing 3/I~" Square sieve from 95~ to 1G0~ <br />Passing 1/2" Square sieve from 65;o to 90~ <br />(c) COARSE AGGREGATE: The coarse aggregate shall consist of crushed limestone <br />having clean, hard, strong durable and un.coa.ted pa:rti Iles. T+., shall be free <br />from an injurious amount of soft, friable,-thin, elon7ated. or la.rinated particles <br />or pieces, a.J,kali, organic or other deleterious matter. The rnaxinum percentages <br />of such deleterious substances shall no't exceed lj' ,arhich can be removed by de- <br />canta.'tion nor more than ~~' in total, of coal, clay lumps, soft fragments, alkali, <br />friable or laminated pieces. <br />Physical Properties : The percenta;e of ~~Tear to be not over 6% and the <br />modified abrasion loss to be not over 22},`~, <br />Soundness : 'v`l~en tested s.n accordance ~.,rit17 the Tentative 1':iethod of Test for <br />Soundness of Aggregates by rJse o.f Soditun Sulfate, American Society for Testing <br />I~,taterials, Designation C-~~, the ti~~eighted average loss in ±"ive cycles shall not <br />S'T-•1 <br />