1963 825 Ordinance - Laserfiche WebLink

Home Browse Search

'~ l~~dATERBOUND ?i~iACADAD,I 2. I+.2ACAl~A?< FOUi~~ATIOi•~1: The macadam foundation sha11 be constructed of aa_r cooled slag hav:i.ng a true specific gravity of not less than 2.G0 and porosity not to elceed 2O~ by volwne, d; cubic foot of graded slags consolidated by siralring, must tiveigh not less than seventy pounds. The materi al shall 'oe prepared by being; passed through a suitable stone crusher and, broken approximately cubical in foim, of such size as v~ri.l1 pass through a screen zr~.th i.;hree inch square holes, and not pass a screen vrith one inch square holes and shall be entirely free from shales dust, or dirt. Material shall. be classified as Ydo. 2 Size, Ohio State llighrray llepartrnent Specifications. (b) 13ASt~~ • 1`daterbound ::~i~.cada.m is to be six inches in thi.cl.ness and i.s to be constructed in one cou:cse a,s spec~~iecl belov~~. On the prepared subgrade slag confo-rmirzg to INTO, 2 S:i_ze, Ohio State Highvray Specif:i_cations shal_1 be evenly applied. v-rith arr app:^ov°d mechanical spz•eade:r to such a depth that v-Yren tliorou~;hly rol_lecls ~r;or•~i~!g From curb to crown, and i'il"led with slag screenir~;s, iL u'r~.ll be the ~ch:i.cl•.~ness specified on the plans or proposal. ti~ri:tY?. the surface of the complete'. base coucs~a true to grade, elevation and cross section as s'riov~~n on the p1.a;-~s~ The material as above specified s1raL be s;aroad evenly over the surface of the rolled subg:ade in one course and ~t-,b.oroughl_y -rolled., ~;rorlcing in parallel i.ines, from curb 'to crown. P~~iechanical spreaders shall be used if of -i,~ae ~i~•i.~u uniform depth to courses. .~'~ter th7_s course has been co~nl~l.eted by roll.in~; to fire satisfaction of the vn~i_neer~ al.l voids .shat"I be fi~_1ed vrith sc~^eenings classified as 1'i-2,7, Ohio ;fate I?ighi~ray ~ipecii°icatiarls, pa.ss:i_i~g a 1;~2'~ screen, which ;hall be ti=rorl~ecl into foundation by a-t least t~~.ro appl~.ca~c:;_or..s, each layer of coarse screenins to be vro.rked into foundation by ti~.orou~;hly ro11:i_ng dry and -then sprinkling S'Lr1th v~rater. Subgrad.e sha1.1., if necessary., be protected. by plant>ing to support truclcs. If subgrade is dry and liar d t±r.e spreader in action may aporate upon t17e roLed earth beds pl_ank_ng being; reiro;red for such <<istanc•e for each load. i~1o material shall. be ci~,:tmz:,°d. e~~cept upon 2~~ planking anct a.ll sp:r~ad later by shoveling; into place in the base v+ro rlc. The b.se course shall not be rolled ~fhen the subgrade is soft or yield- ir~; or ~rhen the ~~o1Lrg; causes a grave-Like motion in the base course or subgrade. Ar~~~r irr. egul_ar. it~~ tb.at exceeds 3/8~~ ~,rhen t ested vrith a •ten foot straight ed~~e, that may develop durinr• 'the rolling shall be loosened and then re- filled yrith the same lcirid of material as a~~ove speci fled and main rolled as requ~_red a'oove . (c) RCLT~r ~: Ccmpression sha11 be obtained by the use of an approved tvvo vrheel drivTe ~?zacadanr type roller9 ti're:i_t`;hinE; not less than ten ~L-orLS vrith ~rorltirrg load. The roller shell 'oe operated longitudirraLy along the curb 13_nes, v~rorking then tovra.rds the center. C ~°os~r x°ol_linC slrall then be done to secure uniformitf in szzr:~face. Care r~azst be ~tal;:cn to avoid excessive croti~rn rolling that v°rill deform the cross sec-tiorz. The eds~<;es must be fi:c:inly bound a-t the fi:c~t operation of -roller. (d) Dp~lI'H: The ~~racadam :ounclati on s'r,all_ after i.~aving been thoroughly rolled fil:Ledy and surfaced. as specified ha;re a thicl~:ness of depth of at :least 6" vrith its top surface as speciri~l. -to elevation given, ~~rh:Lch shall. be the spec:if'ied thiclrness of tyre peraizanent paver.ent belo~~r finished grade TR - 2