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<br /> 404.03.10 Spreading,Compacting.and Finishing. F the finished
<br /> mixture. It ;ssary, all compressed masses of mixed materials shall be mixture is spread for compaction,a triangular cut shall be n_..e with a motor
<br /> broken up.` gradcr at each edge of the base course to provide for a thickened edge of
<br /> When the mineral aggregate consists of the existing material on the roadbed bituminous mixture.The cut shall be approximately two(2)in he.s deep at the
<br /> and an allowanecfor additional mineral aggregate has not been prop Wed for outer edge and slope to zero(0),two(2) feet in toward the center. In making a
<br /> on the plans, additional mineral aggregate may be obtained by scarifying cut the excavated material shall be thrown to the edge of the roadbed in a
<br /> material from the roadbed as directed by the Engineer or,in lieu thereof,the l
<br /> small windrow against which the mixture shall then be spread.
<br /> Contractor may import suitable material 3�io additional compensation will be After roadmixing operations have been completed and the mixture has been
<br /> allowed for conforming to the above requircmenls, except that additional approved by the Engineer,the mixture shall be uniformly spread over the area
<br /> materials imported and added to that in place will be paid for as extra work as to be surfaced to the proper width and to such depth as will compact to the
<br /> provided in subsection 104.03, "Extra Work:' required thickness.The mixture shall be sprcad by means of a motor gradcr
<br /> The amount of material mixed in any one(1)day shall not be more than can meeting the requirements of subsection 404.03.01. "Motor Graders.—
<br /> be spread and compacted on tile m
<br /> e following day,provided,however,that when Segregation of coarse is fine particles shall he avoided;tad the mixture shat]
<br /> directed by the Enginccr, mixed material may remain in the windrow fora be free from lumps or pockets of coarse and fine material after spreading.
<br /> longer period. After the mixture has been Spread as above specified,a roximaicl the to,
<br /> In lieu of mixing the matcrial as above specified, a roadmixing machine or p p pp Y i
<br /> one-half(ih)of the material shall he removed by motor graders and placed
<br /> any equipment other than that required above may be employed which will into a windrow on one(1)side. The windrow shall he so placed that earth or
<br /> produce the completed mixture equal to that which would be produced by the other extraneous materials will not became intermixed with the windrowed
<br /> means above specified.The Department reserves the right to order the use of matcrial, shall then be resprcad over the entire surface by ai;crna[ing the
<br /> any equipment discontinued which, in the opinion of the Engineer, fails to windrow from one (1)side of the roadbed to the other and to the center and x r -
<br /> produce a satisfactory mixture, gradually decreasing the amount of matcrial moved, until the entire surface •,
<br /> The roadmixing machine shall be of the pugmill or auger type which picks has uniform texture and is smooth and true to cross section and rade and is
<br /> up the loose matcrial from the mixing area or it may be of the type which cuts F• H
<br /> a true plane in matcrial at a specified depth,leaving no loose matcrial in either uniformly compacted. purine o f the s and rolling,all lumps and f, se su,rics
<br /> shall be moved to the outside of the surface arca and disposed of,
<br /> case. Either type shall introduce the bituminous matcrial through a'metering All rolling, except the final finish rolling, shall be done with pneumatic- '
<br /> device at the time of mixing.The machine shall be equipped to provide fora tired rollers. The finish rolling steall be done with steel-tired t:mdcm or three �
<br /> positive controlof the amount of bituminous material introduced into the mix, I (3) wheeled rollers commencing at the lower edge, progressing toward the
<br /> which can be readily adjusted to the changes required. f highest portion. Under no circumstances shall the highest ortion he rnlle ,
<br /> The rate of movement of the roadmixing machine, the amount of the g p p
<br /> material mixed and the amount of mixing shall be so regulated that a mix i first.
<br /> satisfactoryto the engineer will result. The materials sha11 be mixed until a
<br /> g b 404.03.11 Miscellaneous Areas. Surfacing of road approaches roaches and con-
<br /> uniform mixture of unchans in appearance 8 'pP p $ nections, street intersection areas, frontage roads, median strip areas, island
<br /> is obtained and all articles of 1
<br /> aggregate are thoroughly coated with bituminous materials. Before mixing, ' areas,sidewalks,dikes, gutters,gutter fares, ditches, ovcrsidc drains, spill-
<br /> the loose materials shall be placed in windrows or in a blanket of uniform 1 ways,aprons at the ends of the drainage structures,and tnhcr designated areas
<br /> cross section and of such size that all the material in the windrow or blanket outside the travelled way shall conform to the provision% specified in thcsc
<br /> can be passed through the mixing machine at each mixing operation. k specifications.
<br /> Materials mixed off the roadbed shall be uniform in character and equal in The combined aggregate grading for bituminous mixtures placed on miscel-
<br /> .all respects to that which would be produced by mixing on the roadbed as y lancous areas shall conform to that specified for the bituminous mixture
<br /> above specified.
<br /> placed on the travelled way. The amount of bituminous material used in the
<br /> (h) Plantmixing Method. Should the Contractor elect to mix the materials bituminous mixturelaced in dikes, utters. gutter nares, ovcrsidc drains.
<br /> at a central mixing plant by the plammix method,the aggregate shall be mixed spillways, aprons at the ends of drainage structures, and other designated
<br /> with the liquid asphalt in accordance with the applicable requirements of x areas outside the travelled way shall be increased not less than one(1)percent F.
<br /> Section 401 of the standard specifications and these special provisions except t by weight of the aggrcgatc over the amount of bituminous matcrial used in the
<br /> that when the moisture content of the aggregate is two(2) percent or less by � bituminous mixture placed on the travelled way.
<br /> weight of the dry aggregate as determined by Test Method No. Nev.Ti 12I),
<br /> mixing of the materials without passing the aggregate through a dryer will he 404.03.12 Surface Tolerances. T he surface will be tested by the 1ngi-
<br /> permitted. neer using a twelve(12) foot straightedge at selected locations. The variation N
<br /> Unless otherwise specified in the special provisions, separation of tltc of the surface from the testing edge of the straightedge between any two(2)
<br /> mineral aggregate into required sizes and storing in separate bins will not be f contacts with the surface shall at no point exceed three one-hundredths(0.03)
<br /> required. I k
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