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<br />203.13 <br />When scarifying is specified [he motor grader shall be equipped with an independently <br />operated "V"type scarifier and attachments. <br />203.12 Dozing. Dozing shall consist of famishing crawler-type tractors of the <br />specified horsepower rating, complete with operators and bulldozer blades. Rippers, <br />if specified, will not be measured and paid for separately, but shall be included in the <br />work. <br />METHOD OF MEASUREMENT <br />203.13 Items paid for by volumc will not be remeasured but will be the quantities <br />designated in the Contract. Exceptions will be made when 5eld changes are ordered or <br />when it is determined that there aze discrepancies on the plans in an amount of at least <br />plus or minus two percent of the plan quantity. <br />(a) Excavation. When payment is specified on a volume basis, all accepted <br />excavation and borrow will be measured in its original position by cross- <br />sectioning [he azea excavated. These measurements will include authorized <br />excavation of rock, shale, muck, or other unsuitable material. All accepted <br />stripping will be measured in stockpiled locations by cross-sectioning. <br />When the excavation conforms to the staked lines and grades, the original cross- <br />. sections and the staked sections shall be used for the determination of volumes <br />excavated. Volumes will be computed from the cross-sections by the average end <br />area or other acceptable method. <br />When topsoil or wetland topsoil is included as a pay item and is specified, the <br />measured volume of excavation will be reduced by the volume of topsoil or <br />wetland topsoil removed from the azea shown as excavation on the plans. <br />Measurements will include over-breakage in rock excavation from the <br />backslopes to an amount not to exceed, in any half station of 50 feet, 10 percent <br />of the actual quantity required for that half station. <br />(b) Embankment. If provided in the Contract, embankment material will be <br />measured in its final compacted position in the roadway. Measurement will be <br />made upward from the original ground line without any allowance for subsidence <br />due to compaction of the base under the embankment. The original cross- <br />sections will be used for determination of volumes of embankment material <br />placed, unless changes have been directed. <br />The measured volume of embankment material will be increased by the volume <br />of topsoil or wetland topsoil removed from the area below the original ground <br />line and under the embankment, only when the topsoil or wetland topsoil is <br />designated to be removed within the roadway prism. When the topsoil source is <br />not designated in the Contract, embankment will be measured from [he original <br />ground line. <br />• <br />147 <br />~~ <br /> <br /> <br />