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CIRCES Cost Estimating Software <br />Task description : Fllllsh-grade topsoil borrow area <br />State :Colorado Permit/job # : C-87-035 <br />County : La Plata Abbreviation :none <br />Site :King 1 Mine Filename :C035-020 <br />Agency or organization name :Colorado Division Of Reclamation, <br />Permit or other job action :Permit Renewal RN-05 <br />Source of estimated acreage :Map C-6 <br />HOURLY PRODUCTION <br />Selected application : Finish grading (0-2.5 mph) <br />Average grader speed : 1.25 mph <br />Selected blade angle : 30 degrees' <br />Effective blade length : 10.40 feet <br />Width of blade overlap per pass : 2.00 feet <br />Net grading or ripping width per pass : 8.40 feet "" <br />Unadjusted hourly unit production : 1.2727 acres/hour <br />* at 0 degrees, blade is perpendicular <br />to direction of travel. <br />•' width of ripper beam on ripping applications <br />Job Condition Correction Factors <br />Average site altitude : 7,400 feet Altitude adjustment factor <br />Job efficiency adjustment factor <br />Net job correction <br />And Safety <br />Source <br />0.83 (Cat HB) <br />0.85 (1sh/d, mod.) <br />0.7055 multiplier <br />