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• Mine Area Seneca II <br />Project Facilities - Perm Roads <br />Task Narrow Roads <br />NORKSHEET N0. PR-2 <br />PRODUCTfvITY FOR DOZER USE - GRADING <br />Dozing Activity: Push 30 -foot of gravel/scoria surfacing back onto road surface. <br />This Leaves the road 20' wide with approximately an additional foot of surfacing material. <br />A compactor will compact this material end a motor grader will shape it. <br />Dozer Used: D-11N, SU blade, 14G Motor Grader <br />Description of Dozing: 50' push <br />Volume: 1' x 30' x 46,800' = 52,000 cy <br />Productivity Calculations: <br /> Operator: 75 <br /> Grade: see EMF <br /> Material Factor: see EMF <br />• Push Distance: see EMF <br /> Doting Factor: see EMF <br /> visibility: 90 <br /> Altitude: 91 <br /> Dual Tilt: 105 <br /> Spoil Pile Factor: see EMF <br /> Minutes Worked per Hour: 50 <br /> Bank Material Density: see EMF <br /> Loose Material Density: see EMF <br /> Direct Drive Trans: 100 <br />Total Adj. Factor: 0.3349 <br />Net Hourly Production = 2803 yd3/hr x 0.3349 = 631 yd3/hr <br />normal hrly prod. op. adj. factor <br />xours Required = 65.424 lcy / 631 yd3/hr = 104 hrs <br />vol. to be moved net hrly. prod. <br />Cost per Hour = f236.22 (D11-N) <br />83.31 (14G) <br />0.60/cy for compactor <br />Total Cost = 104 hrs. x 5236.22 cost/hr = 514,524 <br />104 hrs. x f 83.31 cost/hr = 8,664 <br />• 5.060/cy x 52,000 cy = 31.200 <br />f54,388 <br />REFERENCES: <br />Table 13-2-5 <br />Attachment 13-2 <br />