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Yoast <br />Mine Area <br />Project Facilities - Haul Roads <br />Task Grading to Blend/Drain <br />YORKSHEET N0. HR•3 <br />PRODUCYIVITY FOR DOZER USE--GRADING <br />Dozer Activity: Grading the cut and fill to blend into the surrounding topography to <br />drain, end burial of the road su rf ate material. <br />Dozer Used: D-1TN, V blade <br />Description of Dozing: 200' wide x 2,400' long = 72 ac. <br />Productivity Caltuletions: <br />Operating: 75 <br />Grade: ~ see EMF <br />Material Factor: see EMF <br />Push Distance: see EMF <br />Dozing Factor: see EMF <br />Visibility: 90 <br />Altitude: 91 <br />Dual Tilt: 100 <br />Spoil Pile Factor: see EMF <br />Minutes Yorked per Hour: 50 ' <br />Bank Materiel Density: see EMF <br />Loose Material Density: see EMF <br />Direct Drive trans: 100 <br />Total Adj. Factor: 0.3380 <br />Hourly Production = _2 mi/hr 19ft x 5280 ft/mi z t ac/43560 ft2 4 ac/hr <br />speed. eff.blade Width <br />Net xourly Production = (_4 ac hr z 0.3380 = t.35 ac/hr xours = 12 ac/1.35 aclyr = 9 hr:;. <br />hrly prod, op. adj. factor. <br />Cost per xour = 5236.22 <br />Total Cost = 9 hrs. x 5236.22 cost/hr = 52.126 <br />REFERENCES: <br />Table 25-2-5 <br />Attachment 25.2 <br />• <br />• <br />• <br />25-4-12 <br />