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1 <br />1 <br />1 <br />_, <br />i <br />l <br />i <br />Crusher building (75x70) 5,250 ftz <br />Screening Building (60x50) 3.000 ftz <br />Total 5-Inch Floor Area 8,250 ftz <br />5 inch floor removal costs are estimated at $2.59/ft2 <br />Total 5-Inch Floor Removal Costs $ 21,368 <br />C. R1Dplna Mill Area <br />D-7 dozer can rip approximately 2.5 acres/hour. <br />Total area requiring ripping is 16.0 acres. <br />16 acres/2.5 acres/hour = 6.4 hours <br />D-7 dozer at 590/hr x 7 hr = $ 630 <br />D. Grading Mill Area <br />Assume top foot will be graded over 23.5 acres including <br />outslopes. <br />43,560 ft3 x 1 yd3/27 ft3 = 1613 yd3/acre <br />23.5 acres x 1613 yd3/acre 37,906 yd3 requiring grading <br />Using a D-7 doer with a U type blade. <br />Average push d;stance is 50 feet. <br />Production from the Caterpillar handbook is 1,25C yd3/hour. <br />Job efficiency is 0.83. <br />Slope adjustment is 1.05. <br />No altitude adjustment is necessary. <br />Adjusted production is 1,089 yd3/hour <br />37,906 yd3 x 1 hour/1,089 yd3 = 34.8 hours <br />D-7 Dozer at $90/hour x 34.8 hours = $ 3,133 <br />E. Toosoil Replacement <br />For 1.5 feet of topsoil replacement will need 56,870 <br />L-15 <br />(Revised 4/20/89) I <br />(Revised 3/14/89) <br />