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Protect Pikeview Quarry <br /> Date Dec-2019 <br /> WORKSHEET NO.12B <br /> PRODUCTIVITY AND HOURS FOR MOTOR GRADER USE--GRADING <br /> Earthmoving Activity: <br /> 6 Upgrading of roads <br /> Characterization of Grader Used(type,size capacity,etc.)3 <br /> Caterpillar 160H <br /> Description of Grader Route(push distance,%blade effective length,operating speed,etc.): <br /> 11.9 Ripper width[ft] <br /> Productivity Calculations3. <br /> Contour Grading: <br /> Hourly = 3.4 mi/hr x 9 75 ft. x 5,280 ft/mi/ 43,560 ft2/ac x 083 x 0.90 = 3.0 ac/hr Hours = 121 ac / 1.00 ac/hr = 121 hr <br /> Productivity speed effective conversion conversion work availability Required acreage to be hourly <br /> blade factor factor hour graded' productivity <br /> width factor <br /> Scarification: <br /> Hourly = 1 25 mi/hr x 9.75 ft x 5,280 ft/ml / 43,560 ft2/ac x 0.83 x 0.90 = 1 1 ac/hr Hours = - ac / 1.10 ac/hr = hr <br /> Productivity work scarifier conversion conversion work availability Required acreage to be hourly <br /> speed width factor factor hour ripped" productivity <br /> factor <br /> Total Hours = 121 hr + 0 hr = 121 hr <br /> Required grading hours scarification <br /> required hours <br /> required <br /> Data Sources. <br /> 1) Acres from Worksheet 3 <br /> 2) Hours required go to Worksheet 13 <br /> 3) Caterpillar Performance Handbook,Edition 37 <br /> 'No Ripping on Topsoiled Areas <br />