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Terror Creek Mid-Term - 6 - February 12, 1986 <br />Production Factors <br />Average Operator 0.75 <br />Job Efficiency 0.84 <br />Load Factor 0.75 <br />Material 0.80 <br />Productivity = 2,400 x .75 x 0.84 x 0.75 x 0.80 = 907 BCY/hr <br />2,000 BCY - 907 BCY/hr = 2 hours <br />Time Required = 2 hours <br />Final Grading <br />Utilize D9L crawler tractor equipped with "U" blade and double shanked <br />ripper <br />Production Factors <br />Average Operator 0.75 <br />Job Efficiency 0.84 <br />Job Condition 0.6 <br />Productivity 0.968 acres/hr <br />Productivity = 16' wide pass @ 1 mph each <br />= 0.97 acres/hr <br />Time Required = (9 acres - 0,97 acres/hr) <br />= 9 hours <br />Topsoil Replacement <br />Utilize two 627-E push pull scrapers <br />Cycle time according to Caterpillar Performance Handbood, Edition 15 <br />Load 0.8 mins Grade = 5% est. <br />Haul 1.05 Rolling Res. = 7, 5% <br />Manuever <br />& Spread 0.7 <br />Return 0.5 <br />yc~Te 3~5 <br />19.67 cycles/h r. <br />Production <br />20 yd3 heaped x .90 fill factor <br />= 18 BCY x 19.67 cycles/h r. <br />= 354 BCY/h r, x 0,84 <br />= 297.41 BCY/h r. x 2 <br />= 594.82 BCY/hr for pair <br />11,000 BCy - 594.82 = 18.5 hrs. <br />