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-4- <br />% Light Use Road <br />D-SL Dozer with "U" blade <br />,I Unadjusted productivity 1600 lcy/h r. <br />i~ <br />,) Factors <br />.75 (Avg. operator) <br />.84 (efficiency) <br />.tiU (job condition) <br />25% swell <br />1600 x .75 x .84 x .60 1.25 <br />= 484 BCYhr. adjusted production <br />Tune = 3 hours <br />Final Grading <br />D-SL with "U" blade <br /> <br />Productivity .721 acres/hr. (12' wide pass l~ 1 mph) <br />Time = 33 hours <br />Topsoil Replacement <br />627-8 scraper pair <br />Factors <br />20 lcy capacity <br />Avg. speed: 7 mph <br />Load time: 3 min. <br />Oump time: 1.5 ~nin. <br />Spot tune: 1 ~nin. <br />Swell: 15% <br />Efficiency: .84 <br />Operator: .75 <br />Productivity per pair (4U lcy) x .9 x .84 x .75 - 1.15 <br />= 2U 8CY/7.8 minutes <br />= 15U 8CY/h r. <br />Time = 11,000 BCY _ 15U 8CY/hr. <br />= 73 hours <br />