A civil engineer has calculated that a new construction project requires 15,000 yd3 of fill with relative compaction of

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A Civil Engineer Has Calculated That A New Construction Project Requires 15 000 Yd3 Of Fill With Relative Compaction Of 1 (42.14 KiB) Viewed 39 times

A civil engineer has calculated that a new construction project requires 15,000 yd3 of fill with relative compaction of 93%. The closest borrow pit area has a soil with in-place dry density of 95 pcf and a laboratory maximum dry density of 118 pcf. What will be the total volume of the soil needed to be excavated from the borrow pit by the contractor? 12,983 yd 3 O 13,729 yd3 + O 17,329 yd3 O 19,283 yd 3 QUESTION 4 Determine the cycle time for a single-engine scraper rated at 21 cy heaped that is used to haul material from a pit to a fill 900 ft away under severe conditions. The average haul speed will be 14 mph and the average return speed will be 20 mph. Assume, at an average speed of 5 mph that 200 ft is required to bo accelerate and decelerate. The operating efficiency will be equal to a 50-min hour. It will take 0.80 min to load this scraper 2.51 min None 3.45 min 4.47 min 4.12 min