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 The average return speed will be 20 mph Assume, at an average speed of 5 mph that 200 ft is required to both accelerate and decelerate. The operating efficiency will be equal to a 50-min hour. It will take 0.80 min to load this scraper. distance,ft 88 conversion factor = Time, min. speed,mph x 88 Distance, ft. Speed, mph Time, min Haul 200 accelerate 5 500 14 200 decelerate 5 Return 200 accelerate 500 20 200 decelerate Travel time Travel time min Load time Dump time (see table 8.7) Turn time fill 0.21 Turn time cut 0.30 Total time min -

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 The average return speed will be 20 mph Assume, at an average speed of 5 mph that 200 ft is required to both accelerate and decelerate. The operating efficiency will be equal to a 50-min hour. It will take 0.80 min to load this scraper. distance,ft 88 conversion factor = Time, min. speed,mph x 88 Distance, ft. Speed, mph Time, min Haul 200 accelerate 5 500 14 200 decelerate 5 Return 200 accelerate 500 20 200 decelerate Travel time Travel time min Load time Dump time (see table 8.7) Turn time fill 0.21 Turn time cut 0.30 Total time min -

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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