Question

Excavation and removal of earth has to be done in a road project. One excavator with a 0.80 cy bucket and a bucket fill factor of 0.9, is used to cut the soil and load the trucks. A total of 5 trucks are being used for transportation of the soil. Each truck can transport 10 cy. The dump site is 30 miles away and the trucks travel at 40 mph, and have to travel 60 miles. The contractor is planning to complete 4 trips by each truck during the day.

The following time intervals are observed for the excavator operation:

a. Loading the bucket 0.2 min

b. Move the excavator arm-0.5 min

c. Dump the lad in the truck-0.1 min

FIND:

The time to load trucks

Capacity of the excavator bucket

Number of buckets to fill one truck

Total time to drop 1 bucket in the truck

Total time needed to fill 1 truck

Time required for a truck to transport the soil and come back

Find solution and include calculations (10 pts. each). 1. A. Excavation and removal of earth has to be done in a road project. One excavator with a 0.80-cy bucket and a bucket fill factor of 0.9, is used to cut the soil and load the trucks A total of S trucks are being used for transportation of the soil. Each truck can transport 10- cy. The dump site is 30 miles away and the trucks travel at 40 mph, and have to travel 60 miles. The contractor is planning to complete 4 trips by each truck during the day The following time intervals are observed for the excavator operation: a. Loading the bucket-0.2 min b. Move the excavator arm 0.5 min c. Dump the lad in the truck 0.1 min FIND: The time to load trucks Capacity of the excavator bucket Number of buckets to fill one truck Total time to drop 1 bucket in the truck Total time needed to fill 1 trucik Time required for a truck to transport the soil and come back

Answer 1

Tauck A4 totaltimt to dio? 02 o5 Total time needed 4o z 16.3 mn Thu time to 5 x 16.3 s) s 81 5 min 60ma) -total distance trade lled by-lu trace ะ 2x3。 , Seing, aetam

60 40 15 h Time ueniad fole, taUCK 10 soil 90. min