Problem
A limestone formation with an avulse depth of 5 ft is aposed over the full 80-ft width and 23.700-ft length of a highway cut. Preliminary seismic investigations indicate that the rock layer has a seismic velocity of 5,500 fps. The contractor proposes to loosen this rock by using a single-shank ripper on a power shift track-type tractor. The job coodificos relative to lamination and other rock characteristics me average, or midway between adverse and ideal. A 40-min hour westing efficiency is possible. The contractor wishes to explore the use of two 370-hp dorms. OW cost for the tractors in this ripping application is $126.00 per hour including rippers. The operator's wage is $14.30 per hew. What is the unit cost to rip this rock? What will be the total cost of the work and how many hours will the project require? (unit cost S0A39 per bey, total cost $153.997. time with two deems 405 hr)
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.