1. An earth moving contractor encounters a trap-rock formation at shallow depth ma cut. Seismographic tests widicate a s

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1 An Earth Moving Contractor Encounters A Trap Rock Formation At Shallow Depth Ma Cut Seismographic Tests Widicate A S 1 (42.99 KiB) Viewed 45 times

1. An earth moving contractor encounters a trap-rock formation at shallow depth ma cut. Seismographic tests widicate a seismie velocity of 5.500 fps for the material. On this basis, it is proposed to rip the rock with a 370 hp crawler tractor Estimate the production in bey, for Full-time ripping with efficiency based on 50 minutes hour. Assume that the ripper is equipped with single shank and that ripping conditions are average (ie, intermediate . between extreme conditions. The Normal Oco cost per hour, including operator, for a 370 hp tractor with ripper is $ 105. 95. This is classified as heavy ripping. Lising your entimale of hourly production, cetimate the rippuentroduction cost in doller for bey without operator. [20 points. I