D A 2-yd (L $3-m') dragline is being used to excavate a canal in common earth....
A small hydraulic backhoe excavator will be used to dig a trench (see the figure below) in hard clay. The excavator has a bucket of 3/4 cu yd. The maximum digging depth of the excavator is 4 ft. The average swing angle is expected to be 90 ° Estimate the hourly trench production in linear feet ifjob efficiency is 70%. 1. 100 ft A2 2 ft 2 2 ft Ai 3 ft 2 2 ft
A small hydraulic backhoe excavator...
Please solve problem 1 and show formulas used
Tables for reference:
Homework 6- Chapter 9 Problem 1: A crawler hoe having a 2 -cy bucket and whose cost per hour, including the wages to an operator, is $109 will excavate and load haul units under each of the stated conditions. The maximum digging depth of the machine is 22 ft. Determine the cost per bank cubic yard for each condition. (Condition 1: 315 bey/hr, S0.346/bcy; condition 2: 289 bey/hr, S0.377/bcy;...