A small hydraulic excavator will be used to dig a trench in hard clay (bucket fill factor = 0.80). The minimum trench size is 26 in. (0.66 m) wide by 5 ft (1.53 m) deep.

The excavator bucket available is 30 in. (0.76 m) wide and has a heaped capacity of 3⁄4 cu yd (0.57 m3). The maximum digging depth of the excavator is 16 ft

(4.9 m). The average swing angle is expected to be 85°.

Estimate the hourly trench production in linear feet

(meters) if job efficiency is 70%.