Question: A hydraulic excavator-backhoe is excavating the basement for a building. Heaped bucket capacity is 1.5 cu yd (1.15 m3). The material is common earth with a bucket fill factor of 0.90. Job efficiency is estimated to be 50 min/h. The machine's maximum depth of cut is 24 ft (7.3 m) and the average digging depth is 13 ft (4.0 m). Average swing angle is 90°. Estimate the hourly production in bank measure.