Question

A truck has a rated struck capacity of 8 cubic yards per hour. The soil has a fill factor of 1.1. Operational efficiency is 45 minutes per hour. The truck has to travel 15 miles to the borrow site to get the dirt for the project. Its average speed is 45 mph empty and 35 mph on the return trip when loaded. It takes 3 minutes of fixed time to load and unload the truck. What is its hourly productivity? Productivity = (Load Volume) (Operational Efficiency) / Cycle Time LV = (BC)(FF) OE = minutes worked per hour CT = FT + VT VT = HT and RT each = D/(R*88) HINT: This relies on feet, not miles. Convert miles to feet.

Answer 1