Small cube Aggregate Hopper Cars range from 2,400 to 2,600 cubic feet cars.
Large cube Hopper Cars or Gondolas range from 6,800 to 8,160 cubic feet cars.
Cars built for gross rail load requirements of 263,000 lbs. or 286,000 lbs.
Small cubic foot Aggregate Hopper Cars:
Unloading Gates: Manual discharge or automatic air operated discharge gates are available as well as specialized manual and automatic gates for center and side ballast discharge.
Large cubic foot Hopper Cars or Gondolas:
Unloading: Rotary dump and overhead crane load extraction are possible with a gondola design and unloading discharge gates are possible with the hopper design.