Freight Capacity

Freight Capacity

 

the capacity of the load space of a railroad car, automobile, vessel, or aircraft. It is one of the fundamental performance criteria of means of transportation. The ratio of occupied load space to the freight capacity is called the freight-capacity use coefficient.

In ships a distinction is made between grain capacity (for bulk cargo) and bale capacity (for piece cargo). Excluding the area in the load space that is not suitable for storage, the bale capacity is 6–10 percent lower than the grain capacity.

An important factor is the specific freight capacity (the volume of load space per unit of freight capacity). The specific freight capacity of present-day covered railroad boxcars is 1.94–2.0 cu m per ton; of half boxcars, 1.08–1.16; and of tank cars, 1.02–1.14. For dump trucks the specific freight capacity is 0.6–0.7 cu m per ton.

Ocean and river vessels have various specific freight capacities, depending on their purpose. For ore carriers it is 0.5–1.0 cu m per ton; for bulk-load vessels and tankers, 1.2–1.4; and for general-cargo vessels, 1.4–2.2. The specific freight capacity of an An-22 airplane is 7.0–7.5 cu m per ton.

For open freight carriers (railroad flatcars and flatbed trucks) the specific freight capacity is expressed as a ratio of the area of load-carrying surface to the freight capacity. This index is 0.58–0.94 sq m per ton for railroad flatcars and 1.2–6.0 sq m per ton for general-purpose motor vehicles.

E. S. SERGEEV

References in periodicals archive ?
Air France-KLM - whose passenger aircraft currently account for 72 percent of total freight capacity compared with 54 percent in 2007-08 - plans to make a decision in a couple of weeks on whether to reduce its fleet of freighter aircraft further, chief executive Alexandre de Juniac said at the meeting.
Middle Eastern carriers have been responsible for over 37 per cent of the total increase in global freight capacity in 2014, Iata said.
9, 2014 /PRNewswire/ -- DHL Global Forwarding, the air and ocean freight specialist within Deutsche Post DHL, is responding to global trade growth with freight capacity initiatives designed to support customers in a challenging market environment.
They were credited with having more than a 37 per cent share of the global increase in freight capacity in 2014.
They have also been responsible for over 37 per cent of the total increase in global freight capacity in 2014.
One of the largest palletised cargo aircraft available in the market, the Boeing B747F will provide belly freight capacity and main cargo deck capacity with 39 ULD positions.
Haven, the private marketplace for buying and selling ocean freight capacity, is excited about this new partnership, which offers shippers a growing selection of port pairs.
In addition, Oman Air will provide Cargolux with access to the freight capacity of its passenger fleet, which flies to 11 destinations in India and three in Pakistan, as well as to destinations in Nepal, Bangladesh and Sri Lanka.
There will also be some joint work with the rail industry to make sure that there will be sufficient freight capacity.
This new version gives carriers greater flexibility in managing reservations, including flights with alliance partners, resulting in optimized freight capacity and minimized revenue leakage.
But a third set of locks is scheduled to open in 2015, doubling the canal's freight capacity and allowing it to accommodate larger ships.
7% increase in average freight capacity, reaching 77.