Pressure exerted on the ground by the tires or tracks of a motorized vehicle
Ground pressure is the pressure exerted on the ground by the tires or tracks of a motorized vehicle, and is one measure of its potential mobility,[1] especially over soft ground. It also applies to the feet of a walking person or machine. Pressure is measured in the SI unit of pascals (Pa). Average ground pressure can be calculated using the standard formula for average pressure: P = F/A.[2] In an idealised case, i.e. a static, uniform net force normal to level ground, this is simply the object's weight divided by contact area. The ground pressure of motorized vehicles is often compared with the ground pressure of a human foot, which can be 60 – 80 kPa while walking or as much as 13 MPa for a person in spike heels.[3]
Increasing the size of the contact area on the ground (the footprint) in relation to the weight decreases the unit ground pressure. Ground pressure of 14 kPa (2 psi) or less is recommended for fragile ecosystems like marshes.[4] Decreasing the ground pressure increases the flotation, allowing easier passage of the body over soft terrain. This is exemplified by use of equipment such as snowshoes.
^Allen, Jim. Jeep 4 X 4 Performance Handbook. MotorBooks/MBI Publishing Company. p. 16. SBN 076030470X.
^Wenger, Karl F. (1984). Forestry Handbook. New York : Wiley. p. 499. ISBN 0-471-06227-8.
^J. William Thompson; Kim Sorvig (2000). Sustainable Landscape Construction: A Guide to Green Building Outdoors. Island Press. p. 51. ISBN 1-55963-646-7.
^"Page 4 of Management of small dock and piers, best management practices, May 2005 NOAA" (PDF).
Groundpressure is the pressure exerted on the ground by the tires or tracks of a motorized vehicle, and is one measure of its potential mobility, especially...
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard...
and equipment through snow and bog-lands in northern Sweden. The low groundpressure enables the Bv 206 to cope with a wide range of difficult conditions...
wheel travels, pressure exerted by springs within it increases the number of feet in contact with the ground, thus reducing groundpressure and allowing...
produced groundpressure of 14 pounds per square inch. U.S. crews found that on soft ground, the narrow tracks of the Sherman gave poorer groundpressure compared...
Although the machine weighed 30 tons complete with 6 tons of fuel, its groundpressure was only 869 kg/m2 (178 lb/sq ft), considerably less than a man. The...
are typically faster on road and less expensive, however have higher groundpressure which decreases mobility offroad and makes them more likely to become...
have less surface area in contact with the ground when compared to a tracked vehicle. Higher groundpressure results in an increased likelihood of sinking...
(61.5 kW) Volvo B18, the MK2 by the 97 bhp (72 kW) B20. It has less groundpressure than a skier and is fully amphibious. The Bv 202 was used by NATO forces...
the mobility of wheeled vehicles by spreading their weight, reducing groundpressure, and increasing their traction. Experiments can be traced back as far...
including recharging with refrigerant; by plumbers conducting leak-down pressure tests on pipe installations; as a bleeding and test port on the fuel rail...
damage to the pipe. A low groundpressure version is also available with extra wide tracks to provide low groundpressure which allows working in muddy...
(FV) or Sclaverand valve) is a type tire valve commonly found on high pressure bicycle inner tubes and is commonly used on tubeless setups. It comprises...
speed and on high tire pressure, but retains the ability to provide grip on a soft or loose surface- lower tire pressure or soft ground will cause the side...
steel girders, which apply a higher groundpressure than the tank's tracks. This ensures the explosion of pressure-fused anti-tank mines, which would otherwise...
(decreasing groundpressure), thus preventing it from sinking in sandy or muddy ground. Extra-wide tracks are known as swamp tracks or low groundpressure (lgp)...
Pressure measurement is the measurement of an applied force by a fluid (liquid or gas) on a surface. Pressure is typically measured in units of force...
(97 mm) or larger and rims 2.16 in (55 mm) or wider, designed for low groundpressure to allow riding on soft, unstable terrain, such as snow, sand, bogs...
determined based on the measurement of atmospheric pressure. The greater the altitude, the lower the pressure. When a barometer is supplied with a nonlinear...
around the rim. The air pressure system on a tire changer provides the air to inflate tires mounted on wheels. The air pressure system consists of 4 components:...
wheel added on each side, bringing the total to seven, to reduce the groundpressure due to the tank's increased weight. After the end of World War II,...
3.8 m (12 ft) wide. The large surface area of the tracks means the groundpressure of the Bagger 288 is very small (1.71 bar or 24.8 psi); this allows...
(35 mph) continuously. Reduced groundpressure due to reduced total weight, increased track width and increased track on the ground by moving two (or three)...
inflation pressure is the inflation pressure of tires before a car is driven and the tires (tyres) warmed up. Recommended cold inflation pressure is displayed...
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