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The weight of a rail per length is an important factor in determining rail strength and hence axleloads and speeds. Weights are measured in pounds per yard (imperial units are used in Canada, the United Kingdom and United States) or kilograms per metre (metric units are used in Australia and mainland Europe). 1 kg/m = 2.0159 lb/yd.
The pound per square inch (abbreviation: psi) or, more accurately, pound-force per square inch (symbol: lbf/in2), [1] is a unit of measurement of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force with magnitude of one pound-force applied to an area of one square inch. In SI units, 1 psi is approximately ...
Pound per hour. Pound per hour is a mass flow unit based on the international avoirdupois pound, which is used in both the British imperial and, being a former colony of Britain, the United States customary systems of measurement. It is abbreviated as PPH, or more conventionally as lb/h. Fuel flow for engines may be expressed using this unit.
The British standard ordnance weights and measurements for the artillery were established by the Master General of Ordnance in 1764, and these were not altered until 1919, [citation needed] when the metric system was additionally introduced. This system has largely been replaced by defining the weapon in terms of the measurement of the calibre ...
The braking system was the standard BR system, adopted as part of the Modernisation Plan, of locomotive air and train vacuum brake, both applied by a single handle via a proportional valve. Similarly, the connection for multiple working was the standard electro-pneumatic system designated "Blue Star" with each loco bearing a small blue coloured ...
TSFC or SFC for thrust engines (e.g. turbojets, turbofans, ramjets, rockets, etc.) is the mass of fuel needed to provide the net thrust for a given period e.g. lb/(h·lbf) (pounds of fuel per hour-pound of thrust) or g/(s·kN) (grams of fuel per second-kilonewton). Mass of fuel is used, rather than volume (gallons or litres) for the fuel ...
[36] [37] At the time of the George Washington Bridge's opening, most long suspension spans had stiffening trusses on their sides, and spans generally had a length-to-thickness ratio of 60 to 1, which translated to a weight of 13,000 to 14,000 pounds per square foot (63,000 to 68,000 kg/m 2) and a thickness equivalent to an 11-story building.
Stone (unit) The stone or stone weight (abbreviation: st.) [1] is an English and British imperial unit of mass equal to 14 avoirdupois pounds (6.35 kg). [nb 1] The stone continues in customary use in the United Kingdom and Ireland for body weight. England and other Germanic -speaking countries of Northern Europe formerly used various ...