The stone or stone weight (abbreviation: st.) is an English and imperial unit of mass now equal to 14 pounds (6.35029318 kg).. England and other Germanic-speaking countries of northern Europe formerly used various standardised "stones" for trade, with their values ranging from about 5 to 40 local pounds (roughly 3 to 15 kg) depending on the location and objects weighed.
www.state.nj.us/agriculture/divisions/anr/pdf/22_Rip Rap 2011.pdf
Filter d 15 Filter d 50 Riprap <40 d 50 Filter Where d 15, d 50, and d 85 are the diameters of riprap and filter material of which 15, 50, and 85% are finer by weight. The base material may be used as the filter if it meets the above criteria. The minimum sand gravel or stone filter thickness shall be 6 inches or 3 times the d 50
The stone unit of measurement is still used in Great Britain, Ireland, and by some people in Australia for measuring human body weight - as it will probably take a generation or more for populations to fully convert to the metric system, ie. kilograms instead of stones or pounds.
Following table shows unit weight of materials used at construction site. Please note this is for reference purpose only and may vary from place and type of material.
be repeated. These nomographs assume that the unit weight of the rock is 165 pounds per cubic foot. If the rock is of a different weight, then the stone size should be corrected using the following equation: where: D´ 50 = actual stone size for unit weight being used D 50 = stone size computed from nomographs
Stones. A stone is a unit of weight equal to 14 pounds averdupois (or international lbs). By turn, this makes a stone equivalent to 6.35029kg. Stones to Pounds formula
Impotent notice: all weight calculation results by the weight calculator are for reference only * Choose a material you wish to obtain weight calculation from the Material Selection Box. * Average density of the material for weight calculation will be shown in the DENSITY box with g/cc as default unit.
The specific weight (also known as the unit weight) is the weight per unit volume of a material. The symbol of specific weight is γ (the Greek letter Gamma). A commonly used value is the specific weight of water on Earth at 4°C, which is 9.807 kN/m 3 or 62.43 lbf/ft 3.
www.engr.colostate.edu/CIVE510/Lectures/EM 1601 Chapter 3 Final...
United States Army Corps of Engineers Engineering Manual EM 1110-2-1601. 2 Riprap Protection Chapter 3. 3 ... % = weight of individual stone of diameter D % s = unit weight of stone ... – 1.5 times the upper limit of D 50 – Thickness should be increased by 50% if
F:\Truck Body Pricing & Brochures\Excel\Cubic_Yardage_Chart DCubic_Yardage_Chart D Rev A 6/9/2015 AGGREGATE TYPE