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en.wikipedia.org/wiki/Stone_(unit)

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

www.disabled-world.com/calculators-charts/convert-stones.php

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.

www.engineeringcivil.com/unit-weight-of-materials-used-at...

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.

your.kingcounty.gov/dnrp/library/archive-documents/wlr/...

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

www.metric-conversions.org/weight/stones-to-pounds.htm

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

www.amlinkmarble.com/weigtcalculator/weightcalculator.htm

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.

en.wikipedia.org/wiki/Specific_weight

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

downeastermfg.com/wp-content/uploads/2015/07/Cubic_Yardage_Chart-D.pdf

F:\Truck Body Pricing & Brochures\Excel\Cubic_Yardage_Chart DCubic_Yardage_Chart D Rev A 6/9/2015 AGGREGATE TYPE