Note that original units were lb/ft 3, so actual number of significant places in kg/m 3 column are the same as the original unit, i.e., Aluminum density is really only known to three significant places even though four are presented. Unit Weight The total (wet) unit weight of soils, see Table 1, can be estimated from typical values, or measurements of mass and volume can be performed on Shelby tube samples or California or Modified California rings. Density is a measure of the mass of a substance per unit measure. Undrained shear strength to be used in short-term (undrained/total stress) loading conditions only. Your stone dealer tells you he has a truck that can deliver 20 tons of stone per load. unit weight = 167 pcf 1.7 < D 85/D 15 > 2.7 Bed slope from 2 – 20 % uniform flow with NO tailwater 0.555 2/3 30 1/3 1.95*Sq D g = 48 Design Procedure egrhac dstm ue•Eitainits • Apply flow concentration factor of 1.25 to unit discharge • Compute D30 • Specify uniform gradation where D85/D15 < Crushed stone is quoted at a weight of 2700 pounds per cubic yard. Re: Limestone conversion from ton to cubic yard I have no idea what #610 Limestone is, but I found the following: Limestone, solid - 2.2 ton/cubic yard Limestone, broken - 1.3 ton/cubic yard Limestone, pulverized 1.17 ton/cubic yard Determine if any of the above are close, then divide how many tons you need by the above density to get cubic yards. For example, the density of a one-inch cube of iron is much greater than the density of a one-inch cube of cotton. In most cases, denser objects are also heavier. The density of pure water is also 62.4 lbs/cu.ft (pounds per cubic foot) and if we know that ammonium nitrate has a sg of 0.73 then we can calculate that its density is 0.73 x 62.4 = 45.552 lbs/cu.ft. As specific gravity is just a comparison, it can be applied across any units. Re: Weight of lime stone I am having a limestone backing to to an enclosed gas fire, in the chimney breast, my chimney breast is very old eg victorian and has had lots of additions or builders who have made multiple skims or fill ins - a plaster is to put on as a skim but I think this will be a too weak as the limestone backing will be adhered to by an adhesive. You need to know who many cubic yards that comes out to. For long- Note, kg/cu.m divided by 16.02 = lbs/cu.ft Limestone 2700 kg/m3 Chalk 2100 kg/m3 Sandstone 2000 kg/m3 Steel 8000 kg/m3 Concrete 1680-3000 kg/m3 Water 1000 kg/m3 Unit weight ( ) (recall that g) “Rock” 26.5 k m3 Gravel soil 19 k m3 Sandy soil 16 k m3 Silty soil 20 k m3 Clay soil 18 k m3 Water 9.8 k m3 Concrete 23 k m3 Moist Unit Weight (pcf)3 Saturated Unit Weight (pcf)4, 5 I-A 3 – 106 200 18 110 117 I-B >10 20 500 20 115 122 I-C >20 2000 25 125 132 Notes: 1. F:\Truck Body Pricing & Brochures\Excel\Cubic_Yardage_Chart DCubic_Yardage_Chart D Rev A 6/9/2015 AGGREGATE TYPE Moisture content can provide the necessary data for calculating the dry unit weight of … Here is the math: 20 tons X 2000 pounds per ton = 40,000 pounds 40,000 pounds / 2700 pounds per cubic yard = 14.29 cubic yards

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