If you have civil engineering department then contact them who may readily solve your problem.Īuthor of Book : Engineering Science and Application Design for Belt Conveyors.Īuthor of Book : Belt Feeder Design and Hopper Bin SiloĪdvisor / Consultant for Bulk Material Handling System & Issues. Such situation is quite common in civil engineering contract for excavation work, where civil engineer regularly work out the excavated quantity from irregular ground and consequently irregular shapes. Obviously such calculation result cannot be 100% accurate, but it will serve your purpose. The accuracy of the result will depend upon skill. Then calculate the volume of the various zones, total them and multiply to it by bulk density. You have to imaginarily divide your stockpile into zones which have to match (equivalent) to the various shapes mentioned above. You will find formula for volumes of shapes such as cube, cuboid, prism, cone, pyramid, frustum of cone, frustum of pyramid, cylinder etc. Please refer engineering handbook or engineering tables for areas and volumes. Please work safely and stay away from the piles. The volume of a trapezoid is determined using this formula The small trapezoid will hold a lot of material for you Only as a mass slide of material will result. Reclaimed from left to right and never taken in the center When the stone is reclaimed the semi cones must be One bucket each time and stopping at five buckets to The operator can simply count dtruck buckets and mark If you do not have a place where you can buy a counter Trapezoid the way I described will e simple to do Making a three bucket wide and three bucket wide You and everyone else as you have no measuring Having the loader operator count buckets of struckĪggregate using a hand held counter is safer for Please as the pile side walls can not be trusted even If you make the trapezoid three buckets highĪnd three buckets wide the ange of repose willįorm quickly for you with no issues and it will beĮasy to measure using the formula for the volumeīut measure it from the ground using an inclinometer The trapezoid will form naturally following theĮdges of the pile to its angle of repose. Pile line and then dump in the center to fill The outside edges first following the outer Using the struck volume of the loader bucket onlyĭumping the first two buckets of material You can build a small trapezoid with the loader using this method. No you cannot safely create a trapeziod while pushing the material up and over to create the flat top of the trapeziod. I hope yout loader operator is leaving the loader on the ground and not crawling up the pile which will cause a tip over. If the aggregate is the all same size or you have piles of the same size aggregate you can simply make a small trapezoid. Just walking by it is enought to possibly kill you or someone else. To find volumes and weights of stockpiles with other angles of repose, multiply those values in the table by the factor computed as follows.įactor= - 0.3819įIRST and foremost you cannot trust any pile at any time!!!!!!!!!!!!!!!!!!!!!! Weight (tons) = Volume(ft 3) x density (lb/ft 3) x 1 ton/200 lbĬONICAL STOCKPILE VOLUMES (37° Angle of Repose) In order to calculate the actual weight of material in the stockpile, determine the density or weight/cubic foot. He following formula is used to calculate the volume of a stockpile if the diameter and height are known.ĭ = Diameter of the base of the cone in feet
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