12/2/2023 0 Comments Stockpile area calculator![]() The elongated stockpile and its variations are the most common stockpile form in high capacity installations. For example, if 1600 kg/m³ (100 lb/ ft³) material is being stockpiled on soil with an allowable bearing pressure of 14 680 kg/m³ (3000 lb/ft³) the maximum permissible conical stockpile is about 27.4m (90 ft.) high and has a total storage capacity of about 56 000 metric tons (62 000 short tons). More importantly, because the conical pile occupies such a small ground area in relation to its volume, soil pressures on large piles can exceed the bearing strength of the local soil. This results in very long conveyors and supports and accompanying large foundations to withstand the loads on the conveyor. One disadvantage is that very high stockpiles are required to attain large storage capacities. ![]() The main advantage of the conical pile is that it can easily be built by dozing equipment or a fixed belt conveyor. Substituting this value for A reduces Equation 1 to:Ĩ.18 x 10 -4 R☽ = capacity in metric tons………………….(2)Ĥ.09 x 10 -4 r³d = capacity in short tons…………………(3)įor convenience, typical stockpile capacities have been tabulated in both metric and English units in Table 1. This fact will become important later in considerations of live storage capacity.įor many common materials, the angle of repose, A, is about 38 degrees. One should also observe at this point that one-half of the capacity of the stockpile is in the lower 1/5 of the pile. Increasing the height of the stockpile by 26% results in a doubling of the stockpile capacity. This means that the capacity of the conical pile grows very rapidly as the height (and hence the radius of the pile) increases. ![]() Note that the capacity of the conical stockpile varies with the cube of the radius of the pile. The total stockpile capacity is given by:ģ.14 (Tan A)R³ D/3000 = capacity in metric tons…………………(1)Ī = angle of repose for material to be stockpiled The conical stockpile is the simplest and easiest to analyze. Stockpiles fall into two general categories: conical and elongated. In the case of the 2v icosa hemisphere, the floor is a regular decagon (10 sides).Ī = s squared x n /, where s is the side length (61.803399), n is the number of sides (10), and tan stands for tangent.Ī = 61.803399 x 61.Calculating Stockpile Capacity: Once the minimum storage capacities which will assure maximum mill output are known, the appropriate stockpile configuration must be determined. It can be used for those domes whose floor is a regular polygon. Here is an easy formula for anyone comfortable with trigonometry. There are several other options for calculating floor area. This number divided by the square of the radius (100 x 100) is the coefficient for calculating floor area. And muliplying that by 10, the number of triangles in the dome floor, I get an area of 29,389.26 square units. Now, multiplying the altitude by half the base length, we get a triangle area of 2,938.926. The area of an isosceles triangle is half the base length times the altitude. Each will have the following edge lengths: 100, 100 and 61.803399 (edge B is the base of the triangle). To derive the coefficient, divide the floor into 10 identical isosceles triangles. Or, using a more precise coefficient, namely 2.938926, I get an area of 29,389.26 square units, The formula should be 2.94 x R squared, which gives a floor area of 29,400 square units. So your calculator is using the following formula (or equivalent): Floor area = 3.09 x R squared, where R is the radius. Hmmm.If I enter a dome radius of 100 units, your calculator gives a floor area of 30,900 sq. I uploaded this image of the strut labels: Use this tool to find out the total snow load on any size geodesic dome. Use this tool to find out the total wind load on any size geodesic dome. Use this tool to find out the strut lengths and panel sizes to build a trapezium panel dome. Use this tool to find out the strut lengths and panel sizes to build a four frequency geodesic dome. Use this tool to find out the strut lengths and panel sizes to build a three frequency geodesic dome. Use this tool to find out the strut lengths and panel sizes to build a two frequency geodesic dome. Use this tool to find out floor area, diameter, surface area, circumference and volume of a dome. Below are links to various dome tools for calculating strut lengths, floor area, panel sizes and other useful measurments for building geodesic, segmented and other types of dome.
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