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Estimated cubic yards of sand needed per 100 feet of dike <br />length for various dike heights and ratios of height to <br />width. An additional 2 cubic yards will be needed for bags <br />to hold the plastic. <br />Dike Height (ft.) <br />1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 <br />Cubic Width Yards 3 x H 7 15 25 38 54 73 95 119 145 <br />Of Width 6 11 18 27 38 50 65 82 100 <br />Sand 2 x H <br />Use the following equation to estimate the number of <br />bags required per linear foot of dike for a dike with a <br />base width that is three times the height. <br />N = (3 x H) + (9 x H x H) / 2 <br />N - Number of bags required per linear foot of dike <br />H - Dike height (feet) <br />Example: <br />Estimate the number of bags required per linear <br />foot for a dike 3 feet tall. <br />N=(3x3)+(9x3x3)/2=45bags <br />The estimated number of bags needed for 100 linear feet <br />of dike is: <br />1-foot-high dike: 600 <br />2-foot-high dike: 2,100 <br />3-foot-high dike: 4,500 <br />4-foot-high dike: 7,800 <br />A common recommendation is to make the dike twice <br />as wide as its height. This is a minimum width -to -height <br />Stacking sandbags with a base <br />width three times the height <br />Width <br />This volume is calculated based on a <br />center section that is 9 inches wide and <br />the remainder is in a triangular shape. <br />ratio that should be used. The estimated number of bags <br />needed for this ratio is in the following table. This is <br />based on each bag having placed dimensions of about <br />4 to 5 inches high by 9 to 10 inches wide by 14 inches <br />long. <br />The estimated number of bags needed for 100 linear feet <br />of dike that it twice as wide as its height is: <br />1-foot-high dike: 600 <br />2-foot-high dike: 1,700 <br />3-foot-high dike: 3,000 <br />4-foot-high dike: 5,500 <br />5-foot-high dike: 9,000 <br />A cubic yard will fill about 100 30-pound sandbags or <br />about 75 40-pound bags, assuming the sand weighs 110 <br />pounds per cubic foot. Sand weighs 100 to 130 pounds <br />per cubic foot, depending on moisture content and <br />packing. A cubic yard is 27 cubic feet. Each 14-inch by <br />24-inch bag will hold about 0.4 cubic feet if filled about <br />one-half full. Based on volume, each yard will fill about <br />67 bags one-half full. <br />Width: 3 time height <br />Height <br />�= • Bonding trench 1 sack deep, <br />Water side - 2 sacks wide <br />Strip sod before laying <br />"`�� bottom layer, if possible <br />