1 Calculating Filler Metal Consumption The number of pounds of welding electrodes or welding wire necessary to complete a given weld joint may be calculated by the formula: P  = WL E Where: P    =    Pounds of electrode or wire required W  =    Weight per foot of weld metal L =    Length of weld (feet) E    =    Deposition efficiency Weight Per Foot of Weld Metal Calculating the weight of weld metal requires that we consider the following items. 1.   Area of the cross-section of the weld. 2.   Length of the weld. 3.   Volume of the weld in cubic inches. 4.   Weight of the weld metal per cubic inch.
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