Figure 13-37.—Determination of single-basket hitch slingcapacity.the sling legs are not of equal length, use the smallestH/L measurement. This formula is for a two-leg bridlehitch, but it is strongly recommended that it also be usedfor the three- and four-leg hitches.NOTE: Do NOT forget it is wrong to assume that athree- or four-leg hitch can safely lift a load equal to thesafe load on one leg multiplied by the number of legs.Other formulas are as follows:Single-basket hitch (fig. 13-37): For vertical legs,SWL = SWL (of single-vertical hitch) x 2.For inclined legs, SWL = SWL (of single-verticalhitch) x H divided by L x 4.Double-basket hitch (fig. 13-38): For vertical legs,SWL = SWL (of single-vertical hitch) x 4.For inclined legs, SWL = SWL (of single-verticalhitch) x H divided by L x 4.Single-choker hitch (fig. 13-39): For sling anglesof 45 degrees or more, SWL = SWL (ofsingle-vertical hitch) x 3/4 or .75.Sling angles of less than 45 degrees are notrecommended; however, if they are used,the formula is SWL = SWL (of single-verticalhitch) x A/B.Figure 13-38.-Determination of double-basket hitch sling capacity.13-20
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