The formula used to compute the safeworking load (SWL) for a bridlehitch with two, three,or four legs (fig. 3-23) is SWL (of single vertical hitch)x H (Height) divided by L (Length) x 2 = SWL. Whenthe sling legs are not of equal length, use the smallestH/L measurement. This formula is for a two-legbridle hitch but it is strongly recommended it also beused for the three- and four-leg hitches.However, do not forget it is wrong to assumethat a three- or four-leg hitch will safely lift a loadequal to the safe load on one leg multiplied by thenumber of legs.Other formulas are as follows:Single-BasketHitch(fig. 3-24): For verticallegs, SWL = SWL (of single-vertical hitch) x 2.For inclined legs, SWL = SWL (of single-vertical hitch) x H divided by L x 4.Double-BasketHitch(fig. 3-25): For verticallegs, SWL = SWL (of single-vertical hitch) x 4.For inclined legs, SWL = SWL (of single-vertical hitch) x H divided by L x 4.Figure 3-23.—Determination of bridle hitch sling capacity.3-24