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5-- 2t 00(p <br />4.8.3.3 Point Load C>__ <br />Point loads are loads such as outrigger loads from a concrete pump or crane. A wheel <br />load from a concrete truck may also be considered a point load when the concrete truck is <br />adjacent an excavation and in the process of the unloading. The truck could be positioned <br />either parallel or perpendicular to the excavation. <br />The general equation for determining the pressure at distance h below the ground line is: <br />(See Figure 4-50) <br />For m < 0.4: <br />For m > 0.4 <br />n2 <br />6h = H <br />0.2$ z z s Eq. 4-70 <br />(0.16+n } <br />z z <br />0-11=1.77 H 22 (m�+ n z�3 Eq. 4-71 <br />Figure 4-50. Boussinesq Type Point Load <br />