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Question 11.14: For Prob. 11.13, is the dowdrag load a considerable amount w...

For Prob. 11.13, is the dowdrag load a considerable amount when compared to the increase in allowable bearing pressure for seismic loading conditions?

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From Prob. 11.5, the one-third increase in allowable load for each pier for seismic loads = 5000 kN – 3770 kN = 1230 kN. The downdrag load Q_{D} 85 kN from Prob. 11.13 equals only 6.9% (i.e., 85/1230 = 0.069) of this value. Hence the downdrag load is not considerable when compared to the one-third increase in allowable load forearthquake conditions.

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