Question: A three - span bridge is supported by 3 6 in diameter drilled shafts as shown in Figure 1 . Settlement of the cohesive layer

A three-span bridge is supported by 36 in diameter drilled shafts as shown in Figure 1. Settlement of the cohesive layer is estimated to be 2 in.
Figure 1. Bridge Elevation
Using ASD design method determine:
The number of abutment drilled shafts needed to support a total structural load of 2400 kips. Is the result feasible? Why?
The capacity of the drilled shafts supporting the pier if the structural load per drilled shaft is 275 kips.
A three - span bridge is supported by 3 6 in

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