A bridge is proposed at the location of the subsoil profile shown in Fig. 11.21. The foundation for the bridge will consist of reinforced concrete piers embedded at least 10 m into the sandstone layer. The bridge piers will be designed to resist downdrag loads due to liquefaction of the upper layer

Question

A bridge is proposed at the location of the subsoil profile shown in Fig. 11.21. The foundation for the bridge will consist of reinforced concrete piers embedded at least 10 m into the sandstone layer. The bridge piers will be designed to resist downdrag loads due to liquefaction of the upper layer of soil. Determine the site class assuming the site will be subjected to strong ground shaking during the design earthquake.

Accepted Answer

Since the structure will be built with piers that penetrate the potentially liquefiable layer and are embedded in solid rock, the dynamic forces exerted on the structure during the earthquake would probably be closer to those values based on site class A rather than site class F.

Question 14.8: A bridge is proposed at the location of the subsoil profile ...

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