What is the shear wave velocity for Site Class A?

The shear wave velocity for Site Class A is classified as greater than 5000 feet per second. Site Class A refers to rocks and very stiff soils, which exhibit high shear wave velocities. These materials have the ability to transmit seismic waves more effectively, minimizing the potential for damage during seismic events.

Knowing that the velocity exceeds 5000 ft/s indicates a robust geological foundation, which is crucial for seismic design and analysis. In engineering practices, this classification helps in evaluating ground response during earthquakes, aiding in the development of structures that can withstand seismic forces.

The other categories mention ranges that are representative of softer soils and sedimentary materials, which have lower shear wave velocities and, therefore, different engineering implications compared to those found in Site Class A.