Determine the horizontal and vertical loads for tsunami Load Case 1 on the two-story building shown in Figure 2.28. It is located in an area prone to tsunami flooding, so it has been built with an open area to allow water to pass under the building. However, the first story is completely enclosed, as are the first 3 ft of the second story. The maximum inundation height and flow velocity have been determined as 20 ft and 12 ft/sec, respectively. Use the building geometry to find the design inundation height, h_des, and Figure 2.28 to find design flow velocity, u_des, required for Load Case 1. Assume the drag coefficient Cd = 1.25 and C_sx = I_tsu= 1.0.

Figure 2.28

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4 ft 4 ft 3 ft 2 10 ft 0* 2 ft 30 ft open open (a) Front view Load Case 1 h = 15 ft 20 ft (b) Side view Direction of Flow