A building with a rectangular cross-section is 30-m wide and 150-m tall. Assume that 3D flow effects can be neglected and the building can be segmented where each section would have a drag coefficient of 1.4.
3. Determine the drag (FD)1 in kN on this building if the incoming wind speed is a typical profile in an urban area, U~ y0.40, such that the wind speed at a height of 100 m is 20 m/s.
4. Determine the drag force (FD)2 in kN if the incoming wind speed is assumed to be uniform and equal to Uavg for the profile up to the height of the building.