When designing the structural support and facades of new buildings against over-stressing and fatigue loading, civil engineers need precise values of the peak and dynamic wind loads. The main sources of these time-dependent loads are buffeting forces induced by atmospheric turbulence and wake-induced forces caused by vortex shedding. To resolve these turbulence phenomena high-fidelity simulations are required. For this purpose I use LES in combination with SEM to calculate the pressure fluctuations on buildings and determine accurately the peak and dynamic wind loads required during the design process. The figures below show the simulation results obtained for the well known tall building model CAARC. Click on the figures for more details.