Component and Cladding Loads for Buildings with Mean Roof Heights > 60 Feet

This chapter provides examples for determining component and cladding (C&C) wind loads for a typical high-rise building with a flat roof. A building must comply with the following to use this procedure: enclosed, partially enclosed, and partially open buildings; buildings with flat roofs, gable roofs, multispan gable roofs, hip roofs, monoslope roofs, stepped roofs, or sawtooth roofs. The pressures determined in these examples are limit state design pressures for strength design. The building function is an office space. It is not considered an essential facility and structural failure would not pose substantial risk to human life. Controlling negative pressure is obtained with positive internal pressure, and controlling positive pressure is obtained with negative internal pressure. The design pressures are the algebraic sum of external and internal pressures. Positive internal pressure provides controlling negative pressures. These design pressures act across the roof surface (interior to exterior).