Wind Pressure and Wind Forces

Notation

A_ref = Reference area of the structure or structural element
F_w = The wind force acting on a structure
c_f = Force coefficient for the structure
c_pe = External pressure coefficient
c_sc_d = Structural factor
q_p(z_e) = Peak velocity pressure
w_e = Wind pressure acting on the external surfaces

Wind Pressure on Surfaces

The wind pressure acting on the external surfaces, w_e is obtained from equation below.

q_p(z_e) is the peak velocity pressure, c_pe is the pressure coefficient for the external pressure given in Pressure and Force Coefficients title

Wind Forces

The wind forces for the whole structure or a structural component is calculated from equation below. Wind forces calculated by using summation over the individual structural elements, are applied to diaphragms.

Structural factor c_sc_d is defined by user. c_f is the force coefficient for the structure or structural element. q_p(z_e) is the peak velocity pressure at reference height z_e. A_ref is the reference area of the structure or structural element.