Duopitch Roofs - Wind Pressure Coefficients

• Pressure coefficients of duopitch roofs are calculated automatically.

Notation

b = Width of the structure
e = Edge distance
c_pe,10 = External pressure coefficient
h = Height of the structure
q_b = Basic velocity pressure
q_p(z_e) = Peak velocity pressure
z_e = Reference height
w_e = Wind pressure acting on the external surfaces
θ = Wind direction angle

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

The roof, including its protruding parts, should be divided in zones. Pressure coefficients c_pe should be defined for each zone. Zones are given in EN 1991-1-4 Figure 7.8. Pressure coefficient values are given in EN 1991-1-4 Table 7.4a and Table 7.4b.

Pressure coefficient values are given in EN 1991-1-4 Table 7.4a and Table 7.4b.

In the ideCAD software, the regions to which the pressure coefficients of duopintch roofs will be applied are calculated automatically.

Next Topic

Connection Design per AISC 360-16 & AISC 358-16

Related Topics

• Vertical Walls of Rectangular Plan Buildings

• Monopitch Roofs - Wind Pressure Coefficients