Solar Mounting Wind load:
The design wind speed is V (m/s), according to BS 6399-2:1997 the value of the dynamic pressure qs
Wind load: qs=V x V x 0.613 (Pa)
The size effect factor for external pressures: Ca =0.952 Refer to figure 4 in BS 6399-2
Refer to Table 13 in BS 6399-2, Take 30' as design degree
The net pressure overall coefficients is 1.8: Cpe=1.8
The pressure: pe=Ca x Cpe x qs (pa)