a. The velocity pressure is:
p = 0.00256Kz Kzt Kd V 2 I G = 1.48 kPa (31 lbf/ft2)
where
Kz = velocity pressure exposure coefficient = 1.04 for exposure C at a height of 40 ft,
Kzt = 1.0 for all structures except those on isolated hills or escarpments,
Kd = directionality factor = 0.95 for round...
