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Figurę 2.19 Yariation ofwind speed and pressure with height.

*3

Open . i ‘.parapet l—tr>............ ..........^J			r	W	Solid parapetj		:
i

T

Parapet	Unloaded bridge	Live loaded bridge
Open	d=dy	d=d2
Solid	d=d2	d=d2 or d3
		whichever is
		greater

d_L= 2.5 m above the highway carriageway, or 3.7 m above the raił level. or 1.25 m above footway or cycle track

Figurę 2.26 Depth d to be used for calculating A j.