Page 366 - Civil Engineering Formulas

HYDRAULICS AND WATERWORKS FORMULAS 295

PRESSURE ON SUBMERGED
CURVED SURFACES

The hydrostatic pressure on a submerged curved surface (Fig. 12.2) is given by

2 2
P 2 P H P V (12.3)
where P total pressure force on the surface
P force due to pressure horizontally
H
P force due to pressure vertically
V

(a)

A B

C

P = P + W
V
V1
P V1
(b)
E
A B

c.g.
P H
Weight F Reaction
W H

D
C F V Reaction
FIGURE 12.2 Hydrostatic pressure on a submerged curved
surface: (a) Pressure variation over the surface. (b) Free-body
diagram.