This article is about penile erection. For the similar arousal in females, see clitoral erection. For other uses, see Erection (disambiguation). An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firmer, engorged and enlarged.
The obstacles in the menâs steeplechase are 914 millimetres (36.0 inches) high. In the womenâs steeplechase, the obstacles are 762 millimetres high (30.0 inches). The water jump consists of a barrier followed by a pit of water. The landing area for the pit of water is 3.66 metres (12.0 ft) by 0.70 metres (2.3 ft). At its deepest point, the slope goes down to a depth of 700mm (28 inches).
Upstream flow depth is 7.3 ft (2.23 m) and upstream flow velocity is 2.8 ft/s (0.85 m). From Equation 6.1, critical velocity to move the 2.5 mm bed material in the upstream channel is 3.1 ft/s (0.96 m/s), confirming clearwater conditions. The flow blocked by each embankment-is 195 ft 3 /s (5.52 m 3 /s).