Section 4: Soil and Water Conservation Engineering
Gully Control and Drop Spillways
Subtopic: Gully Control and Drop Spillways
Question Statement:
An anti-vortex baffle plate installed above the inlet riser of a drop inlet pipe spillway functions to:
Options:
(A) Prevent air-entraining surface vortices from forming, thereby ensuring full pipe flow capacity without cavitation
(B) Filter floating trees
(C) Stop fish from jumping
(D) Heat the water
Answer Key:
A
Step-by-Step Solution & Explanation
Surface vortices draw air into the conduit, severely throttling discharge; an anti-vortex baffle interrupts rotational circulation to preserve hydraulic capacity.