Road Drainage Flashcards
(15 cards)
What is catchpit
Stormwater drainage
What is crespit
Crespit is store household drainage
What is catchment
Catchment is a land area where all water drains in a single river
What is peak discharged ?
Peak discharge is a maximum flow a channel receive during storms .
What is time concentration
Time concentration is the time taken for surface water run off from the furthest point of the catchment to reach the design point
What is the important factors that can affect the time concentration
This factors are slopes, roughness of flow path and length of flow
What is peak discharge ?
Maximum flow a channel will receive during storm
What is culvert
Culvert is a structure that allows water to flow under road, railway or embankment
What is allowable headwater elevation
is the highest water level you can safely allow before water risks overflowing the road.
What is Headwater?
the depth of water at the inlet (entrance) of a culvert or drainage pipe during flow.
What is critical depth
Critical depth is a depth where energy is lowest for the given discharge, making a transition between slow and fast flow.
What are the flow conditions of culvert
Inlet and outlet flow
What is inlet flow
A water flow that is controlled at the entrance of the culvert
What is outlet flow
A water flow that is controlled by the conditions at the outlet
What is rainfall intensity
The rate at which rains falls
