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6.12
Exercise J: Flow Through a Culvert
Objective
To determine the characteristics and observe the flow patterns obtained for water flowing
through a Culvert.
Method
By using the culvert block assembly installed in the C4-MkII flume, and operating the
flume at different heads upstream and downstream.
Equipment Required
Armfield C4-MkII Flume
Culvert block assembly, C4-62 (optional accessory)
Two Hook and Point Gauges, 300mm scale
Armfield F1-10 Hydraulics Bench
Stopwatch (for flow measurement using F1-10 volumetric tank)
Optional Equipment
Direct reading flowmeter
C4-61 Pitot tube and manometer (for velocity measurement)
Theory
The culvert is a covered channel of comparatively short length which is typically installed
to drain water through an embankment. The culvert acts as on open channel, as long as
the section is partly full, and is normally used in this condition. However, under flood
conditions the inlet or outlet may become submerged and a variety of flow patterns can
