3. A culvert with a headwall is to be laid through a road embankment at the natural stream slope of 0.004. The inlet invert is set at an elevation of 20.5 m and the maximum allowable headwater elevation is 23.0 m. The length of the culvert is100 m and the tailwater elevation is 22.0 m. Check to see whether a 1500 mm (width) by 1200 mm (depth) twin box culvert is sufficient to allow a design discharge of 6.0 m³/s to pass through the culvert. If so, sketch the most likely flow conditions at the inlet and outlet of the culvert.

3. A culvert with a headwall is to be laid through a road embankment at the natural stream slope of 0.004. The inlet invert is set at an elevation of 20.5 m and the maximum allowable headwater elevation is 23.0 m. The length of the culvert is100 m and the tailwater elevation is 22.0 m. Check to see whether a 1500 mm (width) by 1200 mm (depth) twin box culvert is sufficient to allow a design discharge of 6.0 m³/s to pass through the culvert. If so, sketch the most likely flow conditions at the inlet and outlet of the culvert.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Open Channel Flow

Open channel flow is a branch of fluid mechanics. It deals with the flow of fluid in an open conduit or free surface. In an open channel flow, gravity induces the flow of water whose surface is open to the air. This flow is free-falling rather than confined in rigid body conduits. The open channel flow depends upon two parameters that are the cross-section of the conduit and the velocity profile. Practical examples of open channel flow are streams, rivers, canals, and other drainage systems.In open channel flow, the cross-sectional area of at least one of the sides is exposed to air, and the surface of water faces atmospheric pressure. This flow is also known as free gravity flow. The cross-sectional area of the conduit can be either man-made or a natural channel. For instance, the flow in rivers and streams are natural conduits, and the flow in a canal and sanitary systems are man-made or engineered channels.

Question

3.
A culvert with a headwall is to be laid through a road embankment at the natural stream slope
of 0.004. The inlet invert is set at an elevation of 20.5 m and the maximum allowable headwater
elevation is 23.0 m. The length of the culvert is100 m and the tailwater elevation is 22.0 m.
Check to see whether a 1500 mm (width) by 1200 mm (depth) twin box culvert is sufficient to
allow a design discharge of 6.0 m3/s to pass through the culvert. If so, sketch the most likely
flow conditions at the inlet and outlet of the culvert.

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