Transcription of SECTION 7 – CULVERTS
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SECTION 7 – CULVERTS
7-1 SECTION 7 CULVERTS Table of Contents SECTION 7 CULVERTS Table of Contents .. 7-1 GENERAL .. 7-2 CULVERT HEADWALLS .. 7-2 General .. 7-2 Conditions at Entrance .. 7-3 Type of Headwall .. 7-3 Debris Fins.. 7-6 CULVERT DISCHARGE VELOCITIES .. 7-6 SELECTION OF CULVERT SIZE AND FLOW CLASSIFICATION .. 7-7 Culvert Hydraulics .. 7-7 Design Procedures .. 7-10 Instructions For using Nomographs .. 7-12 Example 7-1 .. 7-14 HYDRAULIC CONSIDERATIONS IN BRIDGE DESIGN .. 7-15 General .. 7-15 Types Of Flow For Bridge Design .. 7-16 Modeling Hydraulic Conditions .. 7-17 7-2 Drainage Criteria Manual SECTION 7 - CULVERTS SECTION 7 - CULVERTS GENERAL The function of a drainage culvert is to pass the design storm flow without causing excessive backwater or overtopping of the structure and without creating excessive downstream velocities.
The capacity of a culvert for outlet control is calculated using Bernoulli's Equation, which is based on the conservation of energy principle. In the application of this equation, an energy balance is determined between the headwater at the culvert inlet and the tailwater at …
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