Awarded as the best online publication by CIDC

What is the difference between inlet control and outlet control in hydraulic design of box culvert?

In the hydraulic design of box culvert, there are two flow controls, namely inlet control and outlet control. In inlet control, the entrance characteristics of the box culvert (e.g. headwater depth and entrance configuration) determine the hydraulic capacity of the box culvert, and the culvert is actually capable of conveying a greater flow than the inlet would allow. Barrel shapes and tailwater depth are of no significance in determining the hydraulic capacity. Inlet control usually takes place for culverts lying on steep slopes.

For outlet control, the inlet could accept more flow than the box culvert could carry and the hydraulic capacity of the box culvert is dependent on all hydraulic factors upstream from outlet tailwater.

Advertisements

This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

Share this post

Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

If you have a query, you can ask a question here.

One comment on "What is the difference between inlet control and outlet control in hydraulic design of box culvert?"

Yusuf Ozovehe says:

What is the effect of pumping of lateritic fill on a road under construction and how can it be controlled to prevent damages to road.

Leave a Reply

Your email address will not be published. Required fields are marked *

Ask a question