Culvert Specifier

Please note: this interactive tool is designed to generate guide figures only. For detailed calculations, please call us on the number opposite.

Internal span:
Internal height:
Internal length:
Roughness coefficient:
Discharge rate:
Roughness coefficient:

by discharge

Your results...
User input: xmm
Dimension: xmm
Length: m
Discharge rate: m3/s
Storage capacity: m3
(if used as a tank)
Flow area: m2
(if used as a culvert)
Roughness multiplier: Gradient multiplier:

Call 01773 602 432 for further
or you can send the above
results to us and we’ll contact you.


Quotation Request

Submit your Box Culvert enquiry

Read More

Design & Specification

View our details options

Read More

Call 01773 600 211

For technical advice

01773 600 211

We use cookies to help provide you with the best possible online experience and to gather anonymised, aggregate website usage data. You can find out more about the cookies we use and how to disable them in our Cookie Policy. By using our website you agree that we may place cookies of the type listed in our Cookie Policy on your device. Close X