Culvert, Screen and Outfall Manual - CIRIA Guidance
This webinar provides an overview of the new CIRIA manual on culverts, screens and outfalls, the scope of which incorporates four previous documents on culverts, trash and security screens and drainage outfalls.
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Background
There are hundreds of thousands of culverts across the UK providing a means for railways, highways, canals, footpaths etc. to cross watercourses. Some of these culverts also have screens for security purposes or debris management. There are also numerous highway drainage outfalls.
Culverts, screens and outfalls are superficially simple structures, but they have the potential to restrict flow (causing flooding), can be more expensive to maintain than open channels or soakaways, and can adversely affect the aquatic environment and create new health and safety hazards. As a result, there is a presumption against the construction of new or replacement culverts.
Assessment of the hydraulic performance of a culvert, screen or outfall can be complex. This manual provides a number of methods from hand calculation to computer modelling to assist.
In service, a well-designed culvert or outfall may require little attention from an asset manager other than routine inspection and maintenance. It should also not require a screen. However, there are thousands of existing culverts, screens and outfalls across the UK, many where conditions have been significantly altered by urban development, climate change and concern about the quality of the natural environment. Problems of decaying structural fabric, sedimentation, blockage by debris, and inadequate capacity present an asset manager with a constant demand for assessment, rehabilitation, repair and enhancement. Also, there are increasing environmental and potential liability pressures, driven in part by legislation, that require asset managers to examine options for improving the environmental, hydraulic and health and safety performance of culverts, screens and outfalls, including restoring the watercourse back to a more natural state by means of ‘daylighting’ and removal of screens that are no longer necessary.
This webinar provides an overview of how the new manual will help understand, consider and address the above challenges.
This CIRIA project was funded by the Environment Agency, Network Rail, Highways England, Transport Scotland and written under contract to CIRIA by JBA Consulting and Mott MacDonald.
Click here for more information on the Culvert, Screen and Outfall Training Course.
Click here to access the Culvert, Screen and Outfall Manual C786.
Why attend
• To understand how the new guidance helps with the design, assessment, modification and removal of culverts.
• To understand the principal differences between the new guide and the CIRIA, Environment Agency and Highways England documents on which it is based
Who should attend
Asset managers, consulting engineers and scientists, flood risk management practitioners, local authority, highway and drainage engineers, infrastructure planners, environmental professionals, regulators
When
Wednesday 6th May 2020
11:00 - 12:30
Programme
Introduction and background to the project
Owen Jenkins, CIRIA
Overview of document
Jeremy Benn, JBA Consulting
Principle changes
Amanda Kitchen, Mott MacDonald
Fees
Free for CIRIA members
Non-members: £35 + VAT
Booking
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Further information
For further information on CIRIA membership and other services, please contact:
Email: [email protected]
Web: www.ciria.org