CIRIA publish new Culvert, screen and outfall manual
The design, operation and maintenance of a culvert is critical to effective flood risk management, channelling waste water, accommodating wildlife and contributing to the prevention of plastics flowing into the sea.
With over a million existing culverts and outfalls and many thousands of screens in the UK; some of these legacy structures could be replaced with naturalised channels, coarse screens or more optimally designed structures to enhance performance.
Adopting a ‘whole-life’ approach to their design and operation, the updated CIRIA ‘Culvert, screen and outfall manual (C786)’ replaces two previous guidance documents, CIRIA ‘Culvert design and operation guide (C689)’ (Balkham et al, 2010) and the Environment Agency Trash and security screen guide (Graham et al, 2009).
While reflecting the significant changes that have occurred in asset management over the last 20 years, the manual supplements the outfall and culvert design sections of the UK Design manual for roads and bridges (DMRB).
Written by a team of specialists in hydrology, hydraulics, civil engineering and asset management, this manual is for use in all the nations of the UK and is relevant to local authorities, planning authorities, designers, managers and asset owners.
The free guidance is available for download from the CIRIA website.
