Watercourse screen
Culvert, screen and outfall manual, (CIRIA C786) published by CIRIA in 2019, defines a screen as: ‘An arrangement of bars, grids or poles placed in a watercourse.’
A course screen is: ‘A course screen designed to collect large debris, usually upstream of a culvert.’
A debris screen or trash screen is a: ‘Screen at the inlet of a culvert designed to prevent debris from entering the culvert and causing a blockage.’
A fish screen is: ‘A screen designed to prevent fish being washed into culverts (usually on outlets to ponds and reservoirs).’
A safety screen or security screen is: ‘A screen comprising closely-spaced bars, designed to prevent unauthorised or accidental access to a conduit or other hydraulic structure, which reduces the risk of someone coming to harm.’
A tree screen is a: ‘ Screen upstream of a culvert designed to prevent tree trunks and branches from blocking a culvert or debris screen.’
A weed screen is: ‘A screen comprising closely-spaced bars designed to prevent floating vegetation and small debris entering water intakes and pumping stations.’
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Design and construction material libraries
Material, sample, product or detail libraries a key component of any architectural design practice.
Construction Products Reform Green Paper and Consultation
Still time to respond as consultation closes on 21 May 2025.
Resilient façade systems for smog reduction in Shanghai
A technical approach using computer simulation and analysis of solar radiation, wind patterns, and ventilation.
Digital technology, transformation and cybersecurity
Supporting SMEs through Digitalisation in Construction.
Villa Wolf in Gubin, history and reconstruction. Book review.
Construction contract awards down £1bn
Decline over the past two months compared to the same period last year, follows the positive start to the year.
Editor's broadbrush view on forms of electrical heating in context.
The pace of heating change; BSRIA market intelligence
Electric Dreams, Boiler Realities.
New President of ECA announced
Ruth Devine MBE becomes the 112th President of the Electrical Contractors Association.
New CIAT Professional Standards Competency Framework
Supercedes the 2019 Professional Standards Framework from 1 May 2025.
Difficult Sites: Architecture Against the Odds
Free exhibition at the RIBA Architecture Gallery until 31 May.
PPN 021: Payment Spot Checks in Public Sub-Contracts
Published following consultation and influence from ECA.
Designing Buildings reaches 20,000 articles
We take a look back at some of the stranger contributions.
Lessons learned from other industries.
The Buildings of the Malting Industry. Book review.
Conserving places with climate resilience in mind.