Water head
Culvert, screen and outfall manual, (CIRIA C786) published by CIRIA in 2019, defines ‘head’ as: ‘The total energy per unit weight of fluid expressed in metres of water above a datum.’
Head loss is: ‘The difference in head between two points due to friction or other features that result in energy loss (eg a transition, step, construction, expansion or bend).’
Headroom is the: ‘Vertical gap between the water surface and the roof (soffit) of a culvert or outfall to allow for floating debris (also known as air draught).’
Headwater depth is: ‘The depth of water above culvert invert at the culvert inlet.’
Headwater elevation is: ‘The depth of water above datum at the culvert inlet.’
Headwater ratio is: ‘Specific energy of headwater divided by barrel height.’
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Water management terms and techniques
Eight forms of resource optimisation.
CIOB responds to Chancellor Sunak's announcement on jobs and the economy.
CMA & IRM competition law risk guide published
Revised guide to competition rules available.
Brick slip soffit systems and intricate brick features.
An innovative engineering approach could have had tragic consequence for NYC.
Some secrets behind how canals work.
Breaking down possible steps of pre-contract management.
Looking to the future in Wales
ICE event includes comments from Welsh Government Minister Julie James.
How to write them and what they should include.
Designing Buildings Wiki becomes the world's first website to adopt the new knowledge standard.
Pressure Independent Control Valves (PICVs)
Assessing the most beneficial design elements.
Exploring different types of vinyl flooring.