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
Brick slip soffit systems and intricate brick features.
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.
New Government task force will build beauty into reformed planning process.
Why it's great to be a civil engineer
Five outstanding aspects of the profession.
The seismic strengthening of historic churches.
ECA Engineering Services Survey
Results show guarded optimism and payment concerns.
Noteworthy navigable aqueducts.