Ponding water
In civil engineering, the term ‘ponding’ typically refers to the collection of standing water at the ground surface due to the presence of an impermeable layer within the soil. Ref The HS2 London-West Midlands Environmental Statement, Glossary of terms and list of abbreviations, DETR 2013.
It can also refer to the collection of water on an impermeable surface such as a roof, road or pavement where the fall is insufficient to allow surface water runoff, or where drainage is inadequate.
In extreme cases, ponding can be a sign of developing defect, such as settlement, structural movement or even the development of a sinkhole.
Typically ponding is considered to be an undesirable or unintended accumulation of water, unlike a water feature such as a pond, which is intentional. Ponding can cause damage, such as water penetration into buildings, defects on flat roofs and so on. However, it is typically less damaging that floods, which are generally larger in scale than ponding, which tends to be more shallow and localised.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Experimental AI housing target help for councils
Experimental AI could help councils meet housing targets by digitising records.
Gregor Harvie argues that AI is state-sanctioned theft of IP.
BSRIA Occupant Wellbeing survey BOW
Tool that helps assess occupant satisfaction and wellbeing in buildings, covers the physical environment, indoor facilities, functionality and accessibility of a building.
Preserving, waterproofing and decorating buildings.
Many resources for visitors aswell as new features for members.
Using technology to empower communities
The Community data platform; capturing the DNA of a place and fostering participation, for better design.
Heat pump and wind turbine sound calculations for PDRs
MCS publish updated sound calculation standards for permitted development installations.
Homes England creates largest housing-led site in the North
Successful, 34 hectare land acquisition with the residential allocation now completed.
Scottish apprenticeship training proposals
General support although better accountability and transparency is sought.
The history of building regulations
A story of belated action in response to crisis.
Moisture, fire safety and emerging trends in living walls
How wet is your wall?
Current policy explained and newly published consultation by the UK and Welsh Governments.
British architecture 1919–39. Book review.
Conservation of listed prefabs in Moseley.
Energy industry calls for urgent reform.
Heritage staff wellbeing at work survey.
A five minute introduction.
50th Golden anniversary ECA Edmundson apprentice award
Showcasing the very best electrotechnical and engineering services for half a century.
Welsh government consults on HRBs and reg changes
Seeking feedback on a new regulatory regime and a broad range of issues.