Existing buildings · Defined
Ponding water
Water that remains accumulated on a surface rather than draining as intended.
Why it matters
Depth, duration, drainage design, and the roof or pavement system affect its significance. Do not assign a universal acceptable duration without checking the applicable requirements.
In practice
A project example
A blocked roof drain leaves standing water around a mechanical curb after rainfall.
General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.