Catchment area (effective) (roof drainage)
Revision as of 10:11, 11 April 2017 by Joceil.infante (talk | contribs) (Created page with "File:Example.jpg *Area to be drained within a roof. Unit of measurement is in square meter <math>(m^2)</math>. *Catchment area can be a flat or sloping roof/ surfaces and...")
- Area to be drained within a roof. Unit of measurement is in square meter .
- Catchment area can be a flat or sloping roof/ surfaces and also includes vertical surfaces.
- Effective catchment area for vertical surfaces
Single wall shall be 50% of its total surface area up to a maximum exposed height of 33feet (10metres).