Designing gutters to cope with high rainfall - Build 197 (2023)
- Abbreviation
- Designing gutters to cope with high rainfall
- Valid from
- 1/08/2023
- Information provider
- BRANZ Limited,
- Author
- David Hindley
- Information type
- BUILD article,
- Format
- Website, PDF,
Description
With storms bringing massive rainfalls this year and a forecast of more in future, BRANZ recommends a conservative approach in designing gutters.
Designers must determine:
- rainfall intensity for the location
- catchment area of the gutter
- cross-section
- fall
- outlet and downpipe type and size
- overflows.
Scope
This article includes:
- Rainfall internsity
- Gutter catchment
- Cross-section area
- Fall in external gutters
- Outlet and downpipe type and capacity
- Overflows
- Valley gutters
- Internal gutters
- Key points