Case 1
Navigation
- Introduction
- Causes of Defects
- Good Practices
- Standards
- Maintenance and Diagnostics
- Remedial
- Similar Cases
- References
Maintenance and Diagnostics
An expert walkthrough should be carried out periodically. This can uncover problems such as water ponding, blistering and choking of rainwater outlets. When debris and leaves block up the outlets, can be removed immediately before water ponding happen.
Diagnostics of Defect
Undersizing of rainwater downpipes can not be diagnosed. Visual inspection will be sufficient, by carrying out site experiment ( e.g.check on the timing required to clear the rainwater on the roof surfaces). The check can be done according to ASTM standards (AS/NZS 1462.1:2001 Methods of test for plastics pipes and fittings Method for determining the dimensions of pipes and fittings).