Computer · Building Services
In a multi-storey plumbing riser diagram, why is a 'relief vent' installed?
- 1To discharge wastewater
- 2To act as a clean-out access
- 3To prevent pressure fluctuations and protect water seals in trap arms✓
- 4To isolate upper floors during maintenance
Correct answer
To prevent pressure fluctuations and protect water seals in trap arms
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