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What is the requirement for waste trap installation?

April 26, 2017installation requirement trap waste

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What is the requirement for waste trap installation?

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Trap sizes up to and including 50mm discharging to soil stacks should have a 75mm water seal. However, a water seal of 50mm is allowed on baths and shower trays, also on spray-tap basins provided they are fitted with flush-grated waste without plugs. But traps discharging to a trapped drain gully may have a 38mm water seal. Trap sizes are to comply with table 4 of BS5572:1994. For more info, please click here.