Drainage power point 4 2025

According to Building Regulations part H, what does the minimum depth of trap seal ensure?

• The water seal is not removed and noxious smell does not enter the building

• The water flows faster

• The system uses less water

• The trap is easier to clean

What is the purpose of a trap under an appliance?

• To stop the noxious (unpleasant) smell from the soil stack entering the property

• To increase water pressure

• To filter water

• To heat the appliance

The jointing methods for traps are mainly push-fit, and more commonly ________ using a rubber seal.

• compression

• adhesive

• solvent-weld

• threaded

Where a trap diameter is 50mm or above, what is the minimum depth the trap seal must be?

• 25mm

• 40mm

• 50mm

• 75mm

What is the trap diameter for a Washbasin?

• 32mm

• 25mm

• 40mm

• 50mm

What is the seal depth for soil stack for a Washbasin?

• 75mm

• 50mm

• 100mm

• 125mm

What is the trap diameter for a Bath?

• 40mm

• 32mm

• 50mm

• 25mm

What is the seal depth for soil stack for a Bath?

What is the trap diameter for a Shower?

• 40mm

• 32mm

• 50mm

• 75mm

What is the seal depth for soil stack for a Shower?

• 75mm

• 50mm

• 100mm

• 40mm