Cesspit, septic tanks

According to H1, which of the following is NOT an option that should be provided to carry foul water from appliances within a building?

• A) A sewer

• B) A cesspool

• C) A septic tank

• D) A rainwater harvesting system

What determines the capacity of a drain?

• A) The material of the drain

• B) The length of the drain

• C) The size and number of appliances connected to the drain

• D) The color of the drain

What is the minimum trap size for a bidet?

• A) 75mm

• B) 50mm

• C) 32mm

• D) 25mm

What is the maximum dimension for a direct connection of a ground floor W.C. to a drain (directly)?

• A) 1.5 meters

• B) 3 meters

• C) 6 meters

• D) 10 meters

If bends in branch pipes must be used, what action should be taken?

• A) Increase the pipe diameter

• B) Decrease the pipe diameter

• C) Provide additional ventilation

• D) Seal the pipes with tape

What is the maximum length for a waste pipe from a sink before additional ventilation is needed to prevent trap seal loss according to H1?

• A) 1.5 meters

• B) 3 meters

• C) 10 meters

• D) There is no maximum length

What is the maximum slope for a W.C. waste pipe?

• A) 18mm per meter

• B) 25mm per meter

• C) 44mm per meter

• D) 90mm per meter

What conditions must be met for a stub stack to be used?

• The stack must be connected to a ventilating pipe.

• The stack must be of a certain minimum height.

• The stack must be within a certain distance from the building.

• The stack must be made of specific materials.

Why is a minimum radius bend required at the foot of a stack?

• To prevent blockages.

• To ensure proper ventilation.

• To allow for thermal expansion.

• To make installation easier.

Where should the discharge stack be located if a building is over 3 storey?

• Inside the building.

• At the rear of the building.

• At the front of the building.

• Above the roofline.