What is the name of the grid network of pipes that supply water to cities, towns, and villages?

• Trunk mains

• Branch mains

• Feeder mains

• Distribution mains

What is the range of diameter for the trunk main pipes?

• 75mm to 2.3m

• 80mm to 2.5m

• 50mm to 1.5m

• 60mm to 2.0m

How are connections made to cast iron for the water mains?

• Self-drilling, self-tapping

• Soldering

• Bolting

• Welding

What type of ferrule is used for water mains made from PVCu, polyethylene, and cement lined asbestos?

• Aluminum strap type ferrule

• Copper strap type ferrule

• Brass strap type ferrule

• Steel strap type ferrule

What equipment is used to drill, tap, and install a brass ferrule on the water main while it is still under full pressure?

• Pneumatic drill

• Hydraulic press

• Self-drilling, self-tapping machine

• Jackhammer