plumbing science 1

1. Describe what a pure metal is, and where the metal could be used in a plumbing situation.

• Aluminum is a pure metal that can be used in plumbing for its high melting point and lightweight properties.
• Gold is a pure metal that can be used in plumbing for its affordability and availability.
• Iron is a pure metal that can be used in plumbing for its flexibility and durability.
• Copper and lead is a pure metal that can be used in plumbing for its corrosion resistance and malleability.

1. What does a ferrous material contain?         

• Steel
• Copper
• Iron
• Aluminum

1. What is a disadvantage of a ferrous material?  

 

• It is resistant to high temperatures and chemicals.
• It is lightweight and easy to work with.
• It is non-magnetic and will not corrode.
• It is magnetic and will corrode if not treated.

1. What is an alloy?       

• A mixture of two or more metals.
• A mixture of two or more non-metals.
• A single pure metal.
• A combination of metal and wood.

1. Name two alloys used in the plumbing industry and where they may be found.

• Steel (iron and carbon). Faucets
• Aluminum (aluminum and copper). Water heaters
• Bronze (copper and tin). Secondary circulation pump.

• Brass (copper and zinc). Compression fittings.

1. What plastic is commonly used as the underground mains and the service pipe to a property?

• ABS (Acrylonitrile Butadiene Styrene)
• HDPE (High Density PolyEthylene)
• MDPE (Medium Density PolyEthylene)
• PVC (Polyvinyl Chloride)

1. What plastic can be used to supply hot and cold water to the draw off point inside a domestic property?

• Polybutylene
• PEX
• PVC
• Copper

1. Which plastic is used on waste discharge branches and can be solvent welded?

 

• HDPE (High-Density Polyethylene)
• PP (Polypropylene)
• ABS (Acrylotrile Butadiene Strene)
• PVC (Polyvinyl Chloride)

1. What is density equal to?

• Weight / Length
• Height / Width
• Speed / Time
• Mass / Volume

1. What is the relative density of water?

• 2
• 3
• 1
• 4