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The Ultimate Basic Plumbing Quiz
by Staff
Something we all tend to take for granted at home is the plumbing system. Although it is usually reliable, problems can occur. Take this quiz and see how you can repair some of the common problems.

What basic laws of nature does plumbing follow?

  • conductivity, acceleration and motion
  • gravity, pressure and water seeking its own level.
  • motion, elasticity and resilience

What are the two sub-systems in your home plumbing?

  • incoming freshwater and outgoing wastewater
  • hot water and cold water
  • low pressure water and high pressure water

Can there be overlapping of the two subsystems?

  • There can be an underground overlap.
  • An overlap is recommended when the pipes are wider than two inches.
  • Because of pollution issues, there must be a separation.

What seals the trap that prevents sewer gases from entering the household drains?

  • water pressure
  • air admitted by vent stacks and vent pipes
  • the aerator

Is there any reason for individual fixtures to have stop valves?

  • Yes, but only if there is no overflow pipe.
  • No, it just adds to plumbing installation costs.
  • You can thereby localize turning off water.

Which of the following is regarded as a normal temperature setting for a home water heater?

  • 90 degrees F (32C)
  • 120 degrees F
  • 180 degrees F

Why would you use an adequate temperature instead of the highest possible?

  • ensures a smoother flow of hot water
  • reduces wear on the pipes
  • more economical

Are there major differences between sewer and septic systems in your home?

  • They are very similar.
  • The only difference is in the type of pipes used.
  • One uses pressure and the other uses gravity.

What degree of pressure is required to ensure smooth drainage?

  • low pressure
  • high pressure
  • not a matter of pressure

What would happen if there were no air supply from the vent on the roof?

  • Smells from the sewer would enter the system.
  • Waste water would not flow out.
  • Nothing, it is used mainly to add rainwater to the system

In a modern efficient drainage system, is a sink trap really necessary?

  • Only when pipes of three inches or less are used.
  • It is essential.
  • It is necessary only when there is no sink filter.

What are the most common causes of sink blockages

  • toilet paper and air freshener
  • solidified detergents and toothpaste
  • grease and hair

When used in a the context of plumbing, what does DWV stand for?

  • drain-waste-vent
  • darn-water-valve
  • damp-waste-ventilation

How can you get to know the drainage system better?

  • Ask your plumber to draw you a diagram.
  • Examine the pipes under your house or in the basement.
  • Check it out on Google.

What is a fixture?

  • only faucets and traps
  • only toilets and sinks
  • any device using freshwater and wastewater

Before changing a pipe in your house, what should you do?

  • Check your plumbing code.
  • Compare quotes from a few plumbers.
  • Open one of the faucets.

Why would you want to do your own plumbing work?

  • protest local plumbing codes
  • save money
  • weaken the plumbers' stranglehold

What is a bridge in a plumbing system?

  • where one pipe crosses above another
  • trap valve
  • meeting point of the two subsystems

To save time in the event of a plumbing problem, what should you do?

  • Know your system.
  • Have your plumber on speed dial.
  • Have a remote control for the water supply.

How does the drainage system work?

  • water pressure
  • gravity
  • vacuum