Missouri Contractors License Exams

Missouri Plumbing Contractor

Sample Questions for the Missouri Plumbing Contractors Exam

  1. What is the aim of municipal codes in relation to drainage systems?
    1. to show you how to size a building drain
    2. to protect the public health
    3. to explain what a waste stack is
    4. to give detailed instructions on calculating maximum fixture unit loads
  2. When a vent is required in indirect waste piping, how must it be installed?
    1. connect it to a vent which serves a sanitary system
    2. to extend separately to the outside air
    3. with a beehive strainer at least 4 inches high
    4. below floor level
  3. What are the two causes of fixture trap seal loss that vent systems protect against in normal fixture use?
    1. siphonage and back pressure
    2. sumps and receiving tanks
    3. suds-producing fixtures and appliances
    4. water closets and building drains
  4. Which of the following implements should be used to prevent kinks when reshaping soft copper tubes?
    1. a dummy
    2. a brass ferrule
    3. a bending spring
    4. an internal switch
  5. What fitting and procedure should be used to connect a discharge pipe from a sewage ejector to a horizontal gravity draining line?
    1. from top through a tapped san tee fitting
    2. from the side through a P-trap fitting
    3. from the top through a wye branch fitting
    4. from the bottom through a 1/8 bend fitting
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