Texas State Plumbing Inspectors Exam Questions with Answers 2026

Texas State Plumbing Inspectors Exam Questions with Answers 2025

1. Fixture connections which may be served through access panels are con- sidered: Accessible 2. The part of the lowest piping of a drainage system, which recieves the discharge from the soil, waste and other drainage pipes inside the walls of the building and conveys it to a point 2 feet outside the building wall is a: Building drain 3. A vertical vent that is a continuation of the drain to which it connects is a: Continuous vent 4. A vent which also serves as a drain is a: Wet vent 5. A strack is always: Vertical 6. A pipe which makes an angle of not more than 45 degrees with the vertical is considered: Horizontal 7. The vertical depth of a trap seal is measured from: The weir and the top of the dip of the trap 8. The principal artery of the venting system to which branches may be con- nected is called: Main vent 9. A pressure surge absorbing device operating through the compressibility of air is called: Hammer arrestor 2 / 8 10. A device installed in a drainage system to prevent reverse flow is a: Back- water valve 11. Any pressure less than that exerted by atmosphere is: A vacuum 12. A plugged fitting located at the base of all soil stacks is called: Stack cleanout 13. A vertical line of piping that extends one or more floors and recieved the discharge of water closets and other fixtures is known as: Soil stack 14. A pipe which contains waste that is free from fecal matter is: Waste 15. The piping that extends from the end of the building drain and conveys discharge to the public sewer system is: Building sewer 16. A branch can be in any part of the plumbing system except: Riser 17. An area drain is: A catch basin 18. Which item is not part of a plumbing system: Sprinkler systems 19. Which of the following may give approval for a plumber to cover their installation: Authority having jurisdiction 20. A lavatory drain that is connected into the vent of the water closet is referred to as: Wet vent