TEXAS MASTER PLUMBING FINAL PAPER 2026 SOLVED QUESTIONS GRADED A+

TEXAS MASTER PLUMBING FINAL
PAPER 2026 SOLVED QUESTIONS
GRADED A+


◉ DFUs for a private bathroom water closet (UPC). Answer: 3


◉ Maximum trap arm length for a 3-inch trap. Answer: 8 feet


◉ Required pipe size for a gas line run of 75 feet with 175,000 BTUs
demand using 0.3 psi tables. Answer: 1 inch


◉ Minimum required size of a building sewer for a single-family
residence. Answer: 4 inch


◉ DFUs a 3-inch vent can carry (UPC). Answer: 36


◉ Minimum air gap for a 3/4-inch water supply pipe. Answer: 1 inch


◉ Minimum burial depth of a building sewer (UPC). Answer: 12
inches


◉ DFUs assigned to a bathtub (UPC). Answer: 2

, ◉ Maximum spacing allowed between cleanouts on a 4-inch
horizontal drain. Answer: 100 feet


◉ Maximum fixtures a circuit vent may serve. Answer: 6


◉ Minimum size of a trap for a shower drain. Answer: 1-1/2 inch


◉ Minimum size vent for a water closet. Answer: 1-1/2 inch


◉ Maximum length of a trap arm for a 2-inch trap. Answer: 5 feet


◉ Discharge height requirement for a water heater T&P relief valve.
Answer: 6 inches


◉ Minimum size of a gas vent for a 40,000 BTU appliance. Answer: 3
inch


◉ Minimum pressure required at the highest fixture in a water
distribution system. Answer: 8 psi


◉ Required slope for a horizontal vent pipe. Answer: 1/4 inch per
foot