Texas Tradesman Exam Prep 2026
1. What is the spacing(in feet) required 10 feet
for an 1 1/4" or larger steel pipe(on a
horizontal)
2. How many feet from the appliance 6 feet from the device it serve
should a shut off valve be installed
3. What is the spacing(in feet) required 6 feet
for 1/2" for steel pipe?
4. What is the spacing(in feet) required 8 feet
for 3/4" or 1" steel pipe?
5. What are some ways to search for leak- Approved gas detector, a noncorrosive leak detec-
age on a gas piping system tion fluid, or other approved detection methods
6. What should you do in the event of a Make the necessary repair and retest the line
leakage or defect found in the piping
system?
7. What should you check for before turn- Open fittings and ends and that all valves at un-
ing the gas back on? used outlets are closed and plugged or capped.
8. When should equipment and appli- Not until it has been checked for leaks and the
ances be placed into operation? piping system has been purged
9. What should the test pressure on gas Not less than 1 1/2" time the proposed maximum
line be? working pressure, but not less than 3psig.
10. How long should the test for gas last? Not less than 10 minuets
11. Inspection shall consist of? Visual examinations, during or after manufacture,
fabrication, assembly or pressure test
, Texas Tradesman Exam Prep 2026
12. When testing a gas line what test medi- Air, nitrogen, carbon dioxide, and other inert gas.
ums are allowed?
13. When testing a gas line what test medi- Oxygen
um(s) are not allowed?
14. What should be provided on all appli- Shut ott valves
ances?
15. If a common system is serving more Shut ott valves shall be installed outdoors at each
than one building what should be in- building
stalled?
16. Where are shut off valves prohibited? Concealed locations
17. Where should shut off valves be in- Located in places so as to provide access for oper-
stalled? ations and shall be installed so as to be protected
from damage
18. Where should a sediment trap be in- Down stream of an appliance shut ott valve as
stalled close to the inlet appliance as practical.
19. Plumbing fixtures, drains, appurte- Directly connected to the sanitary drainage system
nances, and appliances used to receive of the building or premises
or discharge liquid wastes or sewage
shall be?
20. Sanitary drainage piping from plumb- Connected to a public sewer
ing fixtures in buildings and sanitary
drainage piping systems from premis-
es shall be?
21. Private sewage disposal system in compliance
with state and local requirements
1. What is the spacing(in feet) required 10 feet
for an 1 1/4" or larger steel pipe(on a
horizontal)
2. How many feet from the appliance 6 feet from the device it serve
should a shut off valve be installed
3. What is the spacing(in feet) required 6 feet
for 1/2" for steel pipe?
4. What is the spacing(in feet) required 8 feet
for 3/4" or 1" steel pipe?
5. What are some ways to search for leak- Approved gas detector, a noncorrosive leak detec-
age on a gas piping system tion fluid, or other approved detection methods
6. What should you do in the event of a Make the necessary repair and retest the line
leakage or defect found in the piping
system?
7. What should you check for before turn- Open fittings and ends and that all valves at un-
ing the gas back on? used outlets are closed and plugged or capped.
8. When should equipment and appli- Not until it has been checked for leaks and the
ances be placed into operation? piping system has been purged
9. What should the test pressure on gas Not less than 1 1/2" time the proposed maximum
line be? working pressure, but not less than 3psig.
10. How long should the test for gas last? Not less than 10 minuets
11. Inspection shall consist of? Visual examinations, during or after manufacture,
fabrication, assembly or pressure test
, Texas Tradesman Exam Prep 2026
12. When testing a gas line what test medi- Air, nitrogen, carbon dioxide, and other inert gas.
ums are allowed?
13. When testing a gas line what test medi- Oxygen
um(s) are not allowed?
14. What should be provided on all appli- Shut ott valves
ances?
15. If a common system is serving more Shut ott valves shall be installed outdoors at each
than one building what should be in- building
stalled?
16. Where are shut off valves prohibited? Concealed locations
17. Where should shut off valves be in- Located in places so as to provide access for oper-
stalled? ations and shall be installed so as to be protected
from damage
18. Where should a sediment trap be in- Down stream of an appliance shut ott valve as
stalled close to the inlet appliance as practical.
19. Plumbing fixtures, drains, appurte- Directly connected to the sanitary drainage system
nances, and appliances used to receive of the building or premises
or discharge liquid wastes or sewage
shall be?
20. Sanitary drainage piping from plumb- Connected to a public sewer
ing fixtures in buildings and sanitary
drainage piping systems from premis-
es shall be?
21. Private sewage disposal system in compliance
with state and local requirements
