TEXAS MASTER PLUMBING TEST 2025-2026
QUESTIONS AND ANSWERS GRADED A+
Tenches installed parallel to footings shall not extend below the ____________ of the wall or
footing.
45 degree bearing plane
Copper must be supported horizontally __________ on small pipe and __________ on 1 1/2
inches or larger
6 feet or closer, 10 feet
Drainage pipes shall be tested with water at __________ or air at _________.
10' head, 5 psi
Testing gauge must have ____________ if testing 10 psi to 100 psi.
1 psi increments
What is the difference between water supply and water distribution piping?
Water supply is outside of building, water distribution is inside of building.
,What is the maximum time PEX can be exposed to sunlight?
30 days
Steel plates must be used to protect piping _____________.
When 1" or closer to edge.
Shower liners must be tested with a minimum of ____________.
2 inches of water for 15 minutes
Access and egress to shower compartments must be a minimum width of __________.
22 inches
During excavation, if you encounter rock, what must you do?
Dig 3 inches below pipe and backfill with sand.
What is the minimum discharge size of a sewer ejector pump?
2 inches for single family dwellings and 3 inches for all other applications.
,What are two things required on a sewage ejector pump?
Full-open valve and backwater or swing check valve.
What is the minimum discharge size for a macerating toilet?
3/4 inches
Water closets shall be set no closer than _________ center or center or ________ from a side
wall.
30 inches, 15 inches
Water closet screws and bolts shall be _________.
brass
What is the standard stub out height for wall-hung toilet?
5 inches standard, 7-1/2 inches ADA.
Wall hung water closets must be supported by _________.
metal carriers
, Joint where fixtures contact wall and floors shall be ______________.
sealed water-tight
Overflows, if on a fixture, must drain to _____________.
inlet (fixture) side of trap
______________ must be provided to slip-joint connections.
Access
There shall be no drinking fountains installed in ___________.
public restrooms
Water closet tanks must contain three things:
1.6 gpf mechanism, anti-siphon ball cock, refill tube.
Public and employee toilet facilities shall have ______________ water closets, with seats that
are ___________.
elongated type; hinged, properly sized and open in front
QUESTIONS AND ANSWERS GRADED A+
Tenches installed parallel to footings shall not extend below the ____________ of the wall or
footing.
45 degree bearing plane
Copper must be supported horizontally __________ on small pipe and __________ on 1 1/2
inches or larger
6 feet or closer, 10 feet
Drainage pipes shall be tested with water at __________ or air at _________.
10' head, 5 psi
Testing gauge must have ____________ if testing 10 psi to 100 psi.
1 psi increments
What is the difference between water supply and water distribution piping?
Water supply is outside of building, water distribution is inside of building.
,What is the maximum time PEX can be exposed to sunlight?
30 days
Steel plates must be used to protect piping _____________.
When 1" or closer to edge.
Shower liners must be tested with a minimum of ____________.
2 inches of water for 15 minutes
Access and egress to shower compartments must be a minimum width of __________.
22 inches
During excavation, if you encounter rock, what must you do?
Dig 3 inches below pipe and backfill with sand.
What is the minimum discharge size of a sewer ejector pump?
2 inches for single family dwellings and 3 inches for all other applications.
,What are two things required on a sewage ejector pump?
Full-open valve and backwater or swing check valve.
What is the minimum discharge size for a macerating toilet?
3/4 inches
Water closets shall be set no closer than _________ center or center or ________ from a side
wall.
30 inches, 15 inches
Water closet screws and bolts shall be _________.
brass
What is the standard stub out height for wall-hung toilet?
5 inches standard, 7-1/2 inches ADA.
Wall hung water closets must be supported by _________.
metal carriers
, Joint where fixtures contact wall and floors shall be ______________.
sealed water-tight
Overflows, if on a fixture, must drain to _____________.
inlet (fixture) side of trap
______________ must be provided to slip-joint connections.
Access
There shall be no drinking fountains installed in ___________.
public restrooms
Water closet tanks must contain three things:
1.6 gpf mechanism, anti-siphon ball cock, refill tube.
Public and employee toilet facilities shall have ______________ water closets, with seats that
are ___________.
elongated type; hinged, properly sized and open in front
