Kentucky Certified Septic System Installer Exam Questions And Correct Answers |2025.
All tanks must have: -CORRECT ANSWER-2 compartments
All tanks whether pre-manufactured or constructed on site shall be constructed so that the
length is ___________ compared to the width. -CORRECT ANSWER-at least one and one-
half (1 1/2) times... "to the width."
Septic Tanks may be made of: -CORRECT ANSWER-Concrete, Plastic, fiberglass, or other
materials as approved by the department.
Tank compartment partitions will be located: -CORRECT ANSWER-Not less than two-thirds or
more than three-fourths the Length of the tank from the Inlet end.
Compartment partitions will be constructed so a pass-thru hole or slot equal to or greater
than the diameter of the inlet pipe is positioned below the liquid surface with a
_____________________________. -CORRECT ANSWER-Minimum 25% to a maximum of
50% of the total liquid depth.
Total liquid depth for larger poured-in-place tanks shall have a maximum of
______________inches -CORRECT ANSWER-66 inches
True or False: Walls and bottom of poured-in-place septic tanks must be reinforced. -
CORRECT ANSWER-True
How can a Septic tank be reinforced? -CORRECT ANSWER-six inch by 6 inch (6"x6") No.10
gage welded steel reinforcing wire OR fibrous reinforcing material conforming to ASTM
specifications for such materials.
, How must Tank Lids be Reinforced? -CORRECT ANSWER-using three-eights steel reinforcing
rods (rebar) which shall be spaced twelve inches (12") on center each way extending a
minimum of two and one half (2 1/2") inches and a maximum of three (3") from the outside
edge of the tank lid.
In general, the tank must be able to withstand a uniform live load of
______________________ pounds per square foot in addition to all loads to which an
underground tank is normally subjected. -CORRECT ANSWER-150
True or False: Walls, bottoms, and lids of poured-in-place septic tanks should have a
minimum thickness of four inches (4"). -CORRECT ANSWER-True
Tank lids shall be constructed in ______________________ pieces and shall have securable,
removable access openings located so that the inlet and outlet tees can be
________________________________. -CORRECT ANSWER-one or two,
readily accessed.
Access opening shall have a minimum of _________________ and maximum of
___________________ free space. -CORRECT ANSWER-Minimum: 15"
Maximum: 24"
Tanks with more than 12 inches of cover must extend access openings to within ______
inches of the ground surface. -CORRECT ANSWER-12
All tanks shall be equipped with ________________________________ rated or equivalent
tees at the inlet and outlet ends of the tank. -CORRECT ANSWER-Four inch (4") PVC, ASTM
3034
Tees shall be constructed so they extend into the liquid a minimum of
____________________ and a maximum of __________________ of the liquid depth of the
tank. -CORRECT ANSWER-Min: 25%
All tanks must have: -CORRECT ANSWER-2 compartments
All tanks whether pre-manufactured or constructed on site shall be constructed so that the
length is ___________ compared to the width. -CORRECT ANSWER-at least one and one-
half (1 1/2) times... "to the width."
Septic Tanks may be made of: -CORRECT ANSWER-Concrete, Plastic, fiberglass, or other
materials as approved by the department.
Tank compartment partitions will be located: -CORRECT ANSWER-Not less than two-thirds or
more than three-fourths the Length of the tank from the Inlet end.
Compartment partitions will be constructed so a pass-thru hole or slot equal to or greater
than the diameter of the inlet pipe is positioned below the liquid surface with a
_____________________________. -CORRECT ANSWER-Minimum 25% to a maximum of
50% of the total liquid depth.
Total liquid depth for larger poured-in-place tanks shall have a maximum of
______________inches -CORRECT ANSWER-66 inches
True or False: Walls and bottom of poured-in-place septic tanks must be reinforced. -
CORRECT ANSWER-True
How can a Septic tank be reinforced? -CORRECT ANSWER-six inch by 6 inch (6"x6") No.10
gage welded steel reinforcing wire OR fibrous reinforcing material conforming to ASTM
specifications for such materials.
, How must Tank Lids be Reinforced? -CORRECT ANSWER-using three-eights steel reinforcing
rods (rebar) which shall be spaced twelve inches (12") on center each way extending a
minimum of two and one half (2 1/2") inches and a maximum of three (3") from the outside
edge of the tank lid.
In general, the tank must be able to withstand a uniform live load of
______________________ pounds per square foot in addition to all loads to which an
underground tank is normally subjected. -CORRECT ANSWER-150
True or False: Walls, bottoms, and lids of poured-in-place septic tanks should have a
minimum thickness of four inches (4"). -CORRECT ANSWER-True
Tank lids shall be constructed in ______________________ pieces and shall have securable,
removable access openings located so that the inlet and outlet tees can be
________________________________. -CORRECT ANSWER-one or two,
readily accessed.
Access opening shall have a minimum of _________________ and maximum of
___________________ free space. -CORRECT ANSWER-Minimum: 15"
Maximum: 24"
Tanks with more than 12 inches of cover must extend access openings to within ______
inches of the ground surface. -CORRECT ANSWER-12
All tanks shall be equipped with ________________________________ rated or equivalent
tees at the inlet and outlet ends of the tank. -CORRECT ANSWER-Four inch (4") PVC, ASTM
3034
Tees shall be constructed so they extend into the liquid a minimum of
____________________ and a maximum of __________________ of the liquid depth of the
tank. -CORRECT ANSWER-Min: 25%
