COMMERCIAL SEPTIC SYSTEM INSTALLER EXAM | ENVIRONMENTAL
HEALTH I EXAM FOR SEPTIC INSTALLERS USING REVISION 2025 |
QUESTIONS AND ANSWERS
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.
Page 1 of 11
, 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,
Page 2 of 11
HEALTH I EXAM FOR SEPTIC INSTALLERS USING REVISION 2025 |
QUESTIONS AND ANSWERS
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.
Page 1 of 11
, 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,
Page 2 of 11
