Commercial Septic System Installer
EXAM NEWEST 2026 WITH COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW
VERSION!!
All tanks must have: -CORRECTANSWER 2 compartments
All tanks whether pre-manufactured or constructed on site shall be constructed so that
the length is ___________ compared to the width. -CORRECTANSWER at least one
and one- half (1 1/2) times... "to the width."
Septic Tanks may be made of: -CORRECTANSWER Concrete, Plastic, fiberglass, or
other materials as approved by the department.
Tank compartment partitions will be located: -CORRECTANSWER 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
_____________________________. -CORRECTANSWER 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 -CORRECTANSWER 66 inches
True or False: Walls and bottom of poured-in-place septic tanks must be reinforced. -
CORRECTANSWER True
How can a Septic tank be reinforced? -CORRECTANSWER 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? -CORRECTANSWER 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. -CORRECTANSWER 150
True or False: Walls, bottoms, and lids of poured-in-place septic tanks should have a
minimum thickness of four inches (4"). -CORRECTANSWER True
EXAM NEWEST 2026 WITH COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW
VERSION!!
All tanks must have: -CORRECTANSWER 2 compartments
All tanks whether pre-manufactured or constructed on site shall be constructed so that
the length is ___________ compared to the width. -CORRECTANSWER at least one
and one- half (1 1/2) times... "to the width."
Septic Tanks may be made of: -CORRECTANSWER Concrete, Plastic, fiberglass, or
other materials as approved by the department.
Tank compartment partitions will be located: -CORRECTANSWER 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
_____________________________. -CORRECTANSWER 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 -CORRECTANSWER 66 inches
True or False: Walls and bottom of poured-in-place septic tanks must be reinforced. -
CORRECTANSWER True
How can a Septic tank be reinforced? -CORRECTANSWER 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? -CORRECTANSWER 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. -CORRECTANSWER 150
True or False: Walls, bottoms, and lids of poured-in-place septic tanks should have a
minimum thickness of four inches (4"). -CORRECTANSWER True
