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Commercial Septic System Installer Exam Questions and Answers 2024/2025
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  • Commercial Septic System
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  • Commercial Septic System

All tanks must have:  2 compartments All tanks whether pre-manufactured or constructed on site shall be constructed so that the length is ___________ compared to the width.  at least one and one- half (1 1/2) times... "to the width." Septic Tanks may be made of:  Concrete, Plastic, ...

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  • October 10, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • commercial septic system installer exam questions
  • all tanks must have 2 compartments all tanks wh

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  • Commercial Septic System
  • Commercial Septic System

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2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!


Commercial Septic System Installer Exam
Questions and Answers 2024/2025
All tanks must have:

 2 compartments


All tanks whether pre-manufactured or constructed on site shall be constructed so that the

length is ___________ compared to the width.

 at least one and one- half (1 1/2) times... "to the width."


Septic Tanks may be made of:

 Concrete, Plastic, fiberglass, or other materials as approved by the department.


Tank compartment partitions will be located:


 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

_____________________________.

 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

 66 inches


True or False: Walls and bottom of poured-in-place septic tanks must be reinforced.

1|Page| GradeA+ | 2 0 0 2 5

, 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!

 True


How can a Septic tank be reinforced?


 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?

 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.

 150


True or False: Walls, bottoms, and lids of poured-in-place septic tanks should have a minimum

thickness of four inches (4").


 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

________________________________.

 one or two,
readily accessed.




1|Page| GradeA+ | 2 0 0 2 5

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