Commercial Septic System Installer Exam Study Guide with Complete Solutions
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Course
Septic License
Institution
Septic License
Commercial Septic System Installer
Exam Study Guide with Complete
Solutions
All tanks must have: - Answer-2 compartments
All tanks whether pre-manufactured or constructed on site shall be constructed so that the length is
___________ compared to the width. - Answer-at least one and one- half (...
How can a Septic tank be reinforced? - 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? - 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. -
Answer✔✔-150
True or False: Walls, bottoms, and lids of poured-in-place septic tanks should have a minimum thickness
of four inches (4"). - 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 ________________________________.
- Answer✔✔-one or two,
readily accessed.
Access opening shall have a minimum of _________________ and maximum of ___________________
free space. - Answer✔✔-Minimum: 15"
Maximum: 24"
Tanks with more than 12 inches of cover must extend access openings to within ______ inches of the
ground surface. - Answer✔✔-12
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