Commercial Septic System Installer Exam
All tanks must have: 2 compartments
All tanks whether pre-manufactured or constructed on site at least one and one- half (1 1/2) times... "to the width."
shall be constructed so that the length is ___________
compared 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 Minimum 25% to a maximum of 50% of the total liquid depth.
hole or slot equal to or greater than the diameter of the
inlet pipe is positioned below the liquid surface with a
_____________________________.
Total liquid depth for larger poured-in-place tanks shall 66 inches
have a maximum of ______________inches
True or False: Walls and bottom of poured-in-place septic True
tanks must be reinforced.
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 150
live load of ______________________ pounds per square
foot in addition to all loads to which an underground tank is
normally subjected.
True or False: Walls, bottoms, and lids of poured-in-place True
septic tanks should have a minimum thickness of four
inches (4").
Tank lids shall be constructed in one or two,
______________________ pieces and shall have readily accessed.
securable, removable access openings located so that the
inlet and outlet tees can be
________________________________.
Access opening shall have a minimum of Minimum: 15"
_________________ and maximum of Maximum: 24"
___________________ free space.
Tanks with more than 12 inches of cover must extend 12
access openings to within ______ inches of the ground
surface.
, Commercial Septic System Installer Exam
All tanks shall be equipped with Four inch (4") PVC, ASTM 3034
________________________________ rated or
equivalent tees at the inlet and outlet ends of the tank.
Tees shall be constructed so they extend into the liquid a Min: 25%
minimum of ____________________ and a maximum of Max: 50%
__________________ of the liquid depth of the tank.
The invert of the outlet tee shall be located two inches
_______________ inches below the invert of the inlet tee.
__________________ tees shall be equipped with an Outlet
approved effluent filter.
Concrete used for poured-in-place or pre-cast septic tanks 28 day compressive strength of 4000 pounds per square inch.
shall have a minimum ________________________.
When pouring concrete, care should be taken to assure it could damage the integrity of the finished product.
such operations are not done during freezing or other wise
inclement periods because
_________________________________.
the finished poured concrete product should have what smooth homogeneous consistency and finish.
texture and finish?
True of False: Vibrating the forms or mix may be helpful in True
eliminating "honey combing" or "bridging" in the finished
product.
Who's responsibility is it to assure the quality of the The on-site sewage contractor.
finished product?
On-site sewage management systems requiring five dosing device
hundred linear feet of field line (500') or more must be
equipped with a ____________________.
Dosing can be accomplished using _____________ or pumps or siphons.
_______________.
Systems requiring at least five hundred (500') but less than a single pump or siphon.
one thousand (1000') linear feet of field line will need
_____________.
Systems requiring one thousand linear feet (1000') or more alternating pumps or siphons.
will need ________________________________.
True or False: Dosing tanks shall meet the construction True
requirements for septic tanks with regard to construction
materials and reinforcement.
True or False: For dosing tanks One or two piece tanks True
may be used.
All tanks must have: 2 compartments
All tanks whether pre-manufactured or constructed on site at least one and one- half (1 1/2) times... "to the width."
shall be constructed so that the length is ___________
compared 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 Minimum 25% to a maximum of 50% of the total liquid depth.
hole or slot equal to or greater than the diameter of the
inlet pipe is positioned below the liquid surface with a
_____________________________.
Total liquid depth for larger poured-in-place tanks shall 66 inches
have a maximum of ______________inches
True or False: Walls and bottom of poured-in-place septic True
tanks must be reinforced.
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 150
live load of ______________________ pounds per square
foot in addition to all loads to which an underground tank is
normally subjected.
True or False: Walls, bottoms, and lids of poured-in-place True
septic tanks should have a minimum thickness of four
inches (4").
Tank lids shall be constructed in one or two,
______________________ pieces and shall have readily accessed.
securable, removable access openings located so that the
inlet and outlet tees can be
________________________________.
Access opening shall have a minimum of Minimum: 15"
_________________ and maximum of Maximum: 24"
___________________ free space.
Tanks with more than 12 inches of cover must extend 12
access openings to within ______ inches of the ground
surface.
, Commercial Septic System Installer Exam
All tanks shall be equipped with Four inch (4") PVC, ASTM 3034
________________________________ rated or
equivalent tees at the inlet and outlet ends of the tank.
Tees shall be constructed so they extend into the liquid a Min: 25%
minimum of ____________________ and a maximum of Max: 50%
__________________ of the liquid depth of the tank.
The invert of the outlet tee shall be located two inches
_______________ inches below the invert of the inlet tee.
__________________ tees shall be equipped with an Outlet
approved effluent filter.
Concrete used for poured-in-place or pre-cast septic tanks 28 day compressive strength of 4000 pounds per square inch.
shall have a minimum ________________________.
When pouring concrete, care should be taken to assure it could damage the integrity of the finished product.
such operations are not done during freezing or other wise
inclement periods because
_________________________________.
the finished poured concrete product should have what smooth homogeneous consistency and finish.
texture and finish?
True of False: Vibrating the forms or mix may be helpful in True
eliminating "honey combing" or "bridging" in the finished
product.
Who's responsibility is it to assure the quality of the The on-site sewage contractor.
finished product?
On-site sewage management systems requiring five dosing device
hundred linear feet of field line (500') or more must be
equipped with a ____________________.
Dosing can be accomplished using _____________ or pumps or siphons.
_______________.
Systems requiring at least five hundred (500') but less than a single pump or siphon.
one thousand (1000') linear feet of field line will need
_____________.
Systems requiring one thousand linear feet (1000') or more alternating pumps or siphons.
will need ________________________________.
True or False: Dosing tanks shall meet the construction True
requirements for septic tanks with regard to construction
materials and reinforcement.
True or False: For dosing tanks One or two piece tanks True
may be used.
