Tennessee Septic System Exam: Questions With
Correct Solutions
How many years from the date of issuance is a septic permit good
for? Correct Ans - 3 Years
The minimum square footage of a trench bottom installed per
bedroom shall be? Correct Ans - 370
Soil absorption rates greater than ______ minutes per inch are
considered unsuitable for a conventional subsurface sewage system.
Correct Ans - 75
Soil percolation rates less than _____ minutes per inch may be used
for conventional systems under authority of TCA. Correct Ans -
106
Recirculating design is where the elevation in the area utilized for
the absorption field does not exceed____ inches Correct Ans -
12
Recirculating design--- Connecting successive trenches on both ends
and by maintaining the grade in the bottom of these trenches from
_____ to no more than _______ inches Correct Ans - Level, 4
Serial distribution system Correct Ans - This design is
preferred where the elevation difference of the ground surface over
the absorption field area exceeds 12 Inches.
Large Conventional Systems Correct Ans - Those exceeding
2250 square feet of disposal field
, When the design daily flow from a single source exceeds 3000
gallons per day, _______ or ________ shall be used which shall discharge
to separate disposal fields. Each System shall not exceed a design
capacity of ________ gallons per day Correct Ans - Siphons,
Pumps, 3000
The pipe size from the septic tank to the disposal field or pump
chamber shall not be less than ____ inches in diameter and shall be
Schedule ____ PVC Correct Ans - 3, 40
There must be a minimum of ____ feet of undisturbed earth between
adjacent trench walls shall be required. Correct Ans - 6
Pipe for relief lines shall have no ______ and shall have a minimum
inside diameter of ____ inches and conform to or exceed the
standards of ASTM, however Schedule ___ pipe, or its equivalent
with a minimum inside diameter of ____ inches may be used
Correct Ans - perforations, 4, 40, 3
Invert of the overflow pipe in the first relief line shall be at least _____
inches lower than the invert of the septic tank outlet. Correct Ans
- 4
Trenches shall not be excavated when the soil is? Correct Ans -
wet enough to smear or compact easily.
Media for disposal fields shall consist of _________, _________ or ________
They shall be size numbers ____, ____, _____, or________ coarse
aggregate.
The material shall be free from ______, ________, __________, or________
Atleast 90 percent of the material must pass a ______ inch screen and
not more than 5 percent may pass a ______ inch screen. Correct Ans
- Crushed rock, gravel, other suitable material
2, 3, 4, 24
Correct Solutions
How many years from the date of issuance is a septic permit good
for? Correct Ans - 3 Years
The minimum square footage of a trench bottom installed per
bedroom shall be? Correct Ans - 370
Soil absorption rates greater than ______ minutes per inch are
considered unsuitable for a conventional subsurface sewage system.
Correct Ans - 75
Soil percolation rates less than _____ minutes per inch may be used
for conventional systems under authority of TCA. Correct Ans -
106
Recirculating design is where the elevation in the area utilized for
the absorption field does not exceed____ inches Correct Ans -
12
Recirculating design--- Connecting successive trenches on both ends
and by maintaining the grade in the bottom of these trenches from
_____ to no more than _______ inches Correct Ans - Level, 4
Serial distribution system Correct Ans - This design is
preferred where the elevation difference of the ground surface over
the absorption field area exceeds 12 Inches.
Large Conventional Systems Correct Ans - Those exceeding
2250 square feet of disposal field
, When the design daily flow from a single source exceeds 3000
gallons per day, _______ or ________ shall be used which shall discharge
to separate disposal fields. Each System shall not exceed a design
capacity of ________ gallons per day Correct Ans - Siphons,
Pumps, 3000
The pipe size from the septic tank to the disposal field or pump
chamber shall not be less than ____ inches in diameter and shall be
Schedule ____ PVC Correct Ans - 3, 40
There must be a minimum of ____ feet of undisturbed earth between
adjacent trench walls shall be required. Correct Ans - 6
Pipe for relief lines shall have no ______ and shall have a minimum
inside diameter of ____ inches and conform to or exceed the
standards of ASTM, however Schedule ___ pipe, or its equivalent
with a minimum inside diameter of ____ inches may be used
Correct Ans - perforations, 4, 40, 3
Invert of the overflow pipe in the first relief line shall be at least _____
inches lower than the invert of the septic tank outlet. Correct Ans
- 4
Trenches shall not be excavated when the soil is? Correct Ans -
wet enough to smear or compact easily.
Media for disposal fields shall consist of _________, _________ or ________
They shall be size numbers ____, ____, _____, or________ coarse
aggregate.
The material shall be free from ______, ________, __________, or________
Atleast 90 percent of the material must pass a ______ inch screen and
not more than 5 percent may pass a ______ inch screen. Correct Ans
- Crushed rock, gravel, other suitable material
2, 3, 4, 24
