Septic Tanks & Drainfields UPDATED
ACTUAL Exam Questions and CORRECT
Answers
In order to determine the absorption qualities of soils for a proposed disposal field, code requires
that the proposed site be - CORRECT ANSWER - subjected to a percolation test
the minimum sidewall of a seepage pit shall be at least - CORRECT ANSWER - 10 feet
below the inlet
What is the minimum gallon capacity of a septic tank - CORRECT ANSWER - 750 gallons
The minimum liquid capacity of a septic tank serving a two bedroom , three bath residence is -
CORRECT ANSWER - 750 gallons
Effluent or drainage from a homes clothes washing machine may be disposed of by draining -
CORRECT ANSWER - through a sanitary system connected to a septic tank
No cesspool, septic tank, seepage pit or drainfield shall be connected to any public sewer or to
any building sewer leading to a public sewer. TF - CORRECT ANSWER - True
A 4" concrete pad shall be poured around the well casing and shall extend ______ inches on all
sides. - CORRECT ANSWER - 18" on all sides
Maximum length of a single tile drainfield lateral shall be _____ feet - CORRECT
ANSWER - 100 feet
Where distribution drain lines in leaching beds are used, the maximum distance between centers
of distribution lines shall not exceed - CORRECT ANSWER - 6 feet
, A cesspool is 48" in diameter and 20 feet deep. If filled to the top with water the volume in
gallons would be - CORRECT ANSWER - 1880 gallons
according to code, a septic tank can not be installed closer than _____ feet to the building water
supply service - CORRECT ANSWER - 5 feet
the liquid capacity of all septic tanks for dwelling units I determined by the number of -
CORRECT ANSWER - bedrooms
A septic tank for a four bedroom house must have a capacity of at least _____ gallons -
CORRECT ANSWER - 1200 gallons
Cast in place septic tanks located in a parking lot shall be designed to support the anticipated
load but not less than that of a - CORRECT ANSWER - 10 ton truck
The minimum distance from a drainfield to a basement wall shall ______ feet - CORRECT
ANSWER - 8 feet
The minimum airspace with in a septic tank is - CORRECT ANSWER - 9 inches
Residential septic tanks - CORRECT ANSWER - Shall be rectangular shape
The Disposal field line is sized by all the following reasons except the
Septic tank size, type of soil, waste flow rate, pipe Materials - CORRECT ANSWER - Pipe
materials
A concrete septic tank shall be protected from corrosion bituminous coating extending ______
inches below the waterline - CORRECT ANSWER - 4 inches below
ACTUAL Exam Questions and CORRECT
Answers
In order to determine the absorption qualities of soils for a proposed disposal field, code requires
that the proposed site be - CORRECT ANSWER - subjected to a percolation test
the minimum sidewall of a seepage pit shall be at least - CORRECT ANSWER - 10 feet
below the inlet
What is the minimum gallon capacity of a septic tank - CORRECT ANSWER - 750 gallons
The minimum liquid capacity of a septic tank serving a two bedroom , three bath residence is -
CORRECT ANSWER - 750 gallons
Effluent or drainage from a homes clothes washing machine may be disposed of by draining -
CORRECT ANSWER - through a sanitary system connected to a septic tank
No cesspool, septic tank, seepage pit or drainfield shall be connected to any public sewer or to
any building sewer leading to a public sewer. TF - CORRECT ANSWER - True
A 4" concrete pad shall be poured around the well casing and shall extend ______ inches on all
sides. - CORRECT ANSWER - 18" on all sides
Maximum length of a single tile drainfield lateral shall be _____ feet - CORRECT
ANSWER - 100 feet
Where distribution drain lines in leaching beds are used, the maximum distance between centers
of distribution lines shall not exceed - CORRECT ANSWER - 6 feet
, A cesspool is 48" in diameter and 20 feet deep. If filled to the top with water the volume in
gallons would be - CORRECT ANSWER - 1880 gallons
according to code, a septic tank can not be installed closer than _____ feet to the building water
supply service - CORRECT ANSWER - 5 feet
the liquid capacity of all septic tanks for dwelling units I determined by the number of -
CORRECT ANSWER - bedrooms
A septic tank for a four bedroom house must have a capacity of at least _____ gallons -
CORRECT ANSWER - 1200 gallons
Cast in place septic tanks located in a parking lot shall be designed to support the anticipated
load but not less than that of a - CORRECT ANSWER - 10 ton truck
The minimum distance from a drainfield to a basement wall shall ______ feet - CORRECT
ANSWER - 8 feet
The minimum airspace with in a septic tank is - CORRECT ANSWER - 9 inches
Residential septic tanks - CORRECT ANSWER - Shall be rectangular shape
The Disposal field line is sized by all the following reasons except the
Septic tank size, type of soil, waste flow rate, pipe Materials - CORRECT ANSWER - Pipe
materials
A concrete septic tank shall be protected from corrosion bituminous coating extending ______
inches below the waterline - CORRECT ANSWER - 4 inches below
