TITLE 5 SEPTIC INSTALLERS EXAM QUESTIONS WITH
DETAILED VERIFIED AND 100% ACCURATE ANSWERS
What are tanks, d-boxes, traps, and pump chambers set on Correct
Answers 6" of mechanically compacted stone (set level)
Min size for access manhole in tanks Correct Answers 20" diameter
Max cover over top of SAS Correct Answers 36" to finished grade
Minimum flow velocity for all pipes Correct Answers 2 feet per second
How are all components of system marked Correct Answers Magnetic
Tape
Riser depth requirement Correct Answers Max 6" below finished grade
Building sewer pipe requirement Correct Answers at least 4" diameter
Building sewer distance to private water supply Correct Answers at least
10'
Building sewer slope requirement Correct Answers at least 0.01, 0.02
preferred (1/4" per foot)
, Building sewer vent requirement Correct Answers must be vented
through building system is serving
Septic Tank min size and capacity Correct Answers 1,500 gallons, 200%
of design flow
Septic Tanks can have how many compartments Correct Answers no
more than 2
Compartments in multiple compartment tanks are connected by Correct
Answers vented, inverted u-shaped pipe, at least 4" in diameter and
extending below the scum layer
2 compartment septic tanks are required when Correct Answers system
serves facility other than single family home, flow rate is over 1,000
gpd, garbage grinder
When are garbage grinders prohibited Correct Answers when the septic
tank is elevated
Location requirements for Inlet/Outlet tees Correct Answers min 6"
above flow line, in or within 12" of opposing end walls, min 3" between
top of tees and bottom of tank covers
Inlet pipe invert elevation Correct Answers 2"-3" above invert of outlet
pipe
DETAILED VERIFIED AND 100% ACCURATE ANSWERS
What are tanks, d-boxes, traps, and pump chambers set on Correct
Answers 6" of mechanically compacted stone (set level)
Min size for access manhole in tanks Correct Answers 20" diameter
Max cover over top of SAS Correct Answers 36" to finished grade
Minimum flow velocity for all pipes Correct Answers 2 feet per second
How are all components of system marked Correct Answers Magnetic
Tape
Riser depth requirement Correct Answers Max 6" below finished grade
Building sewer pipe requirement Correct Answers at least 4" diameter
Building sewer distance to private water supply Correct Answers at least
10'
Building sewer slope requirement Correct Answers at least 0.01, 0.02
preferred (1/4" per foot)
, Building sewer vent requirement Correct Answers must be vented
through building system is serving
Septic Tank min size and capacity Correct Answers 1,500 gallons, 200%
of design flow
Septic Tanks can have how many compartments Correct Answers no
more than 2
Compartments in multiple compartment tanks are connected by Correct
Answers vented, inverted u-shaped pipe, at least 4" in diameter and
extending below the scum layer
2 compartment septic tanks are required when Correct Answers system
serves facility other than single family home, flow rate is over 1,000
gpd, garbage grinder
When are garbage grinders prohibited Correct Answers when the septic
tank is elevated
Location requirements for Inlet/Outlet tees Correct Answers min 6"
above flow line, in or within 12" of opposing end walls, min 3" between
top of tees and bottom of tank covers
Inlet pipe invert elevation Correct Answers 2"-3" above invert of outlet
pipe
