Installer's Test Assignment Questions Solved Correctly.
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Course
OSSF Installer 1
Institution
OSSF Installer 1
The gravel in the disposal field trenches shall not be covered with which of the following?
a) untreated building paper
b) 6-mil black plastic
c) 2 inch layer of straw
d) Other material determined equivalent by the Commissioner - Answer b) 6-mil black plastic
The soil area required for th...
Installer's Test Assignment Questions
Solved Correctly.
The gravel in the disposal field trenches shall not be covered with which of the following?
a) untreated building paper
b) 6-mil black plastic
c) 2 inch layer of straw
d) Other material determined equivalent by the Commissioner - Answer b) 6-mil black plastic
The soil area required for the installation of a conventional substitute system is?
a) 30% less than for a conventional system
b) a larger soil footprint than a conventional system
c) the same soil footprint as a conventional system - Answer c) The same soil footprint as a
conventional system
If the permit specifies that the system is to be installed 24 inches deep, this means?
a) 24 inches from the surface of the ground to the top of the gravel
b) 24 inch from the top of the ground to the bottom of the trench and lines installed on contour
c) trench depth may vary between 24 to 30 inches - Answer b) 24 inches from the top of the ground to
the bottom of the trench and lines installed on contour
In soils that are approved by percolation tests or evaluated to have absorption rates higher than 60 MPI
LDGP systems require?
a) installation in a 24 inch trench with gravel back fill leveled to the top of the LDGP
b) installation in a 24 inch trench with a quality top soil backfill
c) installation in an 18 inch trench with gravel backfill to the top of the LDGP
d) installation in a 24 inch trench with gravel backfill to 2 inches above LDGP - Answer a) installation in
a 24 inch trench with gravel back fill leveled to the top of the LDGP
, The maximum trench width allowed for a 24 inch wide chamber product is
a) 24 inches
b) 30 inches
c) 34 inches
d) 36 inches - Answer b) 30 inches
What is the proper volume of a dosing (pump) chamber?
a) same as the septic tank
b) 1000 gallons
c) two times the daily waste water flow
d) 900 gallons - Answer c) two times the daily waste water flow
When installing conventional and conventional substitute systems
a) disposal field trenches shall follow the contour of the ground surface
b) a minimum of 6 ft of undisturbed earth shall be required between trenches
c) trenches shall not be excavated when the soil is wet enough to smear or compact
d) all of the above - Answer d) all the above
An installer may call for a final inspection on a system that utilizes a pumped dosing system after?
a) the field lines have been installed
b) the septic tank, pump tank, and field lines have been installed and the electrical inspector has
inspected and approved the electrical component of the system
c) the house is built and electricity is turned on - Answer b) the septic tank, pump tank, and field lines
have been installed and the electrical inspector has inspected and approved the electrical components
of the system
The maximum amount of falll allowed in the bottom of a conventional dispossal trench is
a) 2 inches
b) 4 inches
c) 6 inches - Answer b) 4 inches
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