ICC AST Installation/ Retrofitting Comprehensive Resource To Help You Ace 2026-2027 Exams Includes
Frequently Tested Questions With ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
To allow passage between tanks for inspection provide a 1/6 of the sum of the adjacent tank diameters, but not less
minimum of? then 3 feet.
Pressure vacuum vents remain normally closed, only 2 through 16 ounces per square Inch or a vacuum of 0.5
opened when the pressure inside the tank reaches? through 1.0 ounces per square inch.
The primary criterion for tank foundation design is the this ranges from 1,000 pounds per square foot for soft clay
allowable bearing pressure of soil. or 4,000 for coarse, compacted gravel
Nominal vent must be at least? 2" nominal pipe size.
Operating/ design pressure
the pressure setting of the venting device. usually 2
shop built tanks are designed for operating pressures
ounces to 1 pound per square inch above atmospheric
between atmospheric and 1.0 psig. in order for air and
pressure.
vapor to be expelled from a tank during filling, the internal
pressure must increase to at least?
Pressure/ vacuum vents remain normally closed only
2 through 16 ounces per square inch or a vacuum of 0.5
when the pressure in the tanks reaches a predetermined
through 1.0 ounces per square inch.
pressure setting of?
In order for air to enter a tank during liquid withdrawal the
It is at least 1 ounce below atmospheric pressure.
internal tank pressure must be reduced to a pont where?
A suitable foundation for vertical tanks can be constructed
with a finished course of clean, compacted sand, gravel
12" beyond the perimeter of the tank.
or crushed rock that is placed over the base course. The
base and the Finnish courses should extend at least?
To provide drainage and settlement the surface of which
6" above the surrounding ground surface.
the tank bottom rests should be at least?
Saddle supports for horizontal tanks may be constructed Steel or reinforced concrete and must be installed on a
of? firm and suitable foundation.
Fire codes require that tank saddles are?
1/7
, ICC AST Installation/ Retrofitting Comprehensive Resource To Help You Ace 2026-2027 Exams Includes
Frequently Tested Questions With ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
higher than 12" above the foundation. have a minimum
fire rating of 2 hours and be constructed of protected
steel, masonary or reinforced concrete.
Roofing felt or expansion joint is not an acceptable elec-
trical isolation for tank saddles.
Reinforced concrete slabs are 6 to 12 inches thick and
constructed to meet 28 day, minimum 3,000 psi strength
requirement.
use #12 TW or THHN thin stranded or solid wire to bond
When grounding a tank use #4 solid or stranded cable.
components
The minimum opening in a vault for personal entry should
30"
be a diameter of at least?
12' above the general grade level and be located at least
5 feet from building openings. emergency vents may dis-
Normal tank vent should extend not less then?
charge inside vault but must remain vapor tight during
normal operation.
Emergency shut ott switch must be located between 20
and 100 feet from the dispensers.
Enclosed wiring within class 1 division 1 areas must use a
maximum 3' long of explosion proof flexible fittings.
Access manways that are intended for personal entry into
a tank must be at least 24" diameter.
When using galvanic cathotic protection for tank bottoms
the anodes should be 1' outside the tank perimeter and place anodes 3 to 5 feet from piping and 2 to 3 feet below
at least 18" lower than the tank bottom. Anodes may be grade but outside of the piping trench in native soil.
placed horizontally or vertically.
If lifting a tank make sure that the angle between the chain
and vertical does not exceed 30 degrees
Galvanic anode installation.
2/7
Frequently Tested Questions With ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
To allow passage between tanks for inspection provide a 1/6 of the sum of the adjacent tank diameters, but not less
minimum of? then 3 feet.
Pressure vacuum vents remain normally closed, only 2 through 16 ounces per square Inch or a vacuum of 0.5
opened when the pressure inside the tank reaches? through 1.0 ounces per square inch.
The primary criterion for tank foundation design is the this ranges from 1,000 pounds per square foot for soft clay
allowable bearing pressure of soil. or 4,000 for coarse, compacted gravel
Nominal vent must be at least? 2" nominal pipe size.
Operating/ design pressure
the pressure setting of the venting device. usually 2
shop built tanks are designed for operating pressures
ounces to 1 pound per square inch above atmospheric
between atmospheric and 1.0 psig. in order for air and
pressure.
vapor to be expelled from a tank during filling, the internal
pressure must increase to at least?
Pressure/ vacuum vents remain normally closed only
2 through 16 ounces per square inch or a vacuum of 0.5
when the pressure in the tanks reaches a predetermined
through 1.0 ounces per square inch.
pressure setting of?
In order for air to enter a tank during liquid withdrawal the
It is at least 1 ounce below atmospheric pressure.
internal tank pressure must be reduced to a pont where?
A suitable foundation for vertical tanks can be constructed
with a finished course of clean, compacted sand, gravel
12" beyond the perimeter of the tank.
or crushed rock that is placed over the base course. The
base and the Finnish courses should extend at least?
To provide drainage and settlement the surface of which
6" above the surrounding ground surface.
the tank bottom rests should be at least?
Saddle supports for horizontal tanks may be constructed Steel or reinforced concrete and must be installed on a
of? firm and suitable foundation.
Fire codes require that tank saddles are?
1/7
, ICC AST Installation/ Retrofitting Comprehensive Resource To Help You Ace 2026-2027 Exams Includes
Frequently Tested Questions With ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
higher than 12" above the foundation. have a minimum
fire rating of 2 hours and be constructed of protected
steel, masonary or reinforced concrete.
Roofing felt or expansion joint is not an acceptable elec-
trical isolation for tank saddles.
Reinforced concrete slabs are 6 to 12 inches thick and
constructed to meet 28 day, minimum 3,000 psi strength
requirement.
use #12 TW or THHN thin stranded or solid wire to bond
When grounding a tank use #4 solid or stranded cable.
components
The minimum opening in a vault for personal entry should
30"
be a diameter of at least?
12' above the general grade level and be located at least
5 feet from building openings. emergency vents may dis-
Normal tank vent should extend not less then?
charge inside vault but must remain vapor tight during
normal operation.
Emergency shut ott switch must be located between 20
and 100 feet from the dispensers.
Enclosed wiring within class 1 division 1 areas must use a
maximum 3' long of explosion proof flexible fittings.
Access manways that are intended for personal entry into
a tank must be at least 24" diameter.
When using galvanic cathotic protection for tank bottoms
the anodes should be 1' outside the tank perimeter and place anodes 3 to 5 feet from piping and 2 to 3 feet below
at least 18" lower than the tank bottom. Anodes may be grade but outside of the piping trench in native soil.
placed horizontally or vertically.
If lifting a tank make sure that the angle between the chain
and vertical does not exceed 30 degrees
Galvanic anode installation.
2/7
