ICC AST Installation/ Retrofitting Exam
Q&A 100% Guaranteed Success
to allow passage between tanks for inspection provide a minimum of? - ✔✔1/6
of the sum of the adjacent tank diameters, but not less then 3 feet.
pressure vacuum vents remain normally closed, only opened when the pressure
inside the tank reaches? - ✔✔2 through 16 ounces per square Inch or a vacuum
of 0.5 through 1.0 ounces per square inch.
the primary criterion for tank foundation design is the allowable bearing
pressure of soil. - ✔✔this ranges from 1,000 pounds per square foot for soft clay
or 4,000 for coarse, compacted gravel
nominal vent must be at least? - ✔✔2" nominal pipe size.
shop built tanks are designed for operating pressures between atmospheric and
1.0 psig. in order for air and vapor to be expelled from a tank during filling, the
internal pressure must increase to at least? - ✔✔the pressure setting of the
venting device. usually 2 ounces to 1 pound per square inch above atmospheric
pressure.
1|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
, pressure/ vacuum vents remain normally closed only when the pressure in the
tanks reaches a predetermined pressure setting of? - ✔✔2 through 16 ounces
per square inch or a vacuum of 0.5 through 1.0 ounces per square inch.
in order for air to enter a tank during liquid withdrawal the internal tank
pressure must be reduced to a pont where? - ✔✔It is at least 1 ounce below
atmospheric pressure.
A suitable foundation for vertical tanks can be constructed with a finished
course of clean, compacted sand, gravel or crushed rock that is placed over the
base course. The base and the Finnish courses should extend at least? - ✔✔12"
beyond the perimeter of the tank.
to provide drainage and settlement the surface of which the tank bottom rests
should be at least? - ✔✔6" above the surrounding ground surface.
Saddle supports for horizontal tanks may be constructed of? - ✔✔Steel or
reinforced concrete and must be installed on a firm and suitable foundation.
Fire codes require that tank saddles are? - ✔✔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 electrical isolation for tank saddles.
2|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
Q&A 100% Guaranteed Success
to allow passage between tanks for inspection provide a minimum of? - ✔✔1/6
of the sum of the adjacent tank diameters, but not less then 3 feet.
pressure vacuum vents remain normally closed, only opened when the pressure
inside the tank reaches? - ✔✔2 through 16 ounces per square Inch or a vacuum
of 0.5 through 1.0 ounces per square inch.
the primary criterion for tank foundation design is the allowable bearing
pressure of soil. - ✔✔this ranges from 1,000 pounds per square foot for soft clay
or 4,000 for coarse, compacted gravel
nominal vent must be at least? - ✔✔2" nominal pipe size.
shop built tanks are designed for operating pressures between atmospheric and
1.0 psig. in order for air and vapor to be expelled from a tank during filling, the
internal pressure must increase to at least? - ✔✔the pressure setting of the
venting device. usually 2 ounces to 1 pound per square inch above atmospheric
pressure.
1|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
, pressure/ vacuum vents remain normally closed only when the pressure in the
tanks reaches a predetermined pressure setting of? - ✔✔2 through 16 ounces
per square inch or a vacuum of 0.5 through 1.0 ounces per square inch.
in order for air to enter a tank during liquid withdrawal the internal tank
pressure must be reduced to a pont where? - ✔✔It is at least 1 ounce below
atmospheric pressure.
A suitable foundation for vertical tanks can be constructed with a finished
course of clean, compacted sand, gravel or crushed rock that is placed over the
base course. The base and the Finnish courses should extend at least? - ✔✔12"
beyond the perimeter of the tank.
to provide drainage and settlement the surface of which the tank bottom rests
should be at least? - ✔✔6" above the surrounding ground surface.
Saddle supports for horizontal tanks may be constructed of? - ✔✔Steel or
reinforced concrete and must be installed on a firm and suitable foundation.
Fire codes require that tank saddles are? - ✔✔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 electrical isolation for tank saddles.
2|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
