ICC AST Installation/ Retrofitting Exam
Questions and Answers 100% Solved
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
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, 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
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Questions and Answers 100% Solved
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
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, 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
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
