ICC AST INSTALLATION/RETROFITTING FINAL
EXAM SCRIPT 2026 COMPLETE QUESTIONS
AND ANSWERS 100% CORRECT
◉ pressure vacuum vents remain normally closed, only opened when the
pressure inside the tank reaches. Answer: 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. Answer: 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. Answer: 2" nominal pipe size.
◉ operating/ design pressure
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.
Answer: the pressure setting of the venting device. usually 2 ounces to 1
pound per square inch above atmospheric pressure.
, ◉ pressure/ vacuum vents remain normally closed only when the
pressure in the tanks reaches a predetermined pressure setting of.
Answer: 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. Answer: 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. Answer: 12" beyond the perimeter of the tank.
◉ to provide drainage and settlement the surface of which the tank
bottom rests should be at least. Answer: 6" above the surrounding
ground surface.
◉ Saddle supports for horizontal tanks may be constructed of. Answer:
Steel or reinforced concrete and must be installed on a firm and suitable
foundation.
◉ Fire codes require that tank saddles are. Answer: higher than 12"
above the foundation. have a minimum fire rating of 2 hours and be
constructed of protected steel, masonary or reinforced concrete.
EXAM SCRIPT 2026 COMPLETE QUESTIONS
AND ANSWERS 100% CORRECT
◉ pressure vacuum vents remain normally closed, only opened when the
pressure inside the tank reaches. Answer: 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. Answer: 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. Answer: 2" nominal pipe size.
◉ operating/ design pressure
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.
Answer: the pressure setting of the venting device. usually 2 ounces to 1
pound per square inch above atmospheric pressure.
, ◉ pressure/ vacuum vents remain normally closed only when the
pressure in the tanks reaches a predetermined pressure setting of.
Answer: 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. Answer: 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. Answer: 12" beyond the perimeter of the tank.
◉ to provide drainage and settlement the surface of which the tank
bottom rests should be at least. Answer: 6" above the surrounding
ground surface.
◉ Saddle supports for horizontal tanks may be constructed of. Answer:
Steel or reinforced concrete and must be installed on a firm and suitable
foundation.
◉ Fire codes require that tank saddles are. Answer: higher than 12"
above the foundation. have a minimum fire rating of 2 hours and be
constructed of protected steel, masonary or reinforced concrete.
