QUESTIONS AND ANSWERS
For a gas appliance, the volume of gas to be provided, in cubic feet per hour, may be determined
___________________
A. where an input rating is not indicated, from the gas supplier
B. where an input rating is not indicated, from the appliance manufacturer
C. directly from the manufacturers input ratings of the appliances served
D. all of the above ✅✅correct answ-D. all of the above
Hazardous exhaust systems shall be ________ other types of exhaust systems
A. used in conjunction with
B. installed higher than
C. independent of
D. none of these ✅✅correct answ-C. independent of
A manually or automatically controlled device to regulate draft or the rate of flow of air or
combustion gases
A. air valve
B. power air controller
C. damper
D. check valve ✅✅correct answ-C. Damper
In wood structures, notches on the end of the joists shall not exceed ___________ the joist depth.
A. one fourth
B. 6% of
C. 1/2 of
D. 10% of ✅✅correct answ-A. one-fourth
Underground inspection shall be made after trenches or ditches are excavated and bedded, piping
installed, and ___________ backfill is put in place. When excavated soil contains rocks, broken
concrete, frozen chunks, and other rubble that would damage or break the piping or cause corrosive
action, clean backfill shall be on the jobsite.
,A. after
B. before
C. as the ✅✅correct answ-B. before
Ducts and air transfer openings constructed of approved materials, in accordance with Section 603,
that penetrate the ceiling membrane of a fire-resistance - rated floor/ceiling or roof/ceiling shall be
protected with which of the following:
A. a shaft enclosure in accordance with Sections 707 of the International Building Code
B. a listed ceiling radiation damper installed at the ceiling line where a duct penetrates the ceiling of
a fire-resistance-rated floor/ceiling or roof/ceiling assembly
C. a listed ceiling radiation damper installed at the ceiling line where a diffuser with no duct attached
penetrates the ceiling of a fire-resistance-rated floor/ceiling or roof/ceiling assembly
D. one of the above ✅✅correct answ-D. one of the above
For duct conveying explosive or flammable vapors, fumes or dust, the termination point of exhaust
outlets and ducts discharging to the outdoors shall be located a minimum distance of ________
above adjoining grade
A. 10 feet
B. 20 feet
C. 30 feet
D. 40 feet ✅✅correct answ-A. 10 feet
Type 1 hoods shall be secured in place by ____________
A. galvanized steel brackets
B. wood, plastic, or metal supports
C. metal supports
D. noncombustible supports ✅✅correct answ-D. noncombustible supports
In hydronic piping systems shut offs shall be installed on _______ of a pressure reducing valve
A. the supply side
B. the return side
C. both sides
D. any of these ✅✅correct answ-C. both sides
, Every steam boiler shall have a __________
A. water-gauge glass and a pressure gauge
B. water-gauge glass
C. pressure gauge
D. A or B and C
E. none of these ✅✅correct answ-D. A or B and C
The minimum chimney connector thickness for a low-heat appliance with a 6" diameter connecter is:
A. 16 gauge
B. 24 gauge
C. 12 gauge
D. 10 gauge ✅✅correct answ-B. 24 gauge
The gauging of inside oil tanks by means of measuring sticks shall _________
A. be the method of choice
B. be permitted
C. not be permitted ✅✅correct answ-C. not be permitted
Provisions shall be made to prevent the formation of condensation on the ________ of any duct
A. interior
B. exterior
C. surface
D. none of these ✅✅correct answ-B. exterior
Solid fuel-burning appliances shall be provided with combustion air in accordance with the appliance
________
A. BTU rating
B. IFC requirements
C. manufacturers installment instructions
D. none of these ✅✅correct answ-C. manufacturers installment instructions