with Complete Solutions
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 - ANSWER-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 - ANSWER-B. before
,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 - ANSWER-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 - ANSWER-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 - ANSWER-C. damper
,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 - ANSWER-D. one of the above
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 - ANSWER-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 - ANSWER-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 - ANSWER-B. exterior
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 - ANSWER-A. 10 feet