Sprinkler test Question And Correct
Solutions
Class 1 commodity is more combustible then class 3 - Answer -✔✔False
All holes for lag screws shall be pre-drilled __________ inch less in diameter than the
max. root diameter of the lag screw thread. - Answer -✔✔1/8in
Coach screws shall not be used for support of pipes larger than ________ inch in
diameter. - Answer -✔✔4
Distance between supports on a riser shall not exceed _________ feet. - Answer -
✔✔25ft
Fire department connections shall be installed so that they are located not less than
______ nor more than ______ above the level of the adjoining ground, sidewalk, or
grade surface. - Answer -✔✔18in , 48in
Flexible couplings shall be installed on risers within_____ inches above and _____
inches below the floor in multi-story buildings. - Answer -✔✔12in and 24in
For ESFR sprinklers, the clearance between the deflector and the top of storage shall
be ____ inches or greater - Answer -✔✔36in
For extra hazard occupancies, the maximum distance between sprinklers shall not
exceed ______ feet - Answer -✔✔12ft
Hangers shall be designed to support _______ times the weight of water-filled pipe plus
________ at each point of piping support. - Answer -✔✔5 and 250
Hose connections and hose stations shall be unobstructed and shall be located not less
than ______ nor more than ______ above the floor.
Answers - Answer -✔✔36in, 60in
How high can storage be before it is considered high-piled storage? - Answer -✔✔12ft
How shall the sprinkler head protecting the dry pipe valve enclosure be fed? - Answer -
✔✔From the dry side of the system
In residential applications, fire department connections are required to be a minimum of
_______ in size. - Answer -✔✔1 1/2"
, Is the use of reconditioned valves and devices as replacement equipment in existing
systems allowed? - Answer -✔✔Yes
Joints for the connection of copper pipe an fittings on dry and preaction systems shall
be brazed. - Answer -✔✔True
Lateral sway bracing shall be spaced at a minimum of __________ feet on center on all
feed and cross mains regardless of size and on all piping 2 1/2" and larger - Answer -
✔✔40ft
Lateral sway bracing shall not apply to pipes individually supported by rods less than
______ inches long measured between the top of the pipe and the point of attachment
to the building structure. - Answer -✔✔6in
Longitudinal sway bracing spaced at a maximum of ________ feet on center shall be
provided for feed and cross mains. - Answer -✔✔80ft
No clearance is required if flexible couplings are located within _____ each side of a
wall, floor, platform, or foundation. - Answer -✔✔12in
Ordinary hazard occupancy protection areas shall not exceed ________ square feet. -
Answer -✔✔130
Pressure tanks should be kept ________ full of water. - Answer -✔✔2/3
Pressure tanks should maintain an air pressure of at least ______ psi. - Answer -
✔✔75PSI
Risers shall be supported by pipe clamps or by hangers located on the horizontal
connections within ________ inches of the centerline of the riser. - Answer -✔✔24in
Screwed unions shall not be used on pipe larger than _________ inch - Answer -✔✔2in
Sprinklers installed where maximum ambient ceiling temperatures do not exceed 100
degrees farenheit shall be __________ temperature rated sprinklers. - Answer -
✔✔Ordinary
Sprinklers under glass or plastic skylights exposed to direct rays of the sun shall be of
____________ temperature classification. - Answer -✔✔intermediate
Starter lengths less than ____ feet shall not require a hanger - Answer -✔✔6ft
The distance between the last lateral sway brace and the end of the pipe shall not
exceed _______ feet - Answer -✔✔6
Solutions
Class 1 commodity is more combustible then class 3 - Answer -✔✔False
All holes for lag screws shall be pre-drilled __________ inch less in diameter than the
max. root diameter of the lag screw thread. - Answer -✔✔1/8in
Coach screws shall not be used for support of pipes larger than ________ inch in
diameter. - Answer -✔✔4
Distance between supports on a riser shall not exceed _________ feet. - Answer -
✔✔25ft
Fire department connections shall be installed so that they are located not less than
______ nor more than ______ above the level of the adjoining ground, sidewalk, or
grade surface. - Answer -✔✔18in , 48in
Flexible couplings shall be installed on risers within_____ inches above and _____
inches below the floor in multi-story buildings. - Answer -✔✔12in and 24in
For ESFR sprinklers, the clearance between the deflector and the top of storage shall
be ____ inches or greater - Answer -✔✔36in
For extra hazard occupancies, the maximum distance between sprinklers shall not
exceed ______ feet - Answer -✔✔12ft
Hangers shall be designed to support _______ times the weight of water-filled pipe plus
________ at each point of piping support. - Answer -✔✔5 and 250
Hose connections and hose stations shall be unobstructed and shall be located not less
than ______ nor more than ______ above the floor.
Answers - Answer -✔✔36in, 60in
How high can storage be before it is considered high-piled storage? - Answer -✔✔12ft
How shall the sprinkler head protecting the dry pipe valve enclosure be fed? - Answer -
✔✔From the dry side of the system
In residential applications, fire department connections are required to be a minimum of
_______ in size. - Answer -✔✔1 1/2"
, Is the use of reconditioned valves and devices as replacement equipment in existing
systems allowed? - Answer -✔✔Yes
Joints for the connection of copper pipe an fittings on dry and preaction systems shall
be brazed. - Answer -✔✔True
Lateral sway bracing shall be spaced at a minimum of __________ feet on center on all
feed and cross mains regardless of size and on all piping 2 1/2" and larger - Answer -
✔✔40ft
Lateral sway bracing shall not apply to pipes individually supported by rods less than
______ inches long measured between the top of the pipe and the point of attachment
to the building structure. - Answer -✔✔6in
Longitudinal sway bracing spaced at a maximum of ________ feet on center shall be
provided for feed and cross mains. - Answer -✔✔80ft
No clearance is required if flexible couplings are located within _____ each side of a
wall, floor, platform, or foundation. - Answer -✔✔12in
Ordinary hazard occupancy protection areas shall not exceed ________ square feet. -
Answer -✔✔130
Pressure tanks should be kept ________ full of water. - Answer -✔✔2/3
Pressure tanks should maintain an air pressure of at least ______ psi. - Answer -
✔✔75PSI
Risers shall be supported by pipe clamps or by hangers located on the horizontal
connections within ________ inches of the centerline of the riser. - Answer -✔✔24in
Screwed unions shall not be used on pipe larger than _________ inch - Answer -✔✔2in
Sprinklers installed where maximum ambient ceiling temperatures do not exceed 100
degrees farenheit shall be __________ temperature rated sprinklers. - Answer -
✔✔Ordinary
Sprinklers under glass or plastic skylights exposed to direct rays of the sun shall be of
____________ temperature classification. - Answer -✔✔intermediate
Starter lengths less than ____ feet shall not require a hanger - Answer -✔✔6ft
The distance between the last lateral sway brace and the end of the pipe shall not
exceed _______ feet - Answer -✔✔6
