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35 Cards in this Set

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A separate and distinct ventilation or exhaust system shall be provided for



(A) noxious gases


(B) flammable vapors


(C) corrosive fumes


(D) incompatible materials

(D) incompatible materials

505.1.2

Duct systems operating at elevated temperatures above 140°F (60°C) shall have clearances from combustible materials of not less than inch(es).



(A) 18


(B) 2


(C) 4


(D) 6

(A) 18

507

Every exhaust duct conveying explosive or flammable vapors, fumes, or dusts shall terminate outside of the building with clearance to any openable window or fresh air intake of not less than feet.



(A) 3


(B) 5


(C) 8


(D) 10

(D) 10

506.9

Galvanized steel and aluminum ducts shall not be used when the temperature of the material exceeds ____ deg F.




(A) 450


(B) 400


(C) 800


(D) 1,000

(B) 400

506.1

For ducts conveying non-particulate matter, accessible clean-outs shall be provided at intervals of ____ feet.




(A) 5


(B) 8


(C) 10


(D) 12

(C) 10

506.3

Aluminum ducts may be used on in a Class ____ system.




(A) 1


(B) 2


(C) 3


(D) 4

(A) 1

506.1

Approved nonmetallic hoods and duct systems may be used for Class 5 corrosive systems when the corrosive mixture is



(A) nonflammable


(B) fine light dust


(C) noxious gases, fumes, and vapors


(D) corrosive fumes and vapors

(A) nonflammable

505.4

Liquid adhesive coatings used on listed air filters shall be of a type that will



(A) impede air flow


(B) clog easily


(C) generate noise


(D) have a flash point of 350°F (177°C) or higher

(D) have a flash point of 350°F (177°C) or higher

503.3

Product conveying ventilation or exhaust systems shall be installed to control, capture, and remove emissions generated from product use or handling when required by the -



(A) mechanical engineer


(B) Uniform Mechanical Code


(C) Building Code or Fire Code (D) architect

(C) Building Code or Fire Code

505.1

Fittings in a Class 2, 3, and 4 product conveying duct system shall be not less than than the thickness required for straight runs.



(A) 1


(B) 2


(C) 3


(D) 4

(B) 2

506.3

Sprinklers or other fire protection devices shall be installed within ducts having a cross-sectional dimension in excess of ___ inches when conveying flammable vapors or fumes



(A) 6


(B) 8


(C) 10


(D) 12

(C) 10

506.6

To avoid vibration and stress on the duct, hangers and supports shall be securely fastened to



(A) supports exposed


(B) sprinklers on the fire-protection


(C) Type 316 SS


(D) the building or structure

(D) the building or structure

506.5.3

When a domestic clothes dryer is installed in a closet, a minimum opening of square inches for makeup air shall be provided.



(A) 4


(B) 6


(C) 24


(D) 100

(D) 100

504.3.1

Air circulation shall be permitted to be provided by leaving all edges of the wall protector open with at least a(n)



(A) 10 inches from the duct


(B) 6 inch air gap


(C) 18 inch air gap


(D) 1 inch air gap

(D) 1 inch air gap

506.7.2

With all clearance in reduction systems using a ventilated air space, air circulation shall be provided as described in Table



(A) 802.7.3.4(2)


(B) 506.2(1)


(C) 303.3(1)


(D) 506.7

(D) 506.7

CH 5

When ducts are installed in a location where they are subject to physical damage, the ducts shall be protected by



(A) another duct system


(B) painting the duct


(C) 2" by 2" by 1/4" angle


(D) suitable guards

(D) suitable guards

506.8

Clothes dryers moisture exhaust ducts shall not extend into or



(A) through 1 hour wall separation


(B) under the structure


(C) in the laundry room


(D) through ducts or plenums

(D) through ducts or plenums

504.3

Product-conveying ducts shall terminate a minimum of feet above adjoining grade.



(A) 3


(B) 6


(C) 10


(D) 30

(C) 10

506.9

Motors for fans used to convey flammable vapors or dusts shall be located



(A) above the ceiling


(B) above the roof


(C) outside the duct


(D) inside the duct

(C) outside the duct

503.1

Electrical equipment used in operations that generate explosive or flammable vapors, fumes, or dusts shall be interlocked with the



(A) fire alarm system


(B) fire control center


(C) ventilation system


(D) A and C

(C) ventilation system

503.1

Exhaust hoods of steel shall have a base metal thickness not less than ___ gauge duct systems for class 1 and 5.



(A) 14


(B) 18


(C) 22


(D) 24

(C) 22

505.4

Flexible duct connectors for clothes dryer exhausts shall not exceed ___ feet in length.



(A) 3


(B) 4


(C) 5


(D) 6

(D) 6

504.3.1.1

In ducts having a cross-sectional dimension exceeding 10 inches that convey flammable vapors or fumes, sprinklers shall be installed at ___ foot intervals in horizontal ducts and at changes in direction.



(A) 6


(B) 8


(C) 10


(D) 12

(D) 12

506.6

In general, ducts used for domestic kitchen range ventilation and domestic clothes dryers shall be of and shall have surfaces.



(A) metal, smooth exterior


(B) plastic, smooth exterior


(C) metal, smooth interior


(D) metal, corrugated interior

(C) metal, smooth interior

504.3.1.1

For product-conveying service, galvanized steel and aluminum ducts shall not be used when the temperature of the material being conveyed exceeds ___ degrees F.



(A) 300


(B) 350


(C) 400


(D) 450

(C) 400

506.1

Environmental air ducts shall terminate at least



(A) 3 feet from the property line


(B) 10 feet from the property line


(C) 10 feet from openings in the building


(D) 10 feet above adjoining grade


(A) 3 feet from the property line

504.5

Ventilation systems used for removal of vapors, gases, and smoke shall be designed



(A) to use radial blade fans only (B) to use balancing devices such as dampers


(C) by the constant velocity or equal friction methods


(D) to convey a minimum of 4,000 FPM air movement within the system

(C) by the constant velocity or equal friction methods

505.2

Not more than of 6 inch diameter PVC coupling may protrude above the concrete floor surface.



(A) 6 inches


(B) 1 inch


(C) 24 inches


(D) no restriction

(B) 1 inch

504.2

Underfloor trenches in which PVC exhaust ducts are installed shall have backfill material composed of



(A) solvent cement only


(B) 3 inches of concrete or cement


(C) sand or gravel


(D) A and C

(C) sand or gravel

504.2

Ducts used in central vacuum cleaning systems within a dwelling unit shall be constructed of materials in compliance with the applicable standards referenced in


(A) the Building Code


(B) the Fire Code


(C) Chapter 17


(D) the Plumbing Code

(C) Chapter 17

506.1.3

When a closet is designed for the installation of a clothes dryer, a minimum opening of square inches for makeup air shall be provided in the door or by other approved means.



(A) 50


(B) 75


(C) 150


(D) 100

(D) 100

504.3.1

The use of rectangular ducts for conveying particulates shall be



(A) prohibited


(B) subject to the approval of the building official


(C) allowed on Class 1 systems (D) allowed if the duct is 1 gauge thicker than round duct

(B) subject to the approval of the building official

506.2

Ducts for exhausting clothes dryers shall not be connected or installed with



(A) draw bands


(B) solder


(C) metal screws or fasteners that will obstruct the flow


(D) snap lock joints

(C) metal screws or fasteners that will obstruct the flow

504.3

When a compartment or space for a domestic clothes dryer is provided, a minimum diameter moisture exhaust duct of approved material shall be installed.



(A) 3 inch


(B) 6 inch


(C) 5 inch


(D) 4 inch

(D) 4 inch

504.3.1

Aluminum construction may be used in Class 1 duct systems only. The thickness of aluminum ducts shall be at least than the gauges required for steel ducts.



(A) 1 Brown & Sharp gauge thinner


(B) 1 Brown & Sharp gauge thicker


(C) 2 Brown & Sharp gauges thicker


(D) be plastic-lined

(C) 2 Brown & Sharp gauges thicker

506.2