2012 Uniform Mechanical Code Ch 8

Front 1

Appliances other than gas shall be vented in accordance with the manufacturer's instructions and NFPA _____.

(A) 54

(B) 96

(C) 101

(D) 211

Back 1

(D) 211

Hint 1

801.3

Front 2

Equipment not required to be vented includes _____.

(A) listed gas furnaces

(B) listed water heaters

(C) listed ranges

(D) listed unit heaters

Back 2

(C) listed ranges

Hint 2

802.2.1

Front 3

Gas utilization equipment requiring venting shall be permitted to be vented by means of a mechanical draft system of either forced or induced draft design except for _____.

(A) furnaces

(B) water heaters

(C) incinerators

(D) room heaters

Back 3

(C) incinerators

Hint 3

802.3.3.1

Front 4

A listed vented wall furnace would use vents.

(A) Type B

(B) Type B-W

(C) Type L

(D) Single-wall metal pipe

Back 4

(B) Type B-W

Hint 4

Table 802.4

Front 5

No portion of a venting system shall pass through a _____ or furnace plenum.

(A) furnace enclosure

(B) fabricated air duct

(C) refrigerant machinery room

(D) concealed space

Back 5

(B) fabricated air duct

Hint 5

802.3.5

Front 6

Factory-built chimneys used to vent appliances that operate at ____ pressure shall be listed for such application.

(A) positive

(B) negative

(C) neutral

(D) other than positive

Back 6

(A) positive

Hint 6

802.5.1

Front 7

A chimney for residential-type or low-heat gas utilization equipment shall extend at least ____ feet above the highest point where it passes through a roof of a building.

(A) 2

(B) 3

(C) 4

(D) 5

Back 7

(B) 3

Hint 7

802.5.4

Front 8

A chimney for medium-heat equipment shall extend at least ____ feet higher than any portion of any building within ____ feet.

(A) 5, 10

(B) 10, 10

(C) 10, 25

(D) 10, 30

Back 8

(C) 10, 25

Hint 8

802.5.4.1

Front 9

The minimum height of a chimney shall be at least ____ feet above the highest connected draft hood or flue collar.

(A) 3

(B) 5

(C) 6

(D) 8

Back 9

(B) 5

Hint 9

802.5.4.2

Front 10

Where a chimney serves both gas and liquid fuel, and two or more openings are provided, the openings shall be ____.

(A) at the same level

(B) at different levels

(C) on opposite sides

(D) on a horizontal section

Back 10

(B) at different levels

Hint 10

802.5.8.1

Front 11

A listed combination gas and solid fuel-burning appliance connected to a single chimney flue shall be equipped with a(n) ____ to shut off the gas to the main burner.

(A) manual reset device

(B) automatic reset device

(C) emergency shutoff

(D) interrupting valve

Back 11

(A) manual reset device

Hint 11

802.5.8.2

Front 12

The remaining space surrounding a chimney liner, vent, or plastic piping installed within a masonry chimney flue ____ to vent another appliance.

(A) may be used

(B) needs jurisdictional approval

(C) shall not be used

(D) can be used if size is adequate

Back 12

(C) shall not be used

Hint 12

802.5.11

Front 13

A gas vent passing through a roof shall extend ____ a roof flashing, roof jack, or roof thimble and terminate with a ____.

(A) into, suitable cap

(B) through, termination cap a

(C) within, metal covering

(D) entirely through, listed termination cap

Back 13

(D) entirely through, listed termination cap

Hint 13

802.6

Front 14

Any angle greater than degrees from the vertical direction is considered

(A) 30, vertical

(B) 45, horizontal

(C) 60, vertical

(D) 75, horizontal

Back 14

(B) 45, horizontal

Hint 14

802.6.1

Front 15

The total horizontal distance of a vent plus the horizontal vent connector shall not exceed ____ percent of the vertical height of the vent.

(A) 25

(B) 50

(C) 75

(D) 100

Back 15

(C) 75

Hint 15

802.6.1

Front 16

Vents serving fan-assisted combustion system appliances shall be installed in accordance with the ____ or other approved engineering methods.

(A) installation instructions and Section 803

(B) vent manufacturer's and GAMA tables

(C) UL venting tables and Section 803

(D) installation instructions and GAMA tables

Back 16

(A) installation instructions and Section 803

Hint 16

802.6.1

Front 17

A 14 inch diameter gas vent extending through a metal flashing less than 8 feet from a vertical wall must extend at least ____ feet above the vertical wall.

(A) 1.25

(B) 1.5

(C) 1.75

(D) 2

Back 17

(D) 2

Hint 17

802.6.2(1)

Front 18

A Type B or Type L gas vent shall terminate at least ____ feet in vertical height above the highest connected draft hood or flue collar.

(A) 4

(B) 5

(C) 6

(D) 8

Back 18

(B) 5

Hint 18

802.6.2.1

Front 19

A Type BW gas vent shall terminate at least ____ feet above the bottom of the wall furnace.

(A) 10

(B) 10.5

(C) 12

(D) 14

Back 19

(C) 12

Hint 19

802.6.2.2

Front 20

A gas vent extending through an outside wall shall not terminate adjacent to the wall or below ______.

(A) eaves or parapets

(B) street grates

(C) foliage

(D) roof gutters

Back 20

(A) eaves or parapets

Hint 20

802.6.2.3

Front 21

For sizing an individual gas vent for a single draft hood-equipped appliance, the effective area of the vent connector and the gas vent shall not be less than the area of the draft hood outlet or greater than ____ times the draft hood outlet area.

(A) 4

(B) 5

(C) 6

(D) 7

Back 21

(D) 7

Hint 21

802.6.3.1(3)

Front 22

For sizing a gas vent connected to two appliances with draft hoods, the area of the vent shall be not less than the larger hood plus ____ percent of the smaller draft hood outlet.

(A) 40

(B) 50

(C) 60

(D) 75

Back 22

(B) 50

Hint 22

802.6.3.1(4)

Front 23

For sizing gas vents for Categories II, III, and IV appliances, the gas vent shall comply with ____

(A) Section 803.0

(B) standard venting practices

(C) the equipment manufacturer's instructions

(D) the National Fuel Gas Code

Back 23

(C) the equipment manufacturer's instructions

Hint 23

802.6.3.2

Front 24

A common vent serving Category I appliances in multistory installations is permitted, providing the venting system is designed and installed in accordance with _____.

(A) approved engineering methods and this code

(B) the equipment manufacturer's installation instructions

(C) standard venting practices (D) the local jurisdiction's Fire Code

Back 24

(A) approved engineering methods and this code

Hint 24

802.6.4

Front 25

Single-wall metal pipe shall not be used ______ for venting gas appliances.

(A) unless approved by the Authority Having Jurisdiction (B) outdoors in cold climates (C) in high humidity locations (D) unless positively sealed

Back 25

(B) outdoors in cold climates

Hint 25

802.7.1

Front 26

Single-wall metal pipe used to vent gas appliances shall not originate in any _____.

(A) commercial kitchen

(B) furnace enclosure

(C) unoccupied attic or concealed space

(D) unheated space

Back 26

(C) unoccupied attic or concealed space

Hint 26

802.7.3.2

Front 27

A mechanical draft venting system shall terminate at least ___ feet above any forced air inlet within 10 feet.

(A) 3

(B) 4

(C) 5

(D) 6

Back 27

(A) 3

Hint 27

802.8.1

Front 28

A mechanical draft venting system, of other than direct-vent type, shall terminate at least ____ feet below or horizontally from a door, operable window, or gravity air inlet into any building.

(A) 1

(B) 2

(C) 3

(D) 4

Back 28

(D) 4

Hint 28

802.8.2

Front 29

The bottom of any mechanical draft or direct-vent terminal shall be at least ____ inches above grade.

(A) 6

(B) 9

(C) 12

(D) 18

Back 29

(C) 12

Hint 29

802.8.2

Front 30

A vent connector shall be made of noncombustible ____ material capable of withstanding the vent gas temperature produced by the gas utilization equipment.

(A) durable

(B) metallic

(C) metal or plastic

(D) corrosion-resistant

Back 30

(D) corrosion-resistant

Hint 30

802.10.1.1

Front 31

Vent connectors shall not be covered with ____.

(A) insulation

(B) paint

(C) a combustible surface

(D) building materials

Back 31

(A) insulation

Hint 31

802.10.1.3(2)

Front 32

A low-heat appliance with a single-wall galvanized steel vent connector that is 7 inches in diameter shall have a connector thickness of not less than ____ inch.

(A) 0.019

(B) 0.023

(C) 0.029

(D) 0.034

Back 32

(B) 0.023

Hint 32

Table 802.10.1.4

Front 33

A medium-heat appliance with a steel vent connector that is 15 inches in diameter shall have a connector thickness of not less than ____ inch.

(A) 0.034

(B) 0.053

(C) 0.067

(D) 0.093

Back 33

(C) 0.067

Hint 33

Table 802.10.1.5

Front 34

Where the size of a Category I vent connector is increased to overcome installation limitations and to obtain capacity equal to equipment input, the size increase shall be made at the ____.

(A) vent connection

(B) draft hood outlet

(C) vent manifold

(D) common vent

Back 34

(B) draft hood outlet

Hint 34

802.10.2.4

Front 35

A vent connector shall slope upward at a slope of no less than ___ inch per foot.

(A) 1/8

(B) 1/4

(C) 1/2

(D) 1

Back 35

(B) 1/4

Hint 35

802.10.6

Front 36

Vent connector supports shall be _____.

(A) adequate for the design and weight of the material

(B) placed at intervals 6 feet or less

(C) placed at intervals 8 feet or less

(D) placed at intervals 10 feet or less inch per foot.

Back 36

(A) adequate for the design and weight of the material

Hint 36

802.10.8

Front 37

A vent connector shall not pass through any ceiling, floor, or _____.

(A) partition

(B) masonry wall

(C) fire-resistance-rated wall

(D) exterior wall

Back 37

(C) fire-resistance-rated wall

Hint 37

802.10.12

Front 38

Draft hoods and barometric draft regulators shall be installed ____ the equipment so as to prevent pressure differences between the draft hood or regulator and the combustion air supply.

(A) within 5 feet of

(B) within 8 feet of

(C) within 10 feet of

(D) in the same room or enclosure as

Back 38

(D) in the same room or enclosure as

Hint 38

802.12.4

Front 39

Automatically operated vent dampers shall be of ____.

(A) a listed type

(B) the size and model recommended by the equipment manufacturer

(C) a voltage suitable for the appliance

(D) a metallic type

Back 39

(A) a listed type

Hint 39

802.14

Front 40

When using the venting tables for multiple appliance venting outlined in Section 803.0, the horizontal portion of the vent connector is generally limited to ____ inches in length per inch of connector diameter or reductions in capacity apply.

(A) 12

(B) 18

(C) 24

(D) 36

Back 40

(B) 18

Hint 40

803.2.1

Front 41

If a listed corrugated chimney liner is installed, the maximum capacity shall be ____ for Type B vents.

(A) the same as the table capacity

(B) reduced by 5 percent of the table capacity

(C) reduced by 10 percent of the table capacity

(D) reduced by 20 percent of the table capacity.

Back 41

(D) reduced by 20 percent of the table capacity.

Hint 41

803.2.18

Front 42

If the vent connectors are combined prior to entering the vertical portion of the common vent, the maximum capacity of the common vent _____.

(A) shall be reduced by 10 percent

(B) shall be reduced by 15 percent

(C) shall be reduced by 20 percent

(D) vent remains the same

Back 42

(A) shall be reduced by 10 percent

Hint 42

803.2.3

Front 43

Connector rise is measured from the draft hood or connector collar to the ____.

(A) lowest point at which the gas streams come together

(B) centerline where the gas streams come together

(C) outlet of the common vent (D) base of the common vent

Back 43

(B) centerline where the gas streams come together

Hint 43

803.2.10

Front 44

Interpolation for calculating capacities _____.

(A) is not permitted

(B) is permitted for dimensions that fall between table entries (C) must be approved by Authority Having Jurisdiction (D) is permitted if the vent size is increased

Back 44

(B) is permitted for dimensions that fall between table entries

Hint 44

803.1.16

Front 45

Chimney venting systems using mechanical draft shall be sized accordance with _____.

(A) Category I venting tables

(B) manufacturer's installation instructions

(C) approved engineering methods

(D) NFPA 211

Back 45

(C) approved engineering methods

Hint 45

802.6.3.3

Front 46

Through-the-wall vents for Category II and Category IV and non-categorized condensing appliances shall not terminate over _____.

(A) private walkways

(B) public walkways

(C) building exists

(D) outdoor air intake openings

Back 46

(B) public walkways

Hint 46

802.8.4

Front 47

Unless a vertical vent is designed in accordance with approved engineering methods, the flow area of the vent shall not exceed ____ times the flow area of the flue collar or draft hood outlet area of the appliances.

(A) four

(B) five

(C) six

(D) seven

Back 47

(D) seven

Hint 47

803.1.9

Front 48

The minimum cross sectional area of a common vent shall be _____ connector.

(A) two times the area of the largest vent

(B) four times the area of the largest vent

(C) equal to or larger than the smallest vent

(D) equal to or greater than the area of the largest

Back 48

(D) equal to or greater than the area of the largest

Hint 48

803.2.6