2012 Uniform Mechanical Code Ch 7

Front 1

When using the Standard Method, the minimum required volume of indoor combustion air shall be __cubic feet per ___ Btu/h.

(A) 20, 1,000

(B) 30, 2,000

(C) 40, 2,000

(D) 50, 1,000

Back 1

(D) 50, 1,000

Hint 1

701.4.1

Front 2

Combining spaces in different stories, the openings in doors or floors shall have a total minimum free area of ____ square inch(es) per 1,000 Btu/h.

(A) 1

(B) 2

(C) 3

(D) 4

Back 2

(B) 2

Hint 2

701.5(2)

Front 3

Outdoor combustion air openings shall have a minimum of ____ inch(es).

(A) 1

(B) 2

(C) 3

(D) 4

Back 3

(C) 3

Hint 3

701.6

Front 4

Two combustion air openings communicating directly to the outdoors shall commence within ___ inches of the top and ____ inches of the bottom of the enclosure.

(A) 2, 12

(B) 6, 12

(C) 12, 12

(D) 18, 12

Back 4

(C) 12, 12

Hint 4

701.6.1

Front 5

The One Permanent Opening Method requires that equipment shall have a minimum clearance of _____ inch(es) from the front of the appliance.

(A) 1

(B) 2

(C) 4

(D) 6

Back 5

(D) 6

Hint 5

701.6.2

Front 6

Appliances located in a confined space with air taken from outside the structure by means of one vertical or horizontal duct shall have a minimum free area of 1 square inch per ____ Btu/h.

(A) 1,000

(B) 2,000

(C) 3,000

(D) 1 square inch per 4,000

Back 6

(C) 3,000

Hint 6

701.6.2

Front 7

Engineered combustion air installations shall provide adequate supply of combustion, ventilation, and dilution air and shall be approved by the ____.

(A) manufacturer's instructions

(B) Authority Having Jurisdiction

(C) contractor

(D) owner

Back 7

(B) Authority Having Jurisdiction

Hint 7

701.8

Front 8

Where all combustion air is provided by a mechanical air supply system, the combustion air shall be supplied from outdoors at a minimum rate of ____ cubic ft. per 1,000 Btu/h.

(A) 0.10

(B) 0.20

(C) 0.25

(D) 0.35

Back 8

(D) 0.35

Hint 8

701.9

Front 9

Where exhaust fans are installed, additional air shall be provided to replace the ____ air.

(A) primary

(B) secondary

(C) exhausted

(D) combustion

Back 9

(C) exhausted

Hint 9

701.9.1

Front 10

Where the design and free area are not known, it shall be assumed that wood louvers will have _____ percent free area.

(A) 15

(B) 25

(C) 35

(D) 45

Back 10

(B) 25

Hint 10

701.10(1)

Front 11

Where the design and free area are not known, it shall be assumed that metal louvers will have ____ percent free area.

(A) 25

(B) 45

(C) 50

(D) 75

Back 11

(D) 75

Hint 11

701.10(1)

Front 12

_____ louvers shall be interlocked with the equipment so they are proven in the full open position prior to main burner ignition and during main burner operation.

(A) Wood

(B) Metal

(C) Motorized

(D) Mechanical

Back 12

(C) Motorized

Hint 12

701.10(3)

Front 13

Combustion air ducts shall serve a _____ space.

(A) single

(B) duplexed

(C) confined

(D) filtered

Back 13

(A) single

Hint 13

701.11(3)

Front 14

Intakes for combustion air ducts located exterior to the building shall have the lowest side of the combustion air intake at least ____ inches vertically from the adjoining ground level.

(A) 2

(B) 6

(C) 12

(D) 18

Back 14

(C) 12

Hint 14

701.11(6)

Front 15

_____ operated dampers shall not be installed in combustion air openings.

(A) Manually

(B) Mechanical

(C) Louvered

(D) Direct

Back 15

(A) Manually

Hint 15

701.12

Front 16

Horizontal upper combustion air ducts shall not slope _____

(A) upward

(B) downward toward the source of combustion air.

(C) flat

(D) even

Back 16

(B) downward toward the source of combustion air.

Hint 16

701.11(7)

Front 17

The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal. or factory-built chimney shall not be used to supply combustion air unless it is _____ for installation in a solid fuel burning fire place.

(A) approved

(B) designed

(C) specifically prohibited

(D) included

Back 17

(B) designed

Hint 17

701.11(8)

Front 18

The Known Air Infiltration Rate Method requires (15 ft3/ACH) x (ifan11,000 Btu/h) for fan-assisted appliances, but no smaller than ___ cubic feet per 1,000 Btu/h.

(A) 15

(B) 20

(C) 25

(D) 30

Back 18

(D) 30

Hint 18

701.4.2(3)

Front 19

The One Permanent Opening Method requires the equipment have a clearance of at least ____ inch(es) from the side and back.

(A) 1

(B) 3

(C) 5

(D) 8

Back 19

(A) 1

Hint 19

701.6.2

Front 20

Combustion air is not required for _____

(A) natural draft appliances

(B) gas heating appliances

(C) fuel-burning equipment

(D) domestic clothes dryers

Back 20

(D) domestic clothes dryers

Hint 20

701.1(2)

Front 21

Combustion air ducts, except in dwellings, shall be ____

(A) galvanized steel

(B) 6 inch minimum width

(C) vertical only

(D) horizontal only

Back 21

(A) galvanized steel

Hint 21

701.11(1)

Front 22

When determining combustion air requirements, operation of exhaust fans, kitchen ventilating systems, clothes dryers, and fireplaces shall ____

(A) have makeup air provided

(B) be excluded

(C) be in separate rooms

(D) all be in same room

Back 22

(A) have makeup air provided

Hint 22

701.3

Front 23

Combustion air ducts that terminate in an attic shall be screened _____.

(A) at neither end

(B) at the lower end

(C) at the upper end

(D) None of the above apply

Back 23

(D) None of the above apply

Hint 23

701.11(5)

Front 24

Power-actuated movable louvers admitting combustion air may be used _____.

(A) with prior approval

(B) without prior approval

(C) This is not permitted by code

(D) when interlocked with the appliance

Back 24

(D) when interlocked with the appliance

Hint 24

701.10(3)

Front 25

Appliances located in a combined space with all air taken from the inside of the building and from the same story shall have each opening for combustion air sized at 1 square inch per ____ Btu/h but not less than 100 in.2.

(A) 1,000

(B) 2,000

(C) 3,000

(D) 4,000

Back 25

(A) 1,000

Hint 25

701.5(1)

Front 26

Appliances located in a confined space with all air taken from the outside by means of two horizontal ducts shall have each opening sized based on 1 square inch per ____ Btu/h.

(A) 1,000

(B) 2,000

(C) 4,000

(D) 5,000

Back 26

(B) 2,000

Hint 26

701.6.1(2)

Front 27

Dampers in combustion air ducts or plenums are ____

(A) required

(B) fire dampers

(C) prohibited

(D) volume dampers

Back 27

(C) prohibited

Hint 27

701.12

Front 28

The required size of combustion air openings shall be _____.

(A) based on the net free area of each opening

(B) in accordance with the Building Code

(C) sized without louvers and grills in place

(D) as approved by the Authority Having Jurisdiction

Back 28

(A) based on the net free area of each opening

Hint 28

701.10(1)

Front 29

Using the Known Infiltration Method: What's the smallest size room a 100,000 Btu fan-assisted appliance be installed in without any additional combustion air? _____

The ACH is .25 Given: (15 ft3/ACH) x (l'an/1,000 Btu/h) 'fan= fan-assisted appliance input in Btu per hour ACH= air change per hour

(A) 3,300 ft3

(B) 4,800 ft3

(C) 6,000 ft3

(D) 7,200 ft3

Back 29

(C) 6,000 ft3

Hint 29

701.4.2

EQ 701.4.2(2)

Front 30

Using the Known Infiltration Method. What's the smallest size room a 100,000 Btu draft hood-equipped appliance can be installed in without any additional combustion air? ____.

The ACH is .25 Given: (21 ft3/ACH) x (Iother /1,000 Btu/h) 'other =ail appliances other than fan-assisted input in Btu per hour ACH = air change per hour

(A) 4,800 ft3

(B) 5,800 ft3

(C) 8,400 ft3

(D) 9,500 ft3

Back 30

(C) 8,400 ft3

Hint 30

701.4.2

EQ 701.4.2(1)

Front 31

In a room that is 25x25x10, the available volume for combustion air would be ____.

(A) 625 ft2

(B) 2,800 ft3

(C) 5,000 ft3

(D) 6,250 ft3

Back 31

(D) 6,250 ft3

Hint 31

701.4.1