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Home Inspection > Chimneys, Stoves, and Fireplaces > Flashcards

Chimneys, Stoves, and Fireplaces Flashcards

1
Q

Footings for masonry chimneys must be made of concrete or solid masonry and be at least this thick?

A

12-inches.

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2
Q

How far should the footing for a masonry chimney extend beyond the face of the fireplace or foundation wall on all sides?

A

At least 6- inches

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3
Q

Footings for masonry fireplaces must extend below what line?

A

The frost line.

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4
Q

How far should house framing components be from the chimney wall?

A

At least 2- inches

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5
Q

What height rule should masonry chimneys follow?

A

The 3, 2, 10

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6
Q

Where should inlets on a masonry chimney enter?

A

From the side.

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7
Q

If single-wall metal pipe is used as a vent connector, what is the minimum clearance to combustibles?

A

18 inches

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8
Q

Which chimneys must be lined?

A

All masonry

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9
Q

Unlined chimneys are not safe. Any chimney without a flue lining should be reported as a what?

A

A Material defect

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10
Q

What’s the minimum standard thickness for a flue lining?

A

5/8-inch thick.

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11
Q

Clay flue lining should protrude a minimum of how far above the top brick course or masonry cap?

A

4 inches.

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12
Q

Wood-burning, gas, or oil applications need a flue vent with what type of liner?

A

Stainless steel

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13
Q

What is an inexpensive alternative vent material only for certain medium-efficiency gas heating systems?

A

Aluminum

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14
Q

Which chimney lining is smooth, seamless stack, and suitable for all fuels?

A

A cast-in-place

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15
Q

The height requirements for chimney terminations (per the 3-2-10 Rule) do not apply to these?

A

Fuel vents.

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16
Q

A greater vent height above the roof is needed as the roof pitch approaches being a what?

A

A vertical surface

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17
Q

A venting system is not permitted to extend into or pass through these HVAC components?

A

Air ducts or furnace plenums

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18
Q

How many heating system should a single flue be used for?

A

One

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19
Q

Gas vents that are greater than 12 inches in diameter or located less than 8 feet from a vertical structure should follow what rule?

A

2-2-10

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20
Q

Efflorescence on a chimney’s brickwork below the roof line may indicate that there is a leak where ?

A

At the roof flashing

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21
Q

If combustibles project out an 1-1/2 or more from the fireplace, how far above the opening should they be?

A

12-inches

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22
Q

A fireplace with a 6 square foot or less opening requires a minimum hearth of ?

A

16 inches in front and 8 inches on each side.

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23
Q

Zero-clearance fireplaces do require a clearance from combustibles at the _____ of the fireplace?

A

Top.

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24
Q

Type B vents should only be used with appliances that are equipped with a draft hood and burn either one of these two types of fuel ?

A

Natural gas or LP

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25
Q

Type B vents can not be used on appliance that produces flue gases that exceed what temperature?

A

480° F

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26
Q

Which type of vent must be equipped with its own special chimney caps?

A

Type B

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27
Q

Which vent pipe is commonly used for water heaters, furnaces, boilers, wall heaters and space heaters that burn natural gas or LP?

A

Type B

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28
Q

Type B is a double-wall vent made of what?

A

Galvanized metal and aluminum.

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29
Q

What is the clearance from combustibles for Type B pipe ?

A

1 inch

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30
Q

The vent type should be clearly printed on where?

A

The vent pipe itself.

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31
Q

Which type of vent pipe should never be used with wood-burners, incinerators, oil-fired or coal-fired appliances, or any appliances that burn anything other than liquid petroleum or natural gas.

A

Type B

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32
Q

Type L vent pipe has an inner wall made of what?

A

Stainless Steel

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33
Q

Type L vent gasses should not exceed what?

A

570 degrees.

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34
Q

What is Type L’s minimum distance from combustibles?

A

3-inches

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35
Q

Type L is used for which type of fuels?

A

Oil and natural gas.

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36
Q

Type L should not be used to vent which appliances?

A

Coal or wood-fired.

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37
Q

Type L has a min-max height of what?

A

6 and 30 feet.

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38
Q

What is the height rule for Type L vent?

A

2-2-10

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39
Q

All masonry chimneys should have one of these made of concrete, metal or stone to help protect it from rain and snow?

A

A cap

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40
Q

The chimney cap should have this to help shed rain?

A

Drip edge

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41
Q

There should be a caulked bond break around the what?

A

Flue liner

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42
Q

What’s the minimum over hang for a chimney crown/cap on all sides?

A

2 inch

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43
Q

How far above the chimney crown should a flue liner project?

A

4 inch minimum

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44
Q

What size screen openings should a spark arrestor have?

A

3/8 to 1/2 inch

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45
Q

Most masonry chimneys have an inadequate cap because they were constructed using what?

A

Common mortar mix

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46
Q

What’s the minimum concrete thickness for a fireplace hearth?

A

4 inches

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47
Q

What’s the bearing length of each end of a lintel?

A

4-inches

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48
Q

Most fireplaces are sized large enough to receive a piece of firewood cut how long?

A

2-foot-long

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49
Q

How deep should the firebox of a concrete/masonry fireplace be?

A

20 inches

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50
Q

Firebrick or other approved lining material inside the firebox should be how thick?

A

At least 2 inches

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51
Q

The back and side walls behind the lining should be made of what material?

A

Solid masonry

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52
Q

A firebox’s back/sidewalls with a firebrick liner should have a total thickness of what?

A

8-inches

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53
Q

The width of the mortar joints of the firebrick lining should not exceed what width?

A

1/4-inch

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54
Q

If there’s no firebrick lining inside the firebox, then the back and side walls should be solid brick and how thick?

A

10 inches

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55
Q

The angle of the back wall is called what?

A

Splay

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56
Q

Splay slope is usually how much per foot?

A

5-inches per

57
Q

Refractory mortar is specified but ______ used.

A

Seldom

58
Q

What controls the efficiency of a fireplace?

A

The throat

59
Q

The damper must be operable from the room containing what?

A

The fireplace

60
Q

Manually operated dampers can be installed only in connectors or chimneys serving fireplaces and stoves that burn what type of fuel?

A

Solid-fuel

61
Q

The top of the flue clean-out opening needs to be a minimum of how far from the lowest inlet?

A

6 inches

62
Q

What’s the minimum height of a flue clean-out opening?

A

6 inches

63
Q

Exterior air intake must not be located in what two areas?

A

The garage or basement of the house.

64
Q

Factory-Built Chimneys

T/F: A chimney cap must be installed on top of the flue pipe.

A

True

65
Q

Factory-Built Chimneys:
If a factory-built chimney is used with a solid-fuel burner or an appliance with corrosive gases, the inside flue pipe should be either one of these?

A

Stainless steel or a porcelain-coated surface.

66
Q

Factory-Built Fireplace:

The refractory panel walls require replacement if this can be inserted into the crack?

A

A nickel

67
Q

Factory-Built Fireplace:

The panels require replacement if the original surface has abraded by this much?

A

1/4-inch

68
Q

Factory-Built Fireplace:

Who should replace the refractory panels?

A

A qualified professional

69
Q

Wood-Burning Stoves:
In which type of stove does the smoky exhaust pass through a coated, ceramic honeycomb that ignites particulates and smoke gases.

A

A catalytic stove.

70
Q

Wood-Burning Stoves:

What should never be used because it burns significantly hotter than wood and would pose a fire hazard?

A

Coal

71
Q

What is the minimum distance above a fireplace opening for any combustible that projects out an 1 1/2 or less?

A

6-inches

72
Q

What is the minimum distance above a fireplace opening for any combustible that will project out more than an 1 1/2?

A

12-inches

73
Q

Combustible materials should be kept away from the fireplace opening a minimum of how far?

A

3 feet

74
Q

Hearths not made of concrete or masonry and have a thickness of less than 4 inches should be written up as?

A

A defect

75
Q

Hearths should have a minimum thickness of?

A

2 inches

76
Q

Single-Wall Metal Chimney:

Heat shields/wall protectors should have an air gap of at least?

A

1-inch

77
Q

Single-Wall Metal Chimney:

Should not be used in what type of dwellings?

A

One- and two-family

78
Q

Single-Wall Metal Chimney:

How far away from wood framed walls or combustible materials should they be kept?

A

18 inches

79
Q

Single-Wall Metal Chimney:

Under 18 inch diameter should be kept how far away from non-combustible walls?

A

At least 2 inches

80
Q

Single-Wall Metal Chimney:

18 inches and up in diameter should be kept how far away from non-combustible walls?

A

At least 4 inches

81
Q

Flues and connectors should not be this material?

A

Galvanized metal.

82
Q

Metal flues should be free of what?

A

Rust and corrosion

83
Q

Every masonry chimney should be what?

A

Lined

84
Q

A solid fuel-burning appliance vent should have a rise to the chimney of what ?

A

1/4-inch per foot

85
Q

Masonry Chimney:

Where should a smaller vent pipe be connected to the chimney in relation to a larger one?

A

Above it

86
Q

If two or more vent connector enter one chimney flue or vent, how must the pipe penetrations be made?

A

At different levels

87
Q

If two or more vent connector pipes do enter a chimney flue or vent at the same level, the connectors must be made at what angle?

A

45 degree or less.

88
Q

How far should combustible materials be kept from a fireplace’s cleanout door?

A

18 inches

89
Q

When inspecting a cleanout door they should be unobstructed and do this?

A

Close tightly

90
Q

The cleanout opening for a masonry chimney must be located how close to the base of the flue?

A

Within 6 inches

91
Q

An interior flue clean-out should be how far above the lowest accessible floor level?

A

16 inches.

92
Q

A smoke/CO monitor should be located where?

A

In the same room as the fireplace.

93
Q

How far above the fireplace opening should a throat or damper be located?

A

8 inches

94
Q

A damper should be checked for proper operations and what?

A

Rust or corrosion.

95
Q

Hearths that are not made of concrete, masonry and less than 4 inches are considered what?

A

Defects

96
Q

A chimney that passes through a combustible roofs requires what?

A

A thimble

97
Q

Should chimney crowns be flat or sloped?

A

Sloped

98
Q

The space around and between chimney liners should not be used as what?

A

A vent

99
Q

A chimney may contain more than one flue. If it does, the flues must be separated by a solid masonry partitions of what thickness?

A

4 inch

100
Q

It is a common mistake to apply chimney termination _________ requirements to fuel vents.

A

height

101
Q

The inspector should inspect the bases of chimney flues for distances that are not between ____ and 12 inches below the bottom edges of their cleanout openings.

A

6

102
Q

Factory-built or masonry fireplaces must be provided with an exterior air supply to assure proper fuel combustion, unless the room is _______

A

mechanically ventilated

103
Q

The cross-sectional area of a chimney flue is based on the _______ of the fireplace opening.

A

area

104
Q

Mortar between the bricks or stones that crumbles when poked with a screwdriver is considered a _____ condition.

A

defective

105
Q

The inspector should inspect for chimneys that terminate less than __________ feet above the highest point where they pass through the roof surface.

A

3

106
Q

__________ stoves have three characteristics that assist complete, clean combustion: pre-heated combustion air introduced from above the fuel; firebox insulation; and a large baffle.

A

Non-catalytic

107
Q

_________ built chimneys are NOT required to be of masonry construction.

A

Factory

108
Q

_____ from wood stoves can cause a variety of health ailments, from asthma to cancer.

A

Smoke

109
Q

You may find a properly installed _______ from a gas-fired furnace and a gas-fired water tank
connected into one flue.

A

Vent

110
Q

The top of a factory-built fireplace’s chimney has a _____ to divert rainwater from the chimney pipe to the chimney flashing.

A

storm collar

111
Q

The inspector should inspect the bases of chimney flues for distances that are not between ____ and 12 inches below the bottom edges of their cleanout openings.

A

6

112
Q

Factory-built or masonry fireplaces must be provided with an exterior air supply to assure proper fuel combustion, unless the room is what?

A

mechanically ventilated

113
Q

How often should a chimney or wood stove be inspected and cleaned by a certified chimney specialist?

A

every year

114
Q

A factory-built fireplace can have a clearance of what to combustibles?

A

zero

115
Q

Disposing of ashes from a wood stove using a central vacuum system is considered what?

A

unsafe

116
Q

If a ventless fireplace is oversized for the square footage of the area to be heated, it is still considered?

A

Safe

117
Q

The openings through which the chimneys of factory-built fireplaces pass should be blocked with support boxes and?

A

fire-stop spacers

118
Q

What can create pressure that is greater than the structural strength of concrete, which can be between 2,000 to 3,000 psi?

A

osmosis

119
Q

What is the recommend rise of the vent connector coming directly off the appliance?

A

A minimum of 1 foot

120
Q

B-vent chimney sections stacked vertically should be secured to the wall how often?

A

Every 6-feet.

121
Q

When vent connectors of several gas-fired appliances go into a common vent, the vent connector from each individual appliance should be arranged to have as much _______ as possible before starting the lateral run to the common vent?

A

Vertical rise

122
Q

To prevent accidental damage to the system, as well as burns, any portion of the vent which passes through an occupied area must be what?

A

enclosed

123
Q

Type B-Vent is intended for use with this type of draft applications?

A

Neutral or negative

124
Q

In a gas vent these are note permitted?

A

Dampers / restriction

125
Q

These must be provided where the vent passes through both the floor and the ceiling?

A

Firestops

126
Q

The appliances to be vented should be placed as close as possible to what point?

A

Where the vent is to run vertically up through the building.

127
Q

What class fires involves combustible metals, such as sodium, potassium, titanium and magnesium?

A

Class D

128
Q

Is it generally safe to burn pallets in a fireplace?

A

Yes

129
Q

Flues and connectors should not be this type of metal?

A

Galvanized.

130
Q

Masonry chimneys shall not be corbeled from a wall or foundation more than _______ of the chimney wall thickness.

A

One-half

131
Q

What is Type B vent’S clearance above the ground, veranda, porch, deck, or balcony?

A

12 inches minimum

132
Q

Type L flue gasses should not exceed what temperature?

A

570º F.

133
Q

What is Type B vent’s clearance to a window (operable or fixed closed) or door?

A

12 inches minimum

134
Q

Which connectors can not pass through attic, unheated spaces, partitions, or in concealed areas?

A

Single-wall

135
Q

What is Type B vent’s minimum clearance to a ventilated soffit locate?

A

18 inches

136
Q

What is Type B vent’s minimum clearance to a mechanical air supply inlet?

A

6 feet

137
Q

What is Type B vent’s minimum clearance to an unventilated soffit?

A

12 inches

138
Q

A solid-fuel-burning fireplace, stove, or heating system ______ connect to a chimney venting another fireplace, stove, or heating system.

A

Must not

139
Q

The chimney could lean where it projects above the roof due to deteriorated mortar joints caused by this type of swaying?

A

Wind-induced swaying

Home Inspection (13 decks)

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