Deck 32: One-Flue Chimneys

Question 1

Cleanout doors should be installed _____ .

A) over the third course on a brick structure above grade
B) over the first course on a brick structure above grade
C) over the second course on a block structure
D) over the third course on a block structure

Answer 1

A

Question 2

Which of the following statements is correct regarding building code requirements for residential chimneys?

A) Chimney wall thickness should be a nominal 4" when no flue liner is used.
B) Masonry chimneys should not be corbeled out more than 6 inches from a wall.
C) Chimney clearance from combustible materials is a minimum of 4 inches.
D) The minimum chimney height for fire safety is the 2 feet above the roofline.

Answer 2

B

Question 3

Chimneys should be built on solid concrete footings that have been poured above the frost line.

Answer 3

False

Question 4

Which of the following statements is true regarding chimney construction?

A) Because of the height and width of a chimney, mistakes are not noticeable.
B) Slightly cracked flue linings can be used in the chimney.
C) The flue lining should not be cut with a masonry saw.
D) All joints must be uniform in size.

Question 5

Which of the following statements is true about masonry used for chimneys?

A) Old or used soft brick are acceptable for the outside face of the chimney.
B) Soft brick should be used near the hot part of the flue.
C) Concrete masonry units should not be used for chimneys.
D) Any hard, fired masonry unit can be used to build a chimney.

Question 6

Terra-cotta is not an acceptable material for flue linings.

Question 7

When the chimney is completed, you should check to make sure that the chimney creates a good draft.

Question 8

An appliance chimney can serve more than one heat source.

Question 9

A _____ is defined as a round terra-cotta or fired clay insert that fits into the flue lining from the heating source acting as a sleeve in the chimney to receive the furnace or stove pipe.

A) flue ring
B) thimble
C) receptacle
D) sock

Question 10

_____ masonry cement is generally accepted for house chimneys.

A) Type S
B) Type O
C) Type N
D) Type M

Question 11

When installing a wood stove to a one-flue chimney, the cleanout doors should be located _____ below the inlet.

A) approximately 2'
B) no less than 3'
C) no more than 1'
D) at least 3'

Question 12

The flue lining should project _____ above the last course of masonry Chapters laid on the chimney.

A) less than 4 "
B) exactly 5"
C) approximately 6"
D) no less than 8"

Question 13

______ is a piece of flat metal that will not rust or deteriorate that covers the point at which the chimney and roof meet.

A) Flashing
B) Corbeling
C) Capping
D) Coping

Question 14

Which of the followings statements regarding chimney sealant is correct?

A) Silicone caulk should not be used as a chimney sealant.
B) Oil-based sealants should be used for chimneys.
C) Caulking is often used to hide poor workmanship.
D) Priming is not necessary prior to using a sealant on a chimney.

Question 15

All wood or other flammable materials should be kept at least 2" from chimneys to prevent any chance of fire.