What is the minimum thickness of a wythe - 4 inches nominal
chimney liners are listed to what standard - UL 1777
NFPA 211 recommends annual cleaning of chimneys fireplaces and vents - False
The horizontal length of a single wall connector to a natural drat chimney or vent serving a single
appli...
When a round flue is used for the lining of a fireplace chimney the proper fireplace opening to
flue size ratio should be - 12:1
When unlined the smoke chamber walls shall be what thickness - 8"
When the opening of the firebox is 6 square feet the extension of the hearth should be -
20 inches
T or F the inner surfaces of the smoke chamber shall not be inclined more than 45 degrees from
vertical - True
A level 2 inspection inspection of accessible areas of attics basements and crawlspaces -
True
The purpose of a heat reclaimer is to - Extract heat from the flue gases
What best describes the allowable free air space around a flue tile - 1/4 inch to 4
inch
Crickets are recommended whenever the chimney is - 30" wide
The maximum allowable slope of an offset in a verticle flue is - 30 degrees
The area of the spark arrestor must not be less than three times the net free area of the chimney
flue - True
, What is the minimum thickness of a wythe - 4 inches nominal
chimney liners are listed to what standard - UL 1777
NFPA 211 recommends annual cleaning of chimneys fireplaces and vents - False
The horizontal length of a single wall connector to a natural drat chimney or vent serving a single
appliance shall be not more than ______ of the height of the vertical height of the chimney
- 75 %
The effective area of a connector for a single appliance shall be ______ the area of the appliance
flue collar - atleast 50%
Cleanout openings shall be prvided in all chimney flues serving free standing appliances -
True
What species causes anaphylactic shock? - Bees
A type 3 ladder is rated for - 200 lbs
what are the stages of wood burning - drying pyrolysis charcoaling
The volume of gases which actually pass through the system as a result of draft is -
Flow
Rectangular flues with aspect ratios greater than 2 to 1 shall be sized at least ______ of the
fireplace opening - 1:8
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