M2 試験問題を無料オンラインアクセス

An 8-inch Type B venting system with a listed vent cap must terminate a minimum of _____ feet above the flat roof through which it passes.

• A.4
• B.5
• C.1
• D.2

Supports for hazardous exhaust duct shall be constructed of:

• A.fibrous material.
• B.material complying with UL 181.
• C.noncombustible material.
• D.plastic.

The minimum size for access openings for fire dampers shall be:

• A.adequate to permit maintenance and resetting of the damper.
• B.12 inches by 12 inches.
• C.one-half the diagonal of the access opening.
• D.the same as the dimension of the duct.

Given: single-wall vent, which serves only one appliance, and has a height of 10 feet.
The maximum horizontal length permitted for a 5-inch diameter vent connector serving this vent is _____ feet.

• A.10
• B.5
• C.7.5
• D.9

Indoor combustion air shall be provided within:

• A.2 feet of the ceiling and 2 feet of the floor.
• B.1 foot of the ceiling and 2 feet of the floor.
• C.1 foot of the ceiling and 1 foot of the floor.
• D.2 feet of the ceiling and 1 foot of the floor.