2018 IFGC CH 5B

·         01.Gas vents shall be supported in accordance with ________________.

• 1.  a.the manufacturer’s instructions
• 2.  b.the referenced standard
• 3.  c.the accepted engineering practice
• 4.  d.the label on the vent

·         02.A single-wall metal pipe vent shall terminate at least ______________inches higher than any portion of a building within 10 feet horizontally.

• 1.  a.24
• 2.  b.30
• 3.  c.36
• 4.  d.42

·         03.Where double-wall vents are installed, fasteners shall ______________.

• 1.  a.be spaced evenly around the vent
• 2.  b.not penetrate the inner wall.
• 3.  c.not be used at the transition from a flue collar
• 4.  d.be aluminum or stainless steel

·         04.Single-wall metal pipe vent shall be constructed of galvanized sheet steel not less than ______________ in thickness.

• 1.  a.0.0360 inch
• 2.  b.0.0304 inch
• 3.  c.0.0240 inch
• 4.  d.0.0190 inch

·         05.For single-wall metal pipe to be used outdoors for venting appliances, the 99-percent winter design temperature must not be less than __________________ degrees Fahrenheit.

• 1.  a.0
• 2.  b.32
• 3.  c.40
• 4.  d.50

·         06.A single-wall metal pipe vent shall terminate at least _______________ feet in vertical height above the highest appliance draft hood outlet.

• 1.  a.5
• 2.  b.10
• 3.  c.15
• 4.  d.20

·         07.When terminating above a roof, a single-wall metal pipe vent shall extend at least __________________ above the highest point where it passes through the roof.

• 1.  a.1 foot
• 2.  b.2 feet
• 3.  c.3 feet
• 4.  d.4 feet

·         08.Where a single-wall metal pipe vent passes through a roof constructed of combustible material, a noncombustible, nonventilating thimble shall extend at least ____________inches above and 6 inches below the roof.

• 1.  a.12
• 2.  b.6
• 3.  c.24
• 4.  d.18

·         09.Single-wall metal pipe vent is permitted to pass through a(n) __________________ constructed of combustible materials.

• 1.  a.inside wall
• 2.  b.attic
• 3.  c.floor
• 4.  d.exterior wall

·         10.A mechanical draft venting system terminates through an exterior wall directly above an operable window. The vent termination must be located a minimum of ________________above the window.

• 1.  a.3 feet
• 2.  b.4 feet
• 3.  c.1 foot
• 4.  d.2 feet