fire proofing

When the ambient temperature is below 50 degrees F, the self-sealing lap of fiberglass pipe insulation should be _________________.

• reinforced with flared staples

• sealed with a vapor-barrier adhesive

• warmed with a heat gun

• sealed with duct tape

Elastomeric cellular thermal insulation is the technical name for _____.

• foam-in-place insulation

• rigid foam tubing

• flexible foam insulation

• fiberglass insulating material

Which of these insulating methods would normally be used for underground chilled-water pipe?

• Fiberglass pipe insulation b.

• Flexible foam tubing

• Expanded foam jacketing

• preinsulated pipe system

When boxing a floor joist, the double header can be reinforced by _____.

• using lag screws

• doubling the adjacent joists

• fitting a metal bridge

• installing strap hangers

Penetrations in fire-rated concrete floors are often sealed with _____.

• asbestos mortar

• firestopping collars

• cast-in-place fire-stops

• fire-stop putty

What is the largest hole that can be drilled in the center of a 2 × 12 floor joist (actual depth 11.25")? a. 33 ∕4" b. 4" c. 41 ∕4" d. 21 ∕4"

• 3-3 ∕4"

• 4"

• 4-1 ∕4"

• 2-1 ∕4"

Which of the following is the F rating of fire board?

• 3 hours

• 4 hours

• 5 hours

• 2 hours

Which type of material will expand and seal structural openings when exposed to flame?

• Integrated

• Inflammable

• Intumescent

• Nonexplosive

Joints between sections of flexible foam pipe insulation are sealed with a(n) _____.

• strip of duct tape

• brush-on adhesive

• self-adhesive butt strip

• ultrasonic welder

Gaps where self-sealing laps did not seal properly are referred to as _____.

• breaks

• mouse-holes

• fish-tails

• fish-mouths