WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
Recall the major air leakage areas. - ANSWERS--Roofs to
Walls
-Walls to Fenestrations
-Walls to Foundations
-Areas Over and Under Unconditioned Spaces
-Building Expansion Joints
-MEP Penetrations
What are some benefits of an air barrier system? -
ANSWERS--It restricts the amount of moisture into your
building.
-It lowers the heat transfer via air movement in and out of a
building.
-It creates some sound abatement.
-It prevents pollutants from entering a building.
,-It allows an HVAC system to run more efficiently.
-It mitigates insect pathways.
Where can air barrier requirements be found within the
code? - ANSWERS-IBC = RE:IECC
IECC = Chapter 4, Section C402
IRC = Chapter 11, Section N1104 (R403)
ASHRAE 90.1 = Clause 5.4.3
List the key requirements for air barriers in the code. -
ANSWERS--It must be continuous.
-The material or the assembly must meet permeability
limits.
List 3 options for meeting the air barrier requirements in
most codes. - ANSWERS--The materials must meet 0.004
cfm/ft2 @ 1.56 ft./lbs. or 75pa
-An assembly must meet 0.04cfm/ft2 @ 1.56 ft./lbs. or 75pa
-A system must meet 0.4 cfm/ft2 @ 1.56 ft./lbs. or 75pa
Why are standard test conditions required in test methods?
- ANSWERS-It allows the materials to be compared to one
, another, and not the performance of the
installation/application.
Explain the difference between a material test, an assembly
test, and a system test. - ANSWERS--A material test verifies
that a specific material, when installed at the recommended
thickness, meets permeability requirements.
-An assembly test verifies that the assembly doesn't fail at
the joints between the membrane and the accessory.
-A system test verifies continuity between all pieces of the
air barrier system.
What are the benefits of an air barrier system test? -
ANSWERS-It can verify code performance requirements and
it can identify air leakage locations.
Why are test methods from other industries not used for
testing air barriers? - ANSWERS-Test methods from other
industries required modifications for air barrier materials,
so test methods specifically for air barriers eliminates the
need to modify those test methods.
List an example of an international standard. - ANSWERS-
ISO