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CMP 124 Exam 3 Questions with correct answers
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CMP 124 Exam 3 Questions with correct answers
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CMP 124 Exam 3 Questions with correct answersWhat is purpose of Insulation Correct Answer-Stop heat transfer, stop
sound transmission
What are 3 methods of heat transfer Correct Answer-Conduction,
convection, radiation
how does heat move through conduction Correct Answer-movement of
heat through a solid or liquid
Convection is the movement of? Correct Answer-Heated gas or liquid to
an area. Can move cooler (denser) air out.
Radiation heat come from Correct Answer-Sun. Heats objects when hit.
Types of insulation Correct Answer-Loosefill,
Rigid
Flexible
Reflective
Foam in Place.
What type of Fiberglass insulation is in 2x4 walls Correct Answer-R11,
R13, R15
,Advantages of Cellulose insulation Correct Answer-High thermal value,
low air infiltration,
fire resistant,
noise reduction.
material: Torn up newspaper.
Cellulose R Value? (1") Correct Answer-3.7
STC stand for? and its numbering Correct Answer-Sound Transmission
Class.
Higher the number the Better
Flexible insulation types Correct Answer-Batt
Blanket
Wrapped
Faced
friction fit
FiberBoard is a type of? Correct Answer-Rigid insulation. Low cost
(Celotex, built-rite)
R value of 5 Correct Answer-Extruded Rigid foam board
R value of 3.5? Correct Answer-Expanded Rigid foam board
, R-value of 7.2? Correct Answer-Polyiso Rigid Foam Board
Foam in place installation method Correct Answer-Inject into wall
cavity -- spray on wall surface
Polyurethane? Correct Answer-Foam in place insulation. High R-Value.
Moisture Resistant.
What does the sound transmission class do: Correct Answer-Deals with
the design and use of construction materials to control the noise
transmission through walls, floors, ceilings, doors, window openings
What is soffit baffles purpose Correct Answer-attic ventilation - ice
damming
What does NRC stand for Correct Answer-Noise Reduction Coefficient
Sound intensity is measured in... Correct Answer-Decibels
Controlling sound within a given room/area Correct Answer-NRC (noise
reduction commission)
Controlling sound transmission to other rooms Correct Answer-STC
(sound transmission class)
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