Insulation And Acoustical Flashcards
FRK insulation is
Faced rigid board fiberglass board
FOil faced and faced insulation as a flame spread rating of class
3
How many inches from the ceiling should do the acoustical tile be installed
At least 4 inches
Kelvin scale measures what
Absolute temp
The general rule is that every Doubling of the weight of a wall increases sound transmission loss by
5-6 db
The outer protective insulating coat should be sprayed the temperature of
45degrees
The nominal thickness of r-19 fiberglass is
6-1/4
The maximum permitted load per square foot on a heavy trade scaffold
75 pounds per square foot
Acoustical tile should be installed when temperature is between
60 and 80°
The minimum requirement for safety wires for a light fixture in a suspended ceiling
2 12 gauge wires
When installing suspended ceilings what is the minimum amount of weight a number 12 gauge wire can hold
90 pounds
A pad and carpet raises the IIC but has little effect on
STC
3 1/2 and FS 25 insulation as an R-value of
11
Sound transmission control can be increased by three ways
Adding mass
Increased airspace
absorptive material
FSK 25 insulation is used for
Commercial fire resistant buildings
When a laser level is used to install level ceilings it is set to _ to _ below the finished ceiling height
1 to 2 inches
The formula for K factor is
BTU/hour/square feet/degree Fahrenheit
When there’s an expose the AC duct on the roof what type of insulation is used
1 inch rigid board
What’s the best material to use when sealing around a heat source
Silicone caulk
What type of insulation is used under the slab foundation for a house
Foam board
What is the maximum overhang of the scaffold plank
18 inches
The gauge wire of exposed ceiling is
12
A weatherproof jacket on pipe insulation should
Vent vapors and prevent moisture from entering
What is the maximum angle for Lateral bracing wire for suspended ceilings
45°
For insulating a slab on grade the insulation should be
R 10
Polyurethane foam is not applied to machinery or storage facilities with an operating temperature of
300° f
The nominal thickness of r 11 fiberglass insulation is
3 1/2 inches
The minimum size of wall molding on an exposed grid ceiling is
3/4 inch
The greatest concern if the protective coating of insulation is damaged is
Lose sound absorbing properties
The R-value of the 1 inch thick polyurethane is
R six
To stop air infiltration through a heating system
Call ducks at floor penetrations
A duct is wrapped with Forio facing outside the wire is spaced at 18 inches on center this is correct because
It can be spaced up to 24 inches
FS 25 is primarily used when
It will be exposed or low flame spread rating is required
Z-bar ceiling systems use what gage wire
Nine gauge
Why use multilayered rigid board on an exposed to air conditioning duct on the roof
Vapor proofing
What is the minimum distance in the anchor for a suspended ceiling hanger wire must penetrate when installed in reinforced concrete
3/4 inch
The required height for guard rails around the trench is
42 to 45 inches
