Insulation And Acoustical

Question 1

FRK insulation is

Answer 1

Faced rigid board fiberglass board

Question 2

FOil faced and faced insulation as a flame spread rating of class

Answer 2

3

Question 3

How many inches from the ceiling should do the acoustical tile be installed

Answer 3

At least 4 inches

Question 4

Kelvin scale measures what

Answer 4

Absolute temp

Question 5

The general rule is that every Doubling of the weight of a wall increases sound transmission loss by

Answer 5

5-6 db

Question 6

The outer protective insulating coat should be sprayed the temperature of

Answer 6

45degrees

Question 7

The nominal thickness of r-19 fiberglass is

Answer 7

6-1/4

Question 8

The maximum permitted load per square foot on a heavy trade scaffold

Answer 8

75 pounds per square foot

Question 9

Acoustical tile should be installed when temperature is between

Answer 9

60 and 80°

Question 10

The minimum requirement for safety wires for a light fixture in a suspended ceiling

Answer 10

2 12 gauge wires

Question 11

When installing suspended ceilings what is the minimum amount of weight a number 12 gauge wire can hold

Answer 11

90 pounds

Question 12

A pad and carpet raises the IIC but has little effect on

Answer 12

STC

Question 13

3 1/2 and FS 25 insulation as an R-value of

Answer 13

11

Question 14

Sound transmission control can be increased by three ways

Answer 14

Adding mass
Increased airspace
absorptive material

Question 15

FSK 25 insulation is used for

Answer 15

Commercial fire resistant buildings

Question 16

When a laser level is used to install level ceilings it is set to _ to _ below the finished ceiling height

Answer 16

1 to 2 inches

Question 17

The formula for K factor is

Answer 17

BTU/hour/square feet/degree Fahrenheit

Question 18

When there’s an expose the AC duct on the roof what type of insulation is used

Answer 18

1 inch rigid board

Question 19

What’s the best material to use when sealing around a heat source

Answer 19

Silicone caulk

Question 20

What type of insulation is used under the slab foundation for a house

Answer 20

Foam board

Question 21

What is the maximum overhang of the scaffold plank

Answer 21

18 inches

Question 22

The gauge wire of exposed ceiling is

Answer 22

12

Question 23

A weatherproof jacket on pipe insulation should

Answer 23

Vent vapors and prevent moisture from entering

Question 24

What is the maximum angle for Lateral bracing wire for suspended ceilings

Answer 24

45°

Question 25

For insulating a slab on grade the insulation should be

Answer 25

R 10

Question 26

Polyurethane foam is not applied to machinery or storage facilities with an operating temperature of

Answer 26

300° f

Question 27

The nominal thickness of r 11 fiberglass insulation is

Answer 27

3 1/2 inches

Question 28

The minimum size of wall molding on an exposed grid ceiling is

Answer 28

3/4 inch

Question 29

The greatest concern if the protective coating of insulation is damaged is

Answer 29

Lose sound absorbing properties

Question 30

The R-value of the 1 inch thick polyurethane is

Answer 30

R six

Question 31

To stop air infiltration through a heating system

Answer 31

Call ducks at floor penetrations

Question 32

A duct is wrapped with Forio facing outside the wire is spaced at 18 inches on center this is correct because

Answer 32

It can be spaced up to 24 inches

Question 33

FS 25 is primarily used when

Answer 33

It will be exposed or low flame spread rating is required

Question 34

Z-bar ceiling systems use what gage wire

Answer 34

Nine gauge

Question 35

Why use multilayered rigid board on an exposed to air conditioning duct on the roof

Answer 35

Vapor proofing

Question 36

What is the minimum distance in the anchor for a suspended ceiling hanger wire must penetrate when installed in reinforced concrete

Answer 36

3/4 inch

Question 37

The required height for guard rails around the trench is

Answer 37

42 to 45 inches