RCP/Elect/Acoustical (IDPX/PRAC)

Question 1

Acoustical Systems

NRC

Answer 1

Noise Reduction Cofficient

Question 2

Acoustical Systems

Materials with a NCR rating of 0.75 or higher considered what?

Answer 2

Highly absorptive

Question 3

Acoustical Systems

Typical ACT ceiling tiles have a NCR rating of what?

Answer 3

0.55-0.65

Question 4

Acoustical Systems

STC

Answer 4

Sound Transmission Class

Measures how well a product keeps sound form escaping a room

Question 5

Acoustical Systems

CAC

Answer 5

Class Attenuation Class

Question 6

Acoustical Systems

The highter the STC means what?

Answer 6

The better

Between 55 -65

Question 7

Acoustical Systems

IIC

Answer 7

Impact Insulatin Class

Building transmisson (tapping on floor)

Question 8

Acoustical Systems

What can you do to control sound trasmission through partitons?

Answer 8

• Add a second layer of gyp board
• Add insulation to wall cavity
• Add a channel, with furry strip to create a void between wallboard and stud
• Seall all penetrations
• Add strippting to doors and install solid core
• Take partitions to deck (underside of floor above)

Question 9

Electrical

GFCI

Answer 9

Ground fault circuit interrupter

Question 10

Electrical

AFCI

Answer 10

Arch fault circuit interrupter

Question 11

Electrical

If electrical boxes are installed on both sides of the same wall, how far apart must they be from each other?

Answer 11

24”

Question 12

Electrical

Are there requiremtns on outlet placement or distance in a commerical buidling?

Answer 12

NO

Question 13

Electrical

In residental all rooms require a convenience outlet if a wall is how long?

Answer 13

2 feet or more

Question 14

Electrical

How many outlets are required in a hallway that is longer than 10’?

Answer 14

1 outlet

Question 15

Electrical

What height are convinence outlets places at?

Answer 15

15” AFF

Question 16

Electrical

Outlets and controls that are handicap accessible need to placed at what height?

Answer 16

18” - 48”

Question 17

Electrical

Receptacles at counters and baths are placed how high?

Answer 17

42” - 48”

Question 18

Electrical

Only exception for outlet placement in a commerical building is what room?

Answer 18

Meeting rooms

Question 19

Electrical

What is a power pole?

Answer 19

A fairly inexpensive way to bring power from the ceiling to workstations

Best for open office applications

Question 20

Electrical

What are raceways?

Answer 20

Acceptable way to bring power from the wall to a table in the middle of the room

Suitable for training areas and conference rooms

Question 21

Electrical

How far from the bathroom sink is a GFCI required?

Answer 21

3’

Min of 1 per bathroom

Question 22

Electrical

Kitchens must have no fewer than how many outlets?

Answer 22

2

Question 23

Electrical

In a kitchen, how far apart are outlets placed from each other?

Answer 23

12”

Question 24

Electrical

What is the standard height of an outlet in a kitchen that does not have to be GFCI?

Answer 24

15” AFF

Refrigerators, Stoves/Ranges

Question 25

# Electrical How far does a GFCI outlet need to be from a sink?

Answer 25

6'

Question 26

# Electrical Example fo kitchen outlets

Answer 26

Question 27

# Electrical Does a outlet need to be GFCI if beyond 6'?

Answer 27

NO

Question 28

# Electrical On small projects electrial switching is also shown on what plan?

Answer 28

reflected ceiling plan

Question 29

# Electrical On larger projects electrical switching is shown on what plan?

Answer 29

The electrical engineers plan

Question 30

# Electrical In residental spaces, the NEC requires that every habitable room, stair and hallway have what?

Answer 30

A switch to control lighting

Question 31

# Electrical Does the interior desinger show how lights will be switched?

Answer 31

YES

Question 32

# Electrical If a outlet has a special power requirement what is required?

Answer 32

Dedicated circuit

Question 33

# Electrical How much feet do you need in front of a access panel?

Answer 33

3 feet

Question 34

# Electrical Stairs need a switch where?

Answer 34

Top and bottom of stairs | 3-way switch

Question 35

# RCP Access panels must be insalled to access what in the ceiling?

Answer 35

* Junction boxes * Dampers * Valves * AHU

Question 36

# RCP How big does a access panle door need to be?

Answer 36

24" square

Question 37

# Electrical Where are GFCI required?

Answer 37

* Every damp location * Garages * Outdoor * Kitchen cunters * Crawl spaces * Laundry/Utility rooms * Wet Bar