RCP/Elect/Acoustical (IDPX/PRAC) Flashcards
Acoustical Systems
NRC
Noise Reduction Cofficient
Acoustical Systems
Materials with a NCR rating of 0.75 or higher considered what?
Highly absorptive
Acoustical Systems
Typical ACT ceiling tiles have a NCR rating of what?
0.55-0.65
Acoustical Systems
STC
Sound Transmission Class
Measures how well a product keeps sound form escaping a room
Acoustical Systems
CAC
Class Attenuation Class
Acoustical Systems
The highter the STC means what?
The better
Between 55 -65
Acoustical Systems
IIC
Impact Insulatin Class
Building transmisson (tapping on floor)
Acoustical Systems
What can you do to control sound trasmission through partitons?
- 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)
Electrical
GFCI
Ground fault circuit interrupter
Electrical
AFCI
Arch fault circuit interrupter
Electrical
If electrical boxes are installed on both sides of the same wall, how far apart must they be from each other?
24”
Electrical
Are there requiremtns on outlet placement or distance in a commerical buidling?
NO
Electrical
In residental all rooms require a convenience outlet if a wall is how long?
2 feet or more
Electrical
How many outlets are required in a hallway that is longer than 10’?
1 outlet
Electrical
What height are convinence outlets places at?
15” AFF
Electrical
Outlets and controls that are handicap accessible need to placed at what height?
18” - 48”
Electrical
Receptacles at counters and baths are placed how high?
42” - 48”
Electrical
Only exception for outlet placement in a commerical building is what room?
Meeting rooms
Electrical
What is a power pole?
A fairly inexpensive way to bring power from the ceiling to workstations
Best for open office applications
Electrical
What are raceways?
Acceptable way to bring power from the wall to a table in the middle of the room
Suitable for training areas and conference rooms
Electrical
How far from the bathroom sink is a GFCI required?
3’
Min of 1 per bathroom
Electrical
Kitchens must have no fewer than how many outlets?
2
Electrical
In a kitchen, how far apart are outlets placed from each other?
12”
Electrical
What is the standard height of an outlet in a kitchen that does not have to be GFCI?
15” AFF
Refrigerators, Stoves/Ranges
Electrical
How far does a GFCI outlet need to be from a sink?
6’
Electrical
Example fo kitchen outlets
Electrical
Does a outlet need to be GFCI if beyond 6’?
NO
Electrical
On small projects electrial switching is also shown on what plan?
reflected ceiling plan
Electrical
On larger projects electrical switching is shown on what plan?
The electrical engineers plan
Electrical
In residental spaces, the NEC requires that every habitable room, stair and hallway have what?
A switch to control lighting
Electrical
Does the interior desinger show how lights will be switched?
YES
Electrical
If a outlet has a special power requirement what is required?
Dedicated circuit
Electrical
How much feet do you need in front of a access panel?
3 feet
Electrical
Stairs need a switch where?
Top and bottom of stairs
3-way switch
RCP
Access panels must be insalled to access what in the ceiling?
- Junction boxes
- Dampers
- Valves
- AHU
RCP
How big does a access panle door need to be?
24” square
Electrical
Where are GFCI required?
- Every damp location
- Garages
- Outdoor
- Kitchen cunters
- Crawl spaces
- Laundry/Utility rooms
- Wet Bar
