Integration with Building Systems and Construction 25% (RCP/Elect/Acoustical)) 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