Acoustics & Structures

5. while resising changing physical forces a structure must maintain_________.
7. the pushing together of a material resulting in a reduction in size or volume.
9. what are forces acting on a building called?
10. the _______ the STC the better the barrier is at stopping sound
11. resists horizontal loads from wind or an earthquake
13. base notes=______ frequency
16. supports the floorand anchors the rest of the building.
17. what is frequency measured in?
18. the reaction the reaction of a material to stress or pulling on a material.
19. the material in which all loads dissipate in to.
20. this type of load changes gradually over time.

1. how does sound travel?
2. what does CAC stad for?
3. this type of load is applied suddenly to a structure.
4. what does acoustic attenuation mean?
6. an STC ratting of 25 means that ________speach can be heard through the barrier
8. structural system of a building is designed and constructed to________.
12. the buildings vertical extension above ground.
14. static loads acting downward of a structure.
15. _______ increaces as load increaces & the span becomes longer