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Sound Abatement
Plexiglas® acrylic plastic sheet offers equal or better sound loss characteristics than glass. It also has much better breakage resistance, so it can be used as a transparent sound barrier to reduce noise levels and increase safety at the same time.
Table 5: Noise Reduction Values for Plexiglas® Sheet
(Ten panels were 75" x 100") |
|
Frequency Spectrum of Noise Source |
Approximate Noise Reduction - dB (A) Sheet Thickness (in) |
.118*
(3mm) |
.236
(6mm) |
.472
(12mm) |
.944
(24mm) |
Double Glazed** |
|
Low Frequencies Predominant |
15 |
21 |
26 |
30 |
34 |
|
Flat Frequency Spectrum |
25 |
29 |
33 |
35 |
38 |
|
High Frequencies Predominant |
28 |
31 |
34 |
36 |
40 | *Estimated from measurements at .236", .472" and .944" sheet.
**.236" Plexiglas® sheet, an air space, .177" Plexiglas® sheet.
|
Table 6: STC Noise Ratings |
|
Construction |
STC |
|
0.118" Plexiglas® Sheet*
0.236" Plexiglas® Sheet
0.472" Plexiglas® Sheet
0.944" Plexiglas® Sheet
0.236" Plexiglas® Sheet, air space, 0.177" Plexiglas® Sheet |
25
29
33
35
38 | *Estimated from measurements of .236", .472" and .944" sheet.
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