Acoustic Block Edmonton AB

Acoustic block, more porous than standard CMU, are designed to absorb, block and/or diffuse sound waves in Edmonton.The type of acoustic block that should be used depends on the type of noise and your goal.

Dryco Building Supplies (Edmonton) Inc
(780) 434-9481
7350 68 Avenue Nw
Edmonton, AB
 
Timbertown Building Centre Ltd
(780) 435-4747
4840 99 Street Nw
Edmonton, AB
 
Glenora Lumber & Building Supplies Ltd
(780) 453-5691
14505 116 Avenue Nw
Edmonton, AB
 
Mission Building Supplies
(780) 451-6633
16045 114 Avenue Nw
Edmonton, AB
 
Fancy Doors & Mouldings -
(780) 432-7700
9129 35 Avenue Nw
Edmonton, AB
 
Superior Lumber Ltd
(780) 468-3222
7040 71 Street Nw
Edmonton, AB
 
Trail Building Supplies Ltd
(780) 463-1737
9450 45 Avenue Nw
Edmonton, AB
 
Perfect Panel Systems Ltd
(780) 702-0600
B-12165 154 Street Nw
Edmonton, AB
 
Kenroc Building Materials Co Ltd
(780) 452-8930
16850 109 Avenue Nw
Edmonton, AB
 
Igloo Building Supplies Group
(780) 451-0600
21421 111 Avenue Nw
Edmonton, AB
 

Acoustic Block

Provided By:

Source: Masonry Construction
Publication date: September 1, 1998

By Elizabeth Keating

Acoustic block, more porous than standard CMU, are designed to absorb, block and/or diffuse sound waves.The type of acoustic block that should be used depends on the type of noise and your goal. You may want to block a sound, ensure good acoustics in a room, or absorb, block and diffuse all at once. You may need to supplement an acoustic block with other acoustic materials.Highway sound-barriers, school concert halls, lecture rooms -- all require specific sound control. Sounds at low frequencies are some of the most annoying to endure and some of the most difficult to reduce.An STC rating measures a wall's resistance to sound transmission. ASTM E 90 "Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions" stipulates a way to measure sound transmission loss. The National Concrete Masonry Association (NCMA) has a simple formula for estimating STC.The NRC (Noise Reduction Coefficient) is the average of the sound absorption coefficients at four frequencies. A sound absorption coefficient (SAC) is the percentage of sound waves absorbed by the block. NRC is calculated from the SACs at only four frequencies: 250, 500, 1,000 and 2,000 hertz. A table or graph giving sound absorption coefficients at all measured frequencies is much more informative.

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