Acoustic Block Halifax NS

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

Greater Halifax Partnership
(902) 490-6000
2101-1969 Upper Water Street
Halifax, NS
 
Pierceys
(902) 454-6411
2854 Robie Street
Halifax, NS
 
Craftmade Kitchens
(902) 404-3995
110 Chain Lake Drive
Halifax, NS
 
Infinity Windows
(902) 403-6768
C-124 Chain Lake Drive
Halifax, NS
 
Demers Lumber Inc
(902) 468-0003
76 Williams Av
Halifax, NS
 
Rona
(902) 876-3223
350 Horseshoe Lake Drive
Halifax, NS
 
LumberMart Clearance Centers Ltd
(902) 477-6500
751 Herring Cove Road
Halifax, NS
 
Alweather Windows & Doors Limited
(902) 468-2605
27 Troop Av
Halifax, NS
 
Kent
(902) 450-2000
225 Chain Lake Drive
Halifax, NS
 
Craftmade Kitchens
(902) 404-3995
110 Chain Lake Drive
Halifax, NS
 

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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