||Proposed Test Method Measures Effectiveness of Floor Coverings
Designed to Reduce Noise
On Dec. 10, 2001, ASTM Committee E33 on Environmental Acoustics approved E 2179, Standard Test Method for Laboratory Measurement of the Effectiveness
of Floor Coverings in Reducing Impact Sound Transmission Through
Concrete Floors. Subcommittee E33.03 on Sound Transmission developed
and will maintain the method, which is now available.
ASTM E33 has developed a new test method for evaluating the effectiveness
of floor toppings (or coverings, like tile, carpet, etc.) that
reduce impact sound, said subcommittee chairman Alf Warnock,
senior research officer, National Research Council, Canada. The
method is an adaptation with minor changes of an ISO [International
Organization for Standardization] test method. The ratings obtained
for the floor toppings do not depend on the details of the floor
assembly; they apply only to the topping. Thus, the ratings permit
fair comparisons among different floor toppings ranging from vinyl,
through carpet to engineered wood or plastic coverings resting
on foam or rubber substrates.
Sound levels generated by a standard tapping machine are measured
beneath a concrete slab, with and without the floor topping in
position, continued Warnock. The difference in level due to
the floor topping does not depend on the properties of the concrete
slab. The ratings apply only to floor toppings on concrete slabs.
A similar approach for light joist floors is being studied.
To comment or obtain further technical information, contact Alf Warnock, Indoor Environment, Institute for Research in Construction,
NRC, Ottawa, Canada, (phone: 613/993-9370). Committee E33 meets
April 15-16 in Pittsburgh, Pa. For meeting or membership details,
contact Steve Mawn, manager, ASTM Technical Committee Operations (phone: 610/832-9726).
Copyright 2002, ASTM