Sources: CP staff; ASTM International, West Conshohocken, Pa. A new standard from ASTM Committee E33 on Building and Environmental Acoustics establishes an evaluation metric for low-frequency impact noise, especially the thudding from footfalls typical in multi-level buildings constructed of materials other than cast-in-place or precast concrete.
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Obama underscores resilience, energy efficiency in Building Safety Month proclamation
Source: The White House
Proclaiming May National Building Safety Month, President Barack Obama notes:
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