The American Architectural Manufacturers Association (AAMA) updated two documents for evaluating window wall, curtain wall, and storefront systems regarding seismic drift. AAMA 501.4-18, “Recommended ...
Officials earthquake-prone areas have new testing methods for equipment. Officials in California and other earthquake-prone areas have new testing methods for vibration isolators and HVAC equipment, ...
Along with the development of new instrumentation, the test procedure itself was also standardized. By “walking” the potential probe toward the current probe and graphing the measurements, the ...
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