Tag Archives: Relative humidity

Role of air barriers in mitigating disease transmission

The importance of infection control and the impact of operating conditions on the built environment have taken renewed focus in the wake of the COVID-19 pandemic. As a part of the ongoing response, industry organizations, such as the American Society of Heating and Refrigerating and Air-conditioning Engineers (ASHRAE), have released updated considerations for design and construction professionals, including airflow strategies and temperature and humidity controls, as well as ventilation and pressurization.

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ASTM update reduces wait time for RH test results in concrete

Earlier this month, ASTM International published its revised ASTM F2170, Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes. The updated standard reduces the mandatory wait period before obtaining official, documentable results from an in-situ relative humidity (RH) moisture test performed in concrete floor slabs from 72 to 24 hours.

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