The way viruses spread from human to human is being reevaluated by scientists and that may have an impact on future ventilation standards.
At the outset of the Covid-19 outbreak, the prevailing belief was that the virus was spread via droplets that quickly dropped out of the air. As researchers studied the virus, however, they realized that it was likely spread via aerosols—smaller, lighter particles that travel further than six feet and can linger in the air in poorly ventilated spaces.
Colds and flu have been thought to be primarily spread via droplets, as well, as they hold more viruses than aerosols. But studies have found that a smaller amount of influenza virus is needed to infect people when inhaled as aerosols rather than sprayed up the nose as saliva droplets.
If this view is correct, improved ventilation could greatly reduce transmission of colds and flu viruses as well as Covid. For this reason, some believe new minimum ventilation standards in buildings should be enacted especially when one considers some 12,000 to 61,000 people annually succumb to the flu.
Related Stories
Codes and Standards | Oct 2, 2017
Nationwide retrofit strategy in Canada could cut 51% of emissions from large buildings
The roadmap provides government and industry with a targeted plan.
Codes and Standards | Sep 28, 2017
Resources available for new OSHA respirable crystalline silica regulation
NRCA offers compliance tools for contractors.
Codes and Standards | Sep 28, 2017
New tool compares HVAC system efficiency
IAPMO and Hydronics Industry Alliance unveil BEST to evaluate systems in early design phase.
Codes and Standards | Sep 26, 2017
Anti-drone technology can ward off unauthorized drone flights
The technology can be used to prevent terrorist attacks and spying.
Codes and Standards | Sep 25, 2017
How-to guide to renovating shopping centers available
E.U. research project focuses on energy efficiency and occupant comfort.
Codes and Standards | Sep 21, 2017
After construction crane collapses during Irma, regulations questioned
Cranes rated for 140 mph winds didn’t hold up to 100 mph gusts.
Codes and Standards | Sep 20, 2017
Energy efficiency measures pay off in some not-so-obvious ways
Access to better financing, tax incentives, rent premiums, among the benefits to greener buildings.
Codes and Standards | Sep 19, 2017
Benchmarking regulations prompt jump in green certified properties
2016 saw a slight rise in total certified U.S. green office space.
Codes and Standards | Sep 18, 2017
Changes likely to come to federal wetlands regulations
However, states may step up regulations as feds relax them.
Codes and Standards | Sep 14, 2017
Gentrification means a new mindset for city planners
Rising rents elicit reexamination of zoning principles.
