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
School Construction | Jul 11, 2016
Fight over school funding in Arizona headed to court
Legislature accused of ignoring 1994 ruling ordering state to pick up some of the costs.
Green Specifications | Jul 8, 2016
World Green Building Council sets goal of 100% net-zero buildings by 2050
All new buildings and major renovations to be net-zero by 2030.
Market Data | Jul 7, 2016
Airbnb alleged to worsen housing crunch in New York City
Allegedly removing thousands of housing units from market, driving up rents.
Urban Planning | Jul 7, 2016
Y Combinator project would build new city using new technology, urban policies
Zoning, property rights, building codes all could be re-imagined.
Green | Jul 6, 2016
U.S. healthcare system’s GHG emissions rise 30% in past decade
If U.S. healthcare were a country, it would rank 13th in GHG emissions.
Codes and Standards | Jul 5, 2016
State legislature fails to pass law to extend design-build for New York City projects
Would have allowed five city agencies to use alternate delivery method.
Energy | Jun 30, 2016
Energy Department partnership with CoStar Group will study sustainability impact on property valuation
Database will offer rich data set on energy-efficient buildings in the U.S.
Contractors | Jun 30, 2016
Chicago contractor found guilty of fraud on city’s requirement on minority-owned businesses
Alleged to have been sham business in bid to win city public works contract.
Codes and Standards | Jun 29, 2016
OSHA starts evaluation of construction industry noise standards
New studies indicate significant number of construction workers suffer hearing loss.
Seismic Design | Jun 28, 2016
ASTM International updates seismic risk standards
Expected to improve consistency of risk evaluation on commercial real estate transactions.
