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 | Jan 25, 2016
Dept. of Energy releases decision guides for plug and process loads
Plug and process loads consume about 30% of the primary energy in U.S. commercial buildings today.
Codes and Standards | Jan 22, 2016
ConsensusDocs releases new multi-party IPD agreement and joining agreement
The documents serve as a comprehensive revision of previous IPD agreement
Codes and Standards | Jan 22, 2016
State Savings Calculator analyzes savings associated with energy codes
The calculator breaks down the cost-effectiveness of energy codes on a state-by-state basis.
Codes and Standards | Jan 22, 2016
Metal Roofing Seaming Guide published by Metal Construction Association
The free document is specifically tailored for metal roof installation.
Codes and Standards | Jan 22, 2016
Treasury Dept. will start crackdown on illicit money in luxury real estate
The move is expected to impact high-end condo development.
Resiliency | Jan 13, 2016
LEED credits on resiliency expected to influence future of building design
Post-disaster survivability is a key goal.
Codes and Standards | Jan 12, 2016
Batteries are the next step in raising sustainability standards
Battery technology will reduce electricity costs and promote a more stable, flexible grid.
Codes and Standards | Jan 4, 2016
Denver broadens its use of design reviews as construction booms
Support strong, but some wary of giving more say to review boards.
Codes and Standards | Dec 23, 2015
International Code Council approves updates based on NIST study of Joplin, Mo. tornado
Applies to schools and other high occupancy buildings.
Codes and Standards | Dec 21, 2015
Changing building codes to protect against mass shootings at odds with other safety measures
Fire and other emergencies require getting people out quickly, not locking down sections.