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
Green | Dec 9, 2022
Newly formed Net Zero Built Environment Council aims to decarbonize the built world
Global management consulting firm McKinsey recently launched the Net Zero Built Environment Council, a cross-sector coalition of industry stakeholders aiming to decarbonize the built world. The council’s chief goal is to collaboratively create new pathways to cut greenhouse gas emissions from buildings.
Energy Efficiency | Dec 6, 2022
Washington state’s Building Code Council mandates heat pumps in all new residential construction
The Washington State Building Code Council has voted to require heat pumps for all new residential construction starting in July 2023. The new mandate has drawn criticism over concerns that it will add costs to housing construction, especially given current supply chain challenges for heat pumps.
Geothermal Technology | Dec 6, 2022
Google spinoff uses pay-as-you-go business model to spur growth in geothermal systems
Dandelion Energy is turning to a pay-as-you-go plan similar to rooftop solar panel leasing to help property owners afford geothermal heat pump systems.
Contractors | Dec 6, 2022
Slow payments cost the construction industry $208 billion in 2022
The cost of floating payments for wages and invoices represents $208 billion in excess cost to the construction industry, a 53% increase from 2021, according to a survey by Rabbet, a provider of construction finance software.
Multifamily Housing | Dec 6, 2022
Miami-Dade County will allow accessory dwelling units
Commissioners in Miami-Dade County, Fla., recently voted to allow many single-family homeowners to rent out accessory dwelling units on their property. Many homeowners will be allowed to rent out garages, separate quarters, or detached backyard apartments if they meet certain standards including for lot size and parking.
Steel Buildings | Dec 6, 2022
2022 AISC Code of Standard Practice for Steel Buildings and Bridges released
The American Institute of Steel Construction recently released an updated revision of one of its flagship standards, the Code of Standard Practice for Steel Buildings and Bridges (ANSI/AISC 303-22). The code was last updated in 2016. The latest version is available as a free download at aisc.org/2022code.
Multifamily Housing | Dec 6, 2022
Support for multifamily rent control legislation grows as metros face big rent hikes
Steep rent increases during the pandemic recovery have spurred support for rent control legislation in several areas of the country.
Mass Timber | Dec 1, 2022
Cross laminated timber market forecast to more than triple by end of decade
Cross laminated timber (CLT) is gaining acceptance as an eco-friendly building material, a trend that will propel its growth through the end of the 2020s. The CLT market is projected to more than triple from $1.11 billion in 2021 to $3.72 billion by 2030, according to a report from Polaris Market Research.
Retail Centers | Nov 29, 2022
'Social' tenants play a vital role in the health of the retail center market
After a long Covid-induced period when the public avoided large gatherings, owners of malls and retail lifestyle centers are increasingly focused on attracting tenants that provide opportunities for socialization. Pent-up demand for experiences involving gatherings of people is fueling renovations and redesigns of large retail developments.
Multifamily Housing | Nov 29, 2022
Number of office-to-apartment conversion projects has jumped since start of pandemic
As remote work rose and demand for office space declined since the start of the Covid-19 pandemic, developers have found converting some offices to residential use to be an attractive option. Apartment conversions rose 25% in the two years since the start of the pandemic, with 28,000 new units converted from other property types, according to a report from RentCafe.