New research led by an MIT graduate student at the school’s Concrete Sustainability Hub suggests that the value of buildings constructed to resist wind damage in hurricanes may be significantly underestimated.
The research found that the failure of wind loss models to account for neighborhood texture—the density and configuration of surrounding buildings—may result in a more than 80% undervaluation of structures built with stronger construction methods in Florida. Hazus, a loss estimation tool used by the Federal Emergency Management Agency (FEMA), estimates physical and economic damage to buildings due to wind and the impact of windborne debris.
The tool assumes that all buildings in a neighborhood experience the same wind loading, but buildings come in many different shapes and sizes can be arranged in numerous ways. Their configuration and positioning can amplify or reduce the wind load on buildings within the neighborhood.
In a model developed by MIT researchers, the texture-related loss implications were found to be higher in census tracts along the coast. These areas tend to be more dense and ordered, leading to higher wind load amplifications. Loss implications are particularly high for single-family homes, which are more susceptible to damage and have a higher replacement cost per housing unit.
Related Stories
| Sep 5, 2013
New CM-at-risk and design-build options create controversy in Ohio
Some contractors say Ohio's new system puts small and midsize construction companies at a disadvantage.
| Sep 5, 2013
Outdated codes slowed disaster recovery in Tuscaloosa, Ala.
Outdated building codes and lack of a master plan slowed the initial rebuilding stage after a devastating tornado leveled parts of Tuscaloosa, Ala. in 2011, according to the city’s mayor.
| Aug 28, 2013
Building collapse prompts legislation to beef up demolition regulations in Philadelphia
Philadelphia City Council will introduce legislation next month to strengthen the regulation of building demolition practices.
| Aug 28, 2013
Rules requiring contractors to boost hiring of veterans criticized
Some businesses are pushing back against proposed rules requiring federal contractors to step up their hiring of returning military service personnel.
| Aug 28, 2013
OSHA moves to reduced exposure to crystalline silica
Under a proposal from the Occupational Safety and Health Administration, the new permissible exposure limit to crystalline silica per cubic meter of air could be changed from 250 micrograms to 50 micrograms.
| Aug 28, 2013
IPMSC chooses members of committee for global property measurement standard
The International Property Measurement Standards Coalition (IPMSC) has selected 19 real estate experts from around the world to join its Standards Setting Committee to develop a global standard for measuring property.
| Aug 20, 2013
Code amendment in Dallas would limit building exterior reflectivity
The Dallas City Council is expected to vote soon on a proposed code amendment that would limit a building’s exterior reflectivity of “visible light” to 15%.
| Aug 20, 2013
Developers of Hollywood skyscraper will dig to see if earthquake fault is on site
New York-based Millennium Partners have agreed to dig a trench on a Hollywood, Calif., property to help determine whether an earthquake fault runs under it.
| Aug 20, 2013
Chinese-made resilient flooring products achieve FloorScore Indoor Air Quality certification
Five of China's leading manufacturers of resilient flooring recently received FloorScore Indoor Air Quality certification from SCS Global Services for their luxury vinyl tile (LVT) products.
| Aug 20, 2013
Florida to get $1 million federal grant to study sinkhole vulnerability
The Florida Geological Survey and the state’s emergency department will receive a $1.08 million federal grant to study sinkhole vulnerability.
