'Underground climate change' can damage building foundations, civil infrastructure

A phenomenon known as “underground climate change” can lead to damage of building foundations and civil infrastructure, according to a researcher at Northwestern University.

When the ground gets hotter, it can expand and contract, causing foundations to move and sometimes crack. The Northwestern study focused on Chicago, which has a predominately clay subsurface that can contract when heated.

The concern is not limited to the Windy City, though, as many other urban zones contain fine-grained soils that are vulnerable to such deformations. Cities are more likely than rural areas to feel the effects of underground climate change because construction materials trap heat that is transferred below ground. The research team found temperatures under the densely developed Chicago Loop were often 10 degrees Celsius warmer than those under Grant Park.

Underground climate change will not cause sudden failure like a building collapse, rather it is a slow process that degrades structures over the years. To counteract this trend, building teams can reduce the amount of heat entering the ground by installing thermal insulation.

FEMA recently unveiled the initial designation of 483 census tracts that will be eligible for increased federal support to boost resilience to natural hazards and extreme weather. The action was the result of bipartisan legislation, the Community Disaster Resilience Zones Act of 2022. The law aims to help localities most at risk from the impacts of climate change to build resilience to natural hazards.

Metals | Sep 11, 2023

Best practices guide for air leakage testing for metal building systems released

The Metal Building Manufacturers Association (MBMA) released a new guidebook, Metal Building Systems - Best Practices to Comply with Whole-Building Air Leakage Testing Requirements.

Codes and Standards | Aug 31, 2023

Community-led effort aims to prevent flooding in Chicago metro region

RainReady Calumet Corridor project favors solutions that use natural and low-impact projects such as rain gardens, bioswales, natural detention basins, green alleys, and permeable pavers, to reduce the risk of damaging floods.

Sustainability | Aug 15, 2023

Carbon management platform offers free carbon emissions assessment for NYC buildings

nZero, developer of a real-time carbon accounting and management platform, is offering free carbon emissions assessments for buildings in New York City. The offer is intended to help building owners prepare for the city’s upcoming Local Law 97 reporting requirements and compliance. This law will soon assess monetary fines for buildings with emissions that are in non-compliance.

Resiliency | Aug 7, 2023

Creative ways cities are seeking to beat urban heat gain

As temperatures in many areas hit record highs this summer, cities around the world are turning to creative solutions to cope with the heat. Here are several creative ways cities are seeking to beat urban heat gain.

Products and Materials | Jul 31, 2023

Top building products for July 2023

BD+C Editors break down 15 of the top building products this month, from cleanroom doors to window storm protection systems.

Sustainability | Jul 27, 2023

USGBC warns against building energy code preemptions, rollbacks

In a recent editorial, the USGBC cited a growing number of U.S. state legislators who are “aiming to roll back building energy code standards and/or preempt local governments from advancing energy-efficient building codes.”