Each year, billions of dollars in damage to building foundations and structures is caused by shrinking and swelling behavior caused by clay soil.
In fact, expansive clay soil is the most predominant geologic hazard across the U.S. Several geotechnical solutions can alleviate these problems. On new construction, the options are: removal and replacement, capping or burying the expansive material, and treatment with hydrated lime. Structural solutions in new construction include upgraded structural slabs (post-tension, waffle, mat) or elevated slabs supported on deep foundations.
For an existing structure, a forensic geotechnical study is needed to identify and quantify damages, assign causation, and make appropriate recommendations for remediation. Moisture control may be a suitable option for remediation and it is a design requirement for new construction.
In extreme cases, helical anchors and slab (mud) jacking or removal and reworking of soil below an existing structure is necessary. For paved surfaces, expansive clay soils can be remediated with thicker sections of asphalt, reinforced concrete pavements, and lime treatment.
Related Stories
Legislation | Mar 16, 2022
Weak federal commercial real estate rules will hamper seizing Russian assets
Lax disclosure regulations that have made the U.S. a global hot spot for money laundering via real estate holdings will make it difficult for officials to seize properties from Russian oligarchs.
Codes and Standards | Mar 15, 2022
First company awarded Fitwel Certification in Senior Housing for Occupant Health & Wellness
The Springs at Greer Gardens in Eugene, Ore., is the first property to earn a Fitwel global health certification under the newly created senior housing scorecard.
Codes and Standards | Mar 10, 2022
HOK offers guidance for reducing operational and embodied carbon in labs
Global design firm HOK has released research providing lab owners and developers guidance for reducing operational and embodied carbon to meet net zero goals.
Codes and Standards | Mar 7, 2022
Late payments in the construction industry rose in 2021
Last year was a tough one for contractors when it comes to getting paid on time.
Codes and Standards | Mar 7, 2022
Massachusetts proposed energy code changes don’t ban gas
Proposed changes to the Massachusetts energy code would provide incentives for builders to fully electrify buildings, but not impose a ban on natural gas hookups.
Codes and Standards | Mar 4, 2022
Construction industry faces a 650,000 worker shortfall in 2022
The U.S. construction industry must hire an additional 650,000 workers in 2022 to meet the expected demand for labor, according to a model developed by Associated Builders and Contractors.
Codes and Standards | Mar 4, 2022
FAA offers $1 billion in grants for airport terminal and tower projects
The Federal Aviation Administration (FAA) is now accepting applications for about $1 billion in grants for airport projects during fiscal year 2022.
Codes and Standards | Mar 1, 2022
Engineering Business Sentiment study finds optimism despite growing economic concerns
The ACEC Research Institute found widespread optimism among engineering firm executives in its second quarterly Engineering Business Sentiment study.
Codes and Standards | Feb 28, 2022
Low-cost concrete alternative absorbs CO2
Researchers at Worcester Polytechnic Institute have developed a new CO2-absorbing material that’s a low-cost alternative to concrete.
Multifamily Housing | Feb 25, 2022
First set of multifamily properties achieve BREEAM certification in the U.S.
WashREIT says it has achieved certification on eight multifamily assets under BREEAM’s In-Use certification standard.
