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
| Jan 2, 2014
Green infrastructure prominent in Akron, Ohio's sewer plans
City officials in Akron, Ohio want to prevent stormwater from entering its combined sewer system through the use of green infrastructure.
| Jan 2, 2014
OSHA to hold public meeting on proposed rule to improve tracking of workplace injuries
The Occupational Safety and Health Administration (OSHA) has scheduled a public meeting to allow interested parties to comment on the proposed rule to improve tracking of workplace injuries and illnesses.
| Jan 2, 2014
Measuring whole building energy use among big changes in LEED v4
A new prerequisite in LEED v4 calls for each project to measure whole building energy use, and then share that data with USGBC.
| Jan 1, 2014
San Francisco hosts Net Positive Energy + Water Conference
The Living Building Challenge’s Net Positive Energy + Water Conference will be held Feb. 4-5 in San Francisco.
| Dec 27, 2013
California’s new Title 24 energy code compliance date pushed back to July 1, 2014
Due to the stringency of the provisions in California’s new Title 24 energy codes, their implementation has been postponed until July 1, 2014 to allow jurisdictions and engineers to prepare for them.
| Dec 27, 2013
$1 billion 'city within a city' development approved by Coachella, Calif., city council
The mega development includes 7,800 homes, a retail center, office space, and nearly 350 acres of open space.
| Dec 26, 2013
OSHA may require companywide reporting of injuries and illnesses
The Occupational Safety and Health Administration is considering a change in policy that would require organizations to submit company-wide data on illnesses and injuries.
| Dec 26, 2013
USGBC recognizes Ohio for achieving 100th LEED-certified public school
The U.S. Green Building Council (USGBC) has recognized the state of Ohio and the Ohio School Facilities Commission (OSFC) on the LEED certification of the 100th public school building in the state.
| Dec 26, 2013
WDMA launches project to create ISO-compliant architectural doors
WDMA's National Architectural Door Council has initiated a project to create ISO-compliant Product Category Rules for architectural wood flush and stile and rail doors
| Dec 19, 2013
Defense Department okays Green Globes standard for DoD facilities
The Green Globes certification program from the Green Building Initiative can be used for the renovation and construction of Department of Defense facilities following agency endorsement.