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
Codes and Standards | Apr 9, 2018
U.K. business leaders call for zero-carbon buildings by 2030
Real estate, construction industry executives among those supporting the goal.
Codes and Standards | Apr 5, 2018
In Houston, proposed rules would require building above 500-year flood level
Change would impact 85,739 pieces of property.
Codes and Standards | Apr 4, 2018
New ASTM standard supports stucco use in construction
Provides way to measure tensile strength in vertical applications.
Codes and Standards | Apr 3, 2018
LEED v4.1 O+M for Existing Buildings available for beta testing
Update said to be most inclusive and transparent platform to date.
Codes and Standards | Apr 2, 2018
Experts chosen for ICC, ANCR buildings resilience benchmarks project
Specialists to focus on community preparedness for disasters.
Codes and Standards | Mar 29, 2018
Contractors have paid $5.2 million for failing local resident employee mandate on Detroit arena
Companies were only able to meet half of the 51% local worker requirement over course of the project.
Codes and Standards | Mar 28, 2018
Washington State moving to promote mass timber construction with legislation
Bill would require all 12-story or less public buildings to be built with mass timber.
Codes and Standards | Mar 27, 2018
Los Angeles appoints its first chief design officer
Responsibility for enhancing civic architecture and urban design.
Codes and Standards | Mar 26, 2018
National Roofing Contractors Assn., releases updates to its Roof Wind Designer app
Significant changes to online wind-load calculator.
Codes and Standards | Mar 22, 2018
Global construction waste to almost double by 2025
Concerns in Houston, Minnesota over environmental impacts.
