Research at Case Western Reserve University has found that buildings that rock during an earthquake and return to plumb would withstand seismic shaking better than structural designs commonly used today in vulnerable zones of California and elsewhere.
Those buildings would also be more easily and cheaply repaired and could be put back into use faster, said Michael Pollino, an assistant civil engineering professor at Case School of Engineering. The computer model research suggests optimal sizes for damping devices and steel yielding devices that dissipate the energy of a quake.
Pollino’s model compares rocking steel-braced frames to current earthquake standards used in low- to mid-rise buildings. "Currently, engineers are designing low-rise structures for an earthquake that has a 10% chance of occurring in a 50-year-lifetime," Pollino said. "We accept there will be damage, but no collapse or loss of life. But what about an event that has a 50% chance of occurring? You may still have to tear the building down afterward.”
Pollino and other researchers are finding advantages to the design, which has not yet made it into practice. He and colleagues are discussing forming a technical committee of civil engineers that would advance the technology into practice. Pollino is now applying for funding to begin physically testing designs in the university's structures laboratory.
Related Stories
Codes and Standards | Aug 16, 2017
Big changes coming to Ontario building code
Proposals include solar-ready roofs, more stringent heating/cooling efficiency requirements, and graywater reuse.
Codes and Standards | Aug 15, 2017
ASHRAE certifications recognized by DOE as meeting Better Buildings Workforce Guidelines
Two of six such certifications are ASHRAE programs.
Codes and Standards | Aug 14, 2017
New edition of AISC Steel Construction Manual now available
Includes the 2016 Specification for Structural Steel Buildings.
Codes and Standards | Aug 10, 2017
AAMA releases updated Standard Test Method for Water Penetration Using Dynamic Pressure
The update applies to windows, curtain walls, and doors.
Codes and Standards | Aug 9, 2017
UpCodes aims to make researching building codes, regulations easier through searchable app
App currently includes building codes of 40 states and New York City.
Codes and Standards | Aug 8, 2017
3D printing industry working to implement standards for products, processes
Additive Manufacturing Standardization Collective (AMSC) will develop industry-wide additive manufacturing standards and specifications.
Codes and Standards | Aug 7, 2017
Council on Tall Buildings and Urban Habitat to create standards to measure floor area
The standards will examine existing codes and regulations to find where they are too broad or contentious.
Codes and Standards | Aug 3, 2017
ASID headquarters is first space in the world to earn both LEED and WELL Platinum Certification
Washington, D.C. office is showcase for top levels of the two standards.
Codes and Standards | Aug 2, 2017
OSHA to release web-based injury and illness reporting form on August 1st
Employers can use the application to submit forms electronically.
Codes and Standards | Aug 1, 2017
Zoning that restricts housing construction also dampens other economic development
Land use restrictions reduce U.S. GDP by 9% annually.