If structural engineers have their way, building codes will take a historic leap forward in the next few years to allow higher-strength 80-ksi reinforcing steel, instead of 60 ksi, in reinforced concrete shear walls.
Projects sited in areas with the worst soil—in high-risk seismic zones and subject to liquefaction—would require more than one geotechnical engineer on the peer-review team.
The city and county Dept. of Building Inspection issued interim guidelines and procedures for structural, geotechnical and seismic-hazard engineering design review for new buildings 240 ft or taller.
Based on 2016 tests of a composite cross-laminated timber-and-concrete floor system, architect-engineer Skidmore, Owings & Merrill has released guidance on how to analyze composite timber floors and predict their behavior in wood frames.
Earlier this month, just over two years after Los Angeles passed a law requiring seismic retrofits of older, nonductile concrete buildings, the city’s Dept. of Building and Safety began sending compliance orders to owners.
Steel interests have misgivings about the fairness of a California law, enacted last month, intended to minimize carbon footprints of certain construction materials used in state-funded building projects by requiring all products to have a global warming potential less than the industry average.
Two Applied Technology Council hazard-mitigation projects targeting nonductile concrete buildings are benefitting from information gathered during an Oct. 9-13 reconnaissance trip to Mexico City, less than a month after the Puebla-Morelos earthquake.