Thirty-nine high rises in San Francisco are at risk of collapse in a major earthquake, according to a new study by the U.S. Geological Service (USGS).
The vulnerable buildings (known as welded steel moment-frame buildings) were constructed by using a flawed technique to weld columns and beams together. This technique was found to be less resilient to seismic activity after the 1994 Northridge earthquake in Los Angeles where critical joints were damaged in several buildings that had been welded.
The building code was revised in the mid-1980s to require more stiffness, and then again in the mid-1990s to correct the defective welding technique. San Francisco outlawed the technique in1994 after damage from the Northridge quake on high rises was discovered. The list of vulnerable structures includes the former Bank of America building, the headquarters of Pacific Gas and Electric, three hotels, and the Salesforce West tower.
San Francisco has offered incentives to repair at-risk buildings. In 2009, the city expedited permits and agreed to waive fees for so-called “soft-story buildings” that have garages or windows on the bottom floor.
Related Stories
Urban Planning | Aug 15, 2024
New York City begins first large-scale porous pavement installation
New York City is installing its first large-scale porous pavement installation along seven miles of roadway in Brooklyn. The project will keep 35 million gallons of stormwater out of the combined sewer system each year, according to a news release.
Government Buildings | Aug 14, 2024
GSA releases updated standards to move federal buildings toward zero emissions
The U.S. General Services Administration (GSA) recently released updated building efficiency standards for federal buildings. The mandatory design and construction standards and performance criteria apply to 300,000 federal buildings.
MFPRO+ News | Aug 14, 2024
Report outlines how Atlanta can collaborate with private sector to spur more housing construction
A report by an Urban Land Institute’s Advisory Services panel, commissioned by the city’s housing authority, Atlanta Housing (AH), offered ways the city could collaborate with developers to spur more housing construction.
Energy Efficiency | Aug 9, 2024
Artificial intelligence could help reduce energy consumption by as much as 40% by 2050
Artificial intelligence could help U.S. buildings to significantly reduce energy consumption and carbon emissions, according to a paper by researchers at the Lawrence Berkeley National Laboratory.
Products and Materials | Aug 8, 2024
EPA issues $160 million in grants for clean manufacturing of steel, other construction materials
The U.S. Environmental Protection Agency will provide 38 grant recipients with nearly $160 million to support efforts to report and reduce climate pollution from the manufacturing of construction materials and products.
Green | Aug 7, 2024
Major cities worldwide set building performance standards
Cities around the world are setting building performance standards (BPS) as a key measure to cut emissions and meet climate targets, according to a report from JLL.
Codes and Standards | Aug 6, 2024
New tool helps with selection, installation of heat pump water heaters
A new web-based tool by the Department of Energy offers comprehensive information about how to size, select, and install electric heat pump water heaters (HPWHs).
Regulations | Aug 4, 2024
Diversity rules largely ignored on Boston construction projects
Not a single construction project in Boston over the past four years has met all the rules intended to diversify the construction industry and increase the number of city residents working on construction sites, according to a report in the Boston Globe.
MFPRO+ News | Aug 1, 2024
Canada tries massive incentive program to spur new multifamily housing construction
Canada has taken the unprecedented step of offering billions in infrastructure funds to communities in return for eliminating single-family housing zoning.
MFPRO+ New Projects | Jul 31, 2024
Shipping containers converted into attractive, affordable multifamily housing in L.A.
In the Watts neighborhood in Los Angeles, a new affordable multifamily housing project using shipping containers resulted in 24 micro-units for formerly unhoused residents. The containers were acquired from a nearby port and converted into housing units at a factory.