We cannot predict earthquakes, but we can predict how a building performs in an earthquake. Seattle has 1,100 unreinforced masonry (URM) buildings that are vulnerable to collapse in an earthquake because they lack structural reinforcements. SDCI is supporting efforts to seismically retrofit these buildings. SDCI is coordinating with first responders… [ Keep reading ]
The City of Seattle is holding a listening session for developers and owners of URM buildings for a proposed new Transfer of Development Rights (TDR) program to support seismic retrofits of URM buildings. The Seattle Department of Construction and Inspections (SDCI) and Office of Planning and Community Development (OPCD) are hosting this meeting on Tuesday, February 27 from 1:30 – 3:30 p.m. in the Bertha Knight Landes Room in Seattle City Hall. You can register and view the meeting agenda for this in-person event on the Unreinforced Masonry Buildings website.
Reflecting on seismic activity in 2023, nine deadly and damaging earthquakes occurred globally. In February, Turkey and Syria experienced two earthquakes over magnitude 7.5 that killed over 59 thousand people. In September, Morocco experienced a magnitude 6.8 earthquake that killed almost three thousand people. In October, Afghanistan experienced a magnitude 6.3 earthquake that killed over one thousand people. In November, Nepal experienced a magnitude 5.7 earthquake that killed over 150 people. In December, China experienced a magnitude 5.9 earthquake that killed 149 people. Four additional earthquakes in Afghanistan, Ecuador, Turkey, and the Philippines each resulted in deaths of ten or more people. While earthquakes cannot be predicted, we know Seattle will experience a damaging earthquake in the future and we can predict how buildings will perform in an earthquake. 2023 was a year of progress and milestones in advancing the seismic resilience of Seattle’s unreinforced masonry (URM) buildings, buildings that are prone to collapse in an earthquake.
SDCI is celebrating a major milestone on the pathway to improving Seattle’s earthquake safety. On September 26, 2023, the Public Safety and Human Services Committee voted 5-0 to refer Resolution 32111 to a Council vote. This resolution supports the development of a voluntary seismic retrofit ordinance that will establish a minimum seismic safety standard for the retrofit of unreinforced masonry (URM) buildings. URM buildings are classic red brick buildings, generally constructed before 1945, and are prone to collapse in an earthquake. Seattle has 1,100 URM buildings and an 86% chance of experiencing a damaging earthquake in the next 50 years. Adopting a mandatory URM retrofit ordinance continues to be the City’s long-term goal. However, adding a short-term goal to adopt a voluntary URM retrofit ordinance provides assurance to URM building owners that by retrofitting to the established standard, they will be compliant with future mandatory requirements. Resolution 32111 is scheduled for a vote by full Council on October 10.
In June, SDCI conducted two public webinars on the draft Unreinforced Masonry (URM) Retrofit Technical Standard. This document is the first step in establishing minimum seismic standards for the earthquake retrofit of Seattle’s 1,100 vintage brick buildings which are prone to collapse in an earthquake due to lack of structural reinforcements. The draft URM Retrofit Technical Standard will inform the future mandatory retrofit ordinance. Be sure to check out the slides and recordings from these presentations. To support building owners that are eager to begin the retrofit process, SDCI is moving forward with adopting components of the draft URM Retrofit Technical Standard with Director’s Rule 6-2023, Alternate Method for the Seismic Improvement of Unreinforced Masonry Buildings (URMs). The draft Director’s Rule is available now for public comment.
After several years of collaborating with seismologists, geologists, and geotechnical and structural engineers, the Seattle Department of Construction and Inspections (SDCI) is sharing its draft Unreinforced Masonry (URM) Technical Standard. This document is the first step in establishing minimum seismic standards for the earthquake retrofit of Seattle’s 1,100 vintage brick buildings which are prone to collapse in an earthquake due to lack of structural reinforcements. In 2021, an effort spearheaded by the Alliance for Safety, Affordability, and Preservation (ASAP!) and Councilmember Herbold resulted in the passing of Joint Resolution 32033. That resolution declared the intent of City Council and the Mayor to establish a mandatory retrofit program and directed SDCI to develop a retrofit standard. While a mandatory ordinance is still a few years away, this Technical Standard will serve as a voluntary option for URM owners wanting to retrofit their building. This Technical Standard will be used to develop a future mandatory retrofit ordinance.
The City of Seattle is moving forward with the process to require the earthquake retrofit of its 1100 unreinforced masonry buildings (URMs) which are prone to collapse in an earthquake. In 2021, City Council passed Resolution 32033 declaring the intent to develop a mandatory earthquake retrofit ordinance with a resource program to support URM building owners and tenants. On January 12, the Seattle Department of Construction and Inspections (SDCI) and the Office of Emergency Management (OEM), in partnership with the Alliance for Safety, Affordability, and Preservation (ASAP!), hosted a meeting to discuss the timeline and next steps needed to be successful in ordinance adoption.
