The City of LA Non-Ductile Concrete Ordinance was passed last year and became effective on November 22, 2015. The Ordinance is titled “Mandatory Earthquake Hazard Reduction in Existing Non-Ductile Concrete Buildings” and is located under Division 95 in the City of LA Building Code. The ordinance states that existing buildings built under a permit dated earlier than January 13, 1977, framed exclusively with concrete for support of gravity loads are subject to the ordinance, with an exception for single family homes and duplexes.
Courtesy notifications from the City to affected building owners should be anticipated before the end of the year. An estimated 1,500 properties may receive notifications. Official Orders to comply will follow the notifications, which may be sent in phases with larger, taller, older, and high occupancy/critical buildings likely taking priority. From the date of receipt of the Order to Comply owners will have:
- 3 years: Submit completed checklist for review to determine if building is a non-ductile concrete building
- 10 years: Submit proof of previous retrofit, successful evaluation, or plans to retrofit or demolish and obtain permit to start construction
- 25 years: Complete construction
Under the ordinance, existing buildings need to be adequate for (or retrofitted to) 75% of the current building code seismic design forces, and pass additional checks for lateral stability.
Be prepared and stay informed! If you have concerns about the impact of the Ordinance contact us arrange for a confidential assessment by our qualified engineers.
A Task Group has been formed by SEAOSC at the request of LADBS to write a technical guide for the NDC Ordinance. This guide is due to be published this fall. We are lucky to have associate principal, Josh Gebelein of Brandow and Johnston who is serving as the chair of this Task Group. If there are any questions, please contact him at firstname.lastname@example.org