SPC 4D is a Structural Performance Category that is part of the 2019 California Building Standards Code, which allows noncompliant buildings to go past the 2030 seismic compliance deadline.
Retrofitting SPC 1/SPC 2 buildings to the highest standard, SPC 5, would essentially require existing buildings to meet current code. This can be prohibitively expensive in most cases, and impossible in some others. Rather than requiring SPC 1 and SPC 2 buildings to retrofit to SPC 5, now such buildings can retrofit to SPC 4D. SPC 4D allows retrofit to a structural standard that is equivalent, similar or comparable to SPC 4 buildings, which are already approved to provide acute care services beyond 2030. SPC 4D is a voluntary program that will primarily be used to retrofit SPC 2 buildings. The retrofit work will need to be completed by 2030 to allow acute care services to remain in the existing noncompliant buildings beyond the statutory deadline of 2030. It contains no milestones or other due dates. SPC 4D projects can be submitted to HCAI/OSHPD now.
Both hospitals and their communities will benefit from SPC 4D. Hospitals that may benefit are those that have older SPC 1 and SPC 2 buildings that are at the center of their campus and surrounded by newer hospital buildings, where removal of such buildings from service could result in the communities’ loss of a General Acute Care hospital. Where older buildings cannot be easily replaced or retrofitted to current code, such buildings may be able to retrofit to the SPC 4D standard. Particularly those facilities with SPC 1/SPC 2 buildings in areas of low seismicity, including many rural parts of California, may find retrofitting to SPC to SPC 4D a cost-effective option.
These regulations have an effective date of 1/1/2019
SPC 4D Upgrade Process
The SPC 4D Upgrade process requires submittal of multiple projects to the Seismic Compliance Unit and the Building Safety Section of OSHPD. The flowchart below (click the image to download) illustrates the recommended order of submittal of projects to OSHPD.
How to Apply
- How do I submit a Geotech/Geohazards Report for review?
- How do I apply for an SPC 4D Material Testing and Condition Assessment Program (MTCAP)?
- How do I apply for an SPC 4D Upgrade?
- If retrofit is required, how do I submit an H/I project to the Building Safety Section?
For questions regarding SPC 4D Regulations, please email the Seismic Compliance Unit.