The house is a 2 story 1925 Craftsman bungalow and it looks like a foundation was re-built around 1960. It is a crawl space with 20in tall unreinforced 6in wide concrete block stem wall. The blocks appear to be in good shape, however, they are hollow. I found this out when I was drilling to install seismic bracing anchors. Do these blocks need to be reinforced somehow since i’m in seismic zone D1? Pics attached.
With improved energy codes and more clean electricity coming online, the Phius program is leaning into comfort, durability, resilience, and flexibility for designers and builders.
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