17 Things to Know About the Updated CSA/ANSI/IGSHPA C448 Standard It’s time for a summer catch-up. Please take the opportunity to review Lisa Meline’s review of the new C448 Standards from our previous Underground Session. https://www.californiageo.org/wp-content/uploads/video1851990649-17-Things-to-know-about-the-Updated-CSA-ANSI-IGSHPA-C448-Standard.mp4 Posted in Uncategorized ← Registration for the Underground of 4-17-24 on GHP Changing Standards Read Blog #99 on coming winter temperatures →
