Vahan Margaryan CPD, GPD
V.P. Technical

June 2024

Wow – there was nearly a hundred attendees at our May 8th meeting. There were attendees representing; LADWP, LADBS, The Gas Company, many design, construction and manufacture rep companies. I would like to thank Amir Taback, Armen Saiyan, Richard Garcia, James Kemper, Ku Hyon Song, Jorge Ibarra and many others at La Kretz Campus for making ASPE LA event unforgettable. Special appreciation to a very knowledgeable and great ASPE supporter, Christoph Lohr, for conducting and explaining IAPMO’s Water Demand Calculator® to our attendees – it was very surprising to acknowledge how much water systems are oversized with the current calculation methods. Thank you very much Christoph – great presentation and great questions from the audience! 

Try to attend our June meeting since there will be multiple very important announcements – introduction of the new ASPE LA Board of Directors, updates on Golf Tournament, family picnic, 2024 ASPE Convention and Expo, ASPE LA 60th anniversary Gala.  Here is a quick summary for those who cannot join the meeting in-person:

ASPE Golf Tournament is scheduled for June 14th at Brookside Golf Club.

ASPE LA Family Picnic soft hold for September 22 – subject to confirmation from Parks and Recreations

ASPE LA Chapter Special 60th Year anniversary Gala – pending for October 9th but Board will decide if the date should move to weekend to make it more formal.

ASPE 2024 Convention – ASPE LA Chapter will be sending nine delegates to the Convention. Candidates must be ASPE member in good standing and actively participated in ASPE LA meetings. Reach out to board members if you believe you qualify and willing to represent ASPE LA.

The California Building Standards Commission has approved the adoption of IAPMO’s Uniform Plumbing Code (UPC®) Appendix M—the Water Demand Calculator®—into the California Plumbing Code (CPC) as an alternative methodology for sizing water pipes in single- and multifamily buildings. The alternative approach will be available for statewide use on a voluntary basis starting July 1, 2024. The Water Demand Calculator® was discussed in details at our May ASPE LA meeting – so you should be ready to implement the calculation from July. There is a free test version is available on IAPMO’s website for your practice. 

Registration Is Open for the 2024 ASPE Convention & Expo in Columbus, Ohio. It will be held between October 18th till the 23rd. At this premier event, plumbing engineers, designers, specifiers, and contractors will explore cutting-edge innovations during tailored professional development sessions and the country’s largest tradeshow dedicated exclusively to plumbing system design products. If interested, please register at