Right-Sizing Residential Plumbing with the Water Demand Calculator

This session will cover the benefits of using the California Plumbing Code’s Water Demand Calculator (WDC) to size plumbing in homes and apartment buildings. It is a solution that reduces water aging, delivers hot water faster, generates significant construction cost savings, reduces the carbon footprint of the structure, and subsequently saves on water- and water heating-related utility bills for the entire life of the plumbing system. Effective July 1, 2024, the WDC will become part of the California Plumbing Code (as Appendix M). Instead of using flow rates and flush volumes from the 1940s, the WDC will allow plumbing designers to “right-size” the cold and hot water distribution systems in homes and apartment buildings using modern information about flow rates and simultaneous use.

DETAILS

When: Wednesday, November 20th from 12:00 pm – 1:00 pm PST

Where: VIRTUAL (Zoom)

Note: All registered attendees will receive an email confirmation with the Zoom Information 24 hours priors to the event.

SPEAKERS

Gary Klein – Principal, Gary Klein and Associates

Gary Klein and Associates provides consulting on sustainability through their international team of affiliates. They are most focused on water-energy-carbon footprint issues with a particular emphasis on hot water. GKA provides consulting services and training to architects, engineers, builders, contractors and homeowners on the most effective ways to achieve sustainable buildings. Gary has been instrumental in the development of national codes and standards and incentive programs including ICC, IAPMO, ASHRAE, EPA Energy Star and WaterSense, LEED and NAHB.

Christoph Lohr, PE, CPD – Vice President, IAPMO

Focused Leadership. Respected Energy. Results-Oriented Expertise.  Christoph Lohr is IAPMO’s Vice President of Technical Services and Research.  As part of his duties he provides a systems-based approach to departmental leadership and strategy development, represents the organization in numerous committees and speaking engagements, and provide technical support to all IAPMO’s business units. Christoph has over a decade of experience in designing plumbing systems and has a reputation as a results-oriented expert, particularly in the realm of balancing waterborne pathogen prevention and water sustainability. He is a distinguished graduate from the Virginia Military Institute, with a Bachelor of Science in Mechanical Engineering.

Learning Objectives

1.) Differentiate the conditions that existed for the “default” water supply demand sizing method from the conditions that are incorporated into the Water Demand Calculator (WDC) when selecting a method for sizing peak water demand.
2.) Describe the savings in cost, water, energy, and carbon emissions achieved by using the WDC in the plumbing design of a multifamily building.
3.) Summarize the reduced public health and safety risk as well as water quality benefit of plumbing systems designed using the WDC when justifying the use of the WDC.
4.) Locate instructional resources for using the WDC in the plumbing designs of upcoming projects.

PDF PRESENTATION

2024 1120 AIA LA Chapter WDC Presentation FINAL

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