David Dexter

September 2023 Professional Engineer’s Perspective: Why Has the Profession Allowed Various Interests to Produce Differing Model Codes?

September 5, 2023

It is interesting to note that engineering principles are based on science, physics, and mathematics. Regardless of where they are applied, these engineering principles remain unchanged—so why do the plumbing […]


June 2023 Professional Engineer’s Perspective: What You Should Know About ASPE Design Standards

June 28, 2023

Ever since the official founding of the American Society of Plumbing Engineers on September 18, 1964, its mission has been to be the voice of plumbing engineering to the global […]


How Design Professionals Can Work with Owners to Keep Private Systems Safe

May 15, 2023

Recently, I wrote an article regarding potable water and backflow protection. Water is something that most of us take for granted, until we cannot find a clean and reliable source. […]


How Not Understanding Your Systems Can Lead to Life-Threatening Consequences

February 1, 2023

Recently, I was contacted by a colleague regarding my thoughts on IPC (International Plumbing Code) Section 608: Protection of Potable Water Supply. A designer within their office had provided RPZ […]


Legally, How Do the Responsibilities of Engineers and Designers Differ?

December 1, 2022

The vertical building market includes many different professionals—architects, engineers, designers, contractors, building officials, etc.—and we all have a place within the market. We also have some common interests: protecting the […]


Plumbing Talking Points: What Is Foundation Drainage and Who Is Responsible for It?

September 13, 2022

Recently, several discussions on ASPE Connect’s Open Forum have explored foundation drainage: Storm Drainage Connecting to Foundation Drainage, Renovating Old Foundation Drain Pipes, and Foundation drain pipe – Plumbing responsible? […]


What Is the Plumber’s Ultimate Responsibility in Installing Plumbing Systems?

August 5, 2022

Recently, the senior plumbing estimator for a local construction manager asked me what I thought was the plumber’s ultimate responsibility. The question was asked to help in the development of […]


How Will the Development of a New PE Exam Specification Impact the CPD Program?

May 12, 2022

A recent discussion on the ASPE Connect Open Forum regarded professional registration and the potential development of a PE exam within the National Council of Examiners for Engineering and Surveying […]


What Are the Limits and Restrictions on a Code Administrator’s Authority?

March 8, 2022

Recently, I have heard comments such as: “The inspector didn’t catch it until after the piping was installed and concrete floors were poured. It cost the company $500,000 to revise […]


Why Nationally Recognized Standards Are Important in the Vertical Build Market

February 4, 2022

In our profession, standards are referenced and employed as a basis of design in specifying materials and, to a certain extent, the means and methods of installation. However, not everyone […]

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