Plumbing & Mechanical Engineer

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Gary Hayden is a man of many talents. A licensed Professional Engineer in Virginia and eight other states, the 63-year-old’s career has taken him from product development to design and finally, the implementation of radiant and hydronic systems.

 While most plumbers may like to think that they’re mostly serving routine maintenance or installation customers, the most common nature of those calls is likely panicked customers with a burst pipe, a backed-up toilet or another emergency that needs a response ASAP.

There is a battle going on in the industry when it comes to domestic water distribution systems, and it lies in how plumbing engineers size domestic water piping. System longevity, pressure drop, water age, noise and building codes will influence the approach taken in sizing a domestic water system.

In 2012, the International Association of Plumbing and Mechanical Officials (IAPMO), the University of Cincinnati (U of C), and the American Society of Plumbing Engineers (ASPE) began to work on a new sizing technique 80 years in the making. The main drivers were Dan Cole (IAPMO) and Steve Buchberger (U of C), and later Toju Omaghomi (U of C). As part of this effort, hundreds of thousands of data points were taken and evaluated to determine actual human behavior and plumbing fixture use in residential homes.

Common sense runs through our veins and helps us avoid idiotic, absurd edicts handed down by well-intentioned, but seriously misguided politicians. The fact is, I’ve always felt that common sense, along with training and knowledge, often handed down from generation to generation, guides our hands and minds as we toil at PHVAC issues.

One of the best things about hydronic heating systems is that it’s easy to integrate some method of domestic water heating. This combination has been used for decades in systems where a boiler was the sole heat source. It’s also possible when a heat pump serves as the heat source.

Dr. Saum Nour (Khosrow Nourmohammadi), PE, Ph.D., CPD, LEED AP, CFPE, AIA Allied, is a very well-educated man. Just a quick glance at all the acronyms after his name may have some people feeling a bit intimidated. His deep knowledge of the industry, constant pursuit of education and willingness to help others learn has nabbed him the award for PM Engineer’s 2022 Plumbing Engineer of the Year.

A little-known fact about solar electric panels is that the hotter the panel itself, the less efficient it becomes. Studies have found a 0.05% efficiency loss for every degree of temperature that is increased. The reverse is true in that efficiency increases by 0.05% for every degree temperature decreases.

Recently, the question was asked on ASPE’s Open Forum “Foundation drain pipe — plumbing responsible? Or only between civil and structural?” As originally posted, the designer did not have a Geotech report. But the structural consultant did show the piping around the top of the elevator footing and the perimeter footing for the foundation in their details.

It hasn’t taken long for some of the most obvious unintended consequences to appear: More people are complaining that their shower experience is deteriorating due to lower flow rates, and shower times are increasing as people have to shower longer to wash the shampoo out of their hair.