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HVAC piping systems

Christoph Lohr: Understanding the reasoning behind Hunter's Curve

Misunderstanding Roy
Pme0819 lohr newsheadshot
Christoph Lohr
July 6, 2022
One Comment

After four grueling years at the Virginia Military Institute, upon graduation as an engineer, I decided to follow my own prudent path: I would find the best paying job in an area with the lowest cost of living that afforded me training opportunities. I knew myself well enough that I didn’t want to be stuck behind a desk; I desired interpersonal contact. I always aspired to be an engineering leader — and felt consulting would be the best route to that end.


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plumbing engineering

Ethan Grossman: Zen and the art of plumbing engineering

Understanding water chemistry while design all types of systems is paramount.
Ethan Grossman P.E., CPD
July 5, 2022
No Comments

Much of our learning in life comes from a consistent curiosity. Sometimes it can take years before we have an epiphany about something that may have puzzled us in the past. Experiencing that feeling of calm satisfaction wash over us after the initial spark of understanding is sometimes known as “Zen.”


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Next Gen All Star Top 20 Under 40 contest

Nicole Krawcke: Help recognize outstanding individuals in the plumbing industry

Nicole krawcke
Nicole Krawcke
July 4, 2022
No Comments

It’s awards season for PM Engineer.


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controller that measures and responds to temperature

John Siegenthaler: Sensor placement is critical to designing successful hydronic systems

Sensible details
Siegenthaler
John Siegenthaler P.E.
July 1, 2022
One Comment

All hydronic systems designed around renewable energy heat sources — as well as those designed around conventional boilers — have at least one controller that measures and responds to temperature. Common examples are temperature setpoint controllers, outdoor reset controllers, mixing controllers and differential temperature controllers. Complex systems that operate in multiple modes, or use multiple heat sources, often have several temperature-based controllers.


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Right-sizing plumbing systems

Julius Ballanco: Right-sizing plumbing systems for large arenas and stadiums

Big flush — big joke
Ballancojuliusvwhite 200
Julius Ballanco P.E., CPD
June 30, 2022
No Comments

The 7th Emerging Water Technology Symposium (EWTS) was held in San Antonio the second week of May. The Symposium is sponsored by the leading plumbing groups: IAPMO, ASPE, PMI, World Plumbing Council, and the Alliance for Water Efficiency. This two day Symposium always has some interesting presentations.


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the Emerging Water Technology Symposium (EWTS), which was held in San Antonio May 10-11
EDITOR’S NOTE

Nicole Krawcke: Plumbing industry addresses key water issues during seventh EWTS

Engineers, manufacturers, utilities and code officials gathered in San Antonio, Texas, May 10-11.
Nicole krawcke
Nicole Krawcke
June 13, 2022
No Comments

It’s been more than two years since I took over PM Engineer from my predecessor. What a wild and crazy time that was — the COVID-19 pandemic was just getting started and lockdowns were being mandated. Needless to say, I didn’t get out much that year, or even last year, for that matter.


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The magic of the simple air vent
HEATING HELP

Dan Holohan: The magic of the simple air vent

You never know what knowledge you’ll discover by reading old literature.
Holohan
Dan Holohan
June 10, 2022
No Comments

 recently came across the December 1924 issue of Popular Science magazine. Reading stuff like that always makes me feel like I have a time machine.


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Running horizontal drains
Plumbing Talking Points

David Dexter: Running horizontal drains

A discussion on the minimum burial depth or pipe cover required.
Pme0222 siegenthaler head
David Dexter
June 8, 2022
No Comments

Let us get down in the dirt, or at least “backfill.” A recent discussion on ASPE Connect’s “Open Forum” was entitled “Minimum Pipe Cover when Calculating Invert Under Building Slab for PVC Sanitary.”


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Safe drinking water
STRATEGIC PLUMBING INSIGHTS

Christoph Lohr: The increasing frequency of plumbing failures

Unintended consequences
Pme0819 lohr newsheadshot
Christoph Lohr
June 6, 2022
No Comments

“It couldn’t happen where I live.” Many in the United States probably thought that when watching the horror occurring in Flint, Michigan, from 2014 to 2016.


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Viscosity is the measure of a fluid’s resistance to flowing at a given rate.
WATER COOLER CONVERSATIONS

Ethan Grossman: Understanding thixotropy and viscosity in plumbing and mechanical engineering

The proof is in the pudding
Ethan Grossman P.E., CPD
June 3, 2022
No Comments

Some of us may remember a day when ketchup was placed in thick glass bottles with skinny necks. I’d like to meet the person who came up with that idea and kindly ask, “What were you thinking?” 


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