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Perc 220

A Brief History of Plumbing Efficiency

The Formation of PERC and the Drainline Carry Research Project
Over the course of the past 25 years, manufacturers of plumbing products and appliances have been under strong market pressure...
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Dental Risk Assessment

Assessing health care dental medical gas categories.
John Gregory
Is your dentist capable of handling a life-threatening emergency? If you do an internet search for “medical gas accidents,” you...
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DIY
Designer's Guide

DIY

When you do it yourself, you walk away with some learning experiences. 
Timothy Allinson
SharkBite Correction: In January, I wrote a piece on copper pipe and fittings. In the article I touched briefly on...
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Water
Code Classroom

Update on Code Standard Activities

A recap of recent changes and announcements in the world of codes. 
Ron George
All of the hearings are completed for the International Codes published by the International Code Council (ICC), with the final...
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The Water Cocktail

Do you know the difference between tap and bottled water? 
Amidst rising concerns for water quality, I wanted to take the opportunity to debunk some water myths and shed some...
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Young Professionals + Integrated Design

Hollywood Blunders

When you know how to design a plumbing system, it’s difficult not to point out the impossible in movies. 
Cory Powers
It’s Oscar season, and by the time this is printed there will be a new Best Picture along with some...
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Return to 90 South

A look at systems between McMurdo and South Pole Stations.
Samuel S. Dannaway
As I write this I am sitting in a hotel room in Christchurch, New Zealand. This morning, our team will...
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