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HVAC/ACR International Mechanical Code

Five Important Changes to the 2021 International Mechanical ...

The new 2021 International Mechanical Code (IMC) has been published and is available to adopt. There are 33 significant changes to eight chapters […]

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Mass Notification in Today’s World

April 20th, 1999, two young men walked into Columbine High School and forever changed the world. Then came April 16th, 2007 (Virginia Tech), Decem[…]

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Are We Running Out of Water?

The World Wildlife Fund (WWF) reports some 1.1 billion people worldwide lack access to water, and a total of 2.7 billion people find water-scarce a[…]

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Water

Reducing Lead Exposure Through Drinking Water

There is no safe level of lead in drinking water, but a zero goal, though laudable, is at present an unattainable goal. The policing of lead in drinki[…]

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2020 National Electrical Code

Everyday Electrical Safety

Electrical contractors come in a wide variety of sizes. Top electrical contractors employ thousands of people and gross hundreds of millions of doll[…]

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2020 National Electrical Code

NEC 70, Article 250, Section 250.121(B), Metal Frame of Buil...

Article 250 is arguably the most important article in NEC 70, and much of its content is devoted to the proper sizing and installation of equipm[…]

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