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The laser—light amplification by stimulated emission of radiation—has been ranked by some, along with the transistor and computer, among the most important inventions of the 20th century. Narrow laser light...

I recently read a specification phrase I had never seen before. It said, “For the purpose of derating, all neutrals shall be considered to be current-carrying conductors.” Estimators need to...

I recently learned of a clause that a large general contractor has put in its contracts’ terms and conditions that make certain types of behavior a breach of contract. The...

When lightning strikes a building, facility owners are either grateful for their lightning protection system, or wish they had one. That is more true today than ever—as weather gets more...

Passengers traveling through Philadelphia’s 30th Street Station used to gaze up at a traditional, split-flap mechanical sign, while the whirring and clacking sounds of the updating train and platform information...