I have worked for your local wires provider in Houston for a little over 50 years designing T-Line structures when it was HL&P. I know a few people on the NESC and the consensus from the structural folks on the committee is the EE's on the committee vote ...
I believe the logic is one of convenience for the power distribution companies. Those involved in transmission systems (taller than 60ft), typically use sophisticated software that can easily include this extra weather load case; including the variation ...
The Man Who Saved the Skyscraper (mentalfloss.com) "One day, Khan was sitting in the Hancock's open-air plaza when two women began admiring the building. As his daughter writes, Khan couldn't help but eavesdrop. " 'The diagonals,' one woman explained, ...
What is the logic for the 60 ft or greater? Most utility poles are less than 60 ft. ------------------------------ Mitch Winkler P.E.(inactive), M.ASCE Houston, TX ------------------------------
Extreme wind loading is covered by Rule 250C in the NESC. Per the 2023 NESC Handbook: Rule 250C was added in 1977 and recognizes that tall structures may be subjected to wind only loadings that exceed the combined ice and wind loadings included in ...
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