Posted Jul 19, 2020, 6:36 PM
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Dryer lint inspector
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Join Date: Feb 2003
Location: Houston/ SF Bay Area
Posts: 37,969
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Not very common here in Houston. Those that are were designed and built with the intent to add more floors at a later date. A building in Texas Medical Center added about 20 on a 5 story structure and there's a 10-story building downtown that about 15 stories for a W Hotel.
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