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engineering question
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john"Scooter" nauman
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There is a term used in the engineering field and I’m trying to remember what the term is. Example: This bridge is rated at 10 tons but it was designed with the 1.5 rule which means it can actually hold up to 15 tons. Does any one know what that term is. And no, it’s not over engineering. LOL
posted November 30, 2011 11:43 (
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Mark Eilertsen

There is Factor of Safety and Margin of Safety and they are two related but different terms.

Factor of Safety = Material Strength / Design Load

Margin of Safety = Failure Load / Design Load – 1

Margin of Safety = Factor of Safety – 1

Mark
Mechanical Engineer
Gensenius engineering Services
gensenius.com

posted December 09, 2011 15:28 (
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Jerry Riggs
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It might also be called the margin of error.

posted November 30, 2011 12:46 (
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john"Scooter" nauman
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Adie thats it! Thank you.

posted November 30, 2011 11:57 (
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Adie Daly

Safety factor? Submarines have a maximum safe depth and a crush depth. The maximum safe depth is usually a fractional multiple (factor) of the crush depth, such as one half, just to be safe.

posted November 30, 2011 11:55 (
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