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Re: boat lift constructed from I beams
Re: boat lift constructed from I beams -- bink	Post Reply	Top of thread	Forum

Posted by: swearingen ® 03/22/2006, 08:12:15 Author Profile eMail author Edit

It looks like a W14x90 will get you there (with a common 4:1 lift factor), but if you brace the beam along it's length adequately, you could reduce that size considerably. You can also reduce it by welding a channel lying flanges down on the top flange of the beam. As for a strong-back, you'll get greater capacity, but it must be properly designed. I must warn you, this is a large load and a long cantilever. I recommend you contact a local structural engineer to review the details. If it is not properly supported and braced, even a W14x90 won't work. There is also the potential for major damage or fatal injury.

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