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I am looking to make a small notch in an LVL beam in my basement. In full transparency, I have installed a golf simulator in my basement, and I need another 2-3 inches of height to swing a driver freely. I would like to make a notch that is roughly 2 ft wide by 3" deep. My basement has 2x12" LVL Boise Cascade joists and every other beam has a sistered joist for added support that I had the builder include for strength. The notch would be in the highlighted area, which is roughly 3ft from a steel structural support beam going through the middle of the basement.

What I am thinking would be to add a steel plate on each side of the notched joists making a "flitch plate". The steel plates would be 5ft long x 5" high x 1/2" in depth. Use bolts to run through the plates and the sistered LVL's to connect each steel plate to the LVL's to "sandwich" the LVL's that are notched between the steel plates.

Would this work? Would I need a different size steel beams? What type of fasteners are needed (would need to use bolts).

Thank you! enter image description here

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    I think it's interesting that you have this down to knowing you need an extra 3" of height. I'm not a golfer at all, but does this not change with the club you are using? You're sure that 3" out of that one joist is going to do the job? Not arguing, just curious. – JPhi1618 Apr 25 at 15:48
  • I'm a 2 handicap in golf and my swing is grooved really well to know that 3" of height will work to swing a driver freely. I have a padded protected area that I will sometimes just barely hit, so 3" should be more than enough. Every other club but the driver is much shorter, so I don't come even close to making contact. – J Geyer Apr 25 at 16:32
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    I'd just hate for you to commit to all that work and then find you were wrong by 2". Have you ever lifted a 60"x6"x0.5" hunk of steel? Why so thick? – Harper Apr 25 at 16:37
  • Yeah, I've done something similar, only with a beam instead of a joist, and 2x 1/4" mild steel was adequate. – isherwood Apr 25 at 16:42
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    Could you rotate the simulator so your swing goes parallel with the joists instead of perpendicular? – kponz Apr 25 at 19:48

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