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).