I am looking for some advice on how to strengthen in place a 4 ply 2x12 beam that is spanning 16 ft and supporting the second floor joist. I have had an engineer do the calcs and the beam is sufficent to cover that span but still has a 3/4" deflection in it. I am trying to figure out what I should do, I guess it is possible that it was just crowned improperly and it will not have any problems going forward but I am not sure I am ok with just leaving it as is since I am installing a kitchen underneath it. The beam is currently nailed together (has gaps between the 2x12) and spans from the exterior framed wall to a block wall inside the house.
I am open to hearing any thoughts or ideas.
Thanks for your help.