Builder has done this ……

[Annoyedcutomer1]

Correct. Shear maximum at beam ends, and bending moment maximum at middle - this is for a simply supported uniformly loaded beam.

The notched beam still has to carry the shear. For short highly loaded beams the shear can govern the choice of the beam size, although most beams are long (relative to their depth) and the bending capacity governs the design. Meaning there should be plenty of shear capacity.

Still, the liability for the solution implemented has to be with someone. I too would definitely strengthen this.

thanks Bertie

Will have a new builder bond on structural ply to either side of the webs to bearing end. The engineer said strike a 45 degree angle from the corner of the notch to the upper flange and add 100mm which will govern how long the ply needs to be.