Well everyone loves a good OcUK drama, so lets see how bad this is.
Fast forward a few weeks, smaller blue beam is in, was told joists being cut, happy days.
I come back one day, and find it like this:
(it has since being welded, with no additional plates)
I'm no Structural engineer but alarm bells ringing. Building control came out, they are also not happy.
Original SE calcs delivered size of beam and in-web connection.
Apparently it could not be aligned due to floor height. Aka, he put the big beam in too high and cannot back track.
Building control and my architect have never seen a beam connected like this.
Builder claims he has done it before.
Currently its with the builder and SE to deliver more accurate calcs reflecting the joint shown.
Hopefully they can arrive at a plated design that satisfies calcs and building control, otherwise I'll be looking at a huge mess to sort out, already lost confidence in builder, and my own sense of judgement! (How can you get something so fundamentally wrong if you have done these sort of jobs before?)
I crawled the internetz and could only find one drawing showing similar connection, 4 below:
Am I over reacting?