Loft Conversion - Steel yourself for this nonsense

Here are the steels which the structural engineer has insisted is the only way to support the additional en-suite bedroom in the loft space.  These are required in addition to the 'quadrupled' up 9"x2" joists and the flitch beam.

and here's a close up of the 6.8metre long x 254mm x 146mm x 43Kg universal beams which i need to crane into my loft to hang the 9"x2" C24 joists from.  They have a spliced joint at 2/3rd section and when bolted together each of these beams will weigh 300kg (47 stone).  In my opinion this is complete overkill and could have been avoided by the use of alternative glue-lam beams or other modern, timber composite alternatives to steel. So, here we are already £4k over budget.

This is the flitch beam which I had to construct to satisfy yet another requirement of the structural engineer.  The flitch beam comprises of a 6m long x 200mm high x 13mm thick steel plate sandwiched between two 220mm x 50mm C24 structural beams the same length. The flitch beam will sit at a 90 degree angle to the steel beam around the edge of the stairwell opening and will be suspended from the steel beam by anchor ties.

The assembly is held together by 130mm grade 8.8 x M12 bolts placed at 200mm staggered centres with single sided toothed connecters either side of the steel plate which bite into the timber.  I estimate that this weighs approximately 120Kg (19 stone) and because of the length and weight this will need to be craned straight into the loft along with the steel.

Structural engineer - bolt!