RSJ Calculation for Load-Bearing Wall Removal

I need structural calculations and RSJ (Rolled Steel Joist) specifications for removing a load-bearing brick wall spanning 3 to 5 meters. For building regulations submission, 2 x walls to be removed.... (Budget: £250 - £750 GBP, Jobs: AutoCAD, Building Architecture, Building Design, Building Inspection, Building Regulations, Civil Engineering, Construction Management, Project Management, Structural Engineering, Technical Documentation)