In reply to the thread:
From the report:
"There is concern that there is a project wide problem with the beams"
Now here's the Scottish Parliament Public Audit Committee back in December 2009 reviewing the railway:
"George Foulkes: Where was the major cost overrun?
Keith Bryers: The major difficulty probably related to the replacement of the proposed steel beams on the rail track with concrete beams. Morrisons made that proposal with its tender. Construction of the tunnel was another challenging engineering issue, given the weather conditions, the altitude and the various environmental considerations.
George Foulkes: Morrisons proposed changes to both those aspects of the original tender specification.
Keith Bryers: That is correct.
George Foulkes: Having won the contracts out of 14 companies in one case and four companies in the other, Morrisons persuaded you to change the specification.
Sandy Brady: That was done as part of a cost-saving exercise."
http://www.parliament.scot/parliamentarybusiness/report.aspx?r=2958&mod... page 1342