I've just been doing some routine googling, and came across this. It's from the company who did the special work for some of the supports on The Big one, such as over the south entrance to BPPB and the big turnaround. This is about the geekiest thing I have ever posted.
http://www.graitec.co.uk/Downloads/Pepsi%20Max%20Rollercoaster.pdf
http://www.graitec.co.uk/Downloads/Pepsi%20Max%20Rollercoaster.pdf