Thanks for the replies all.
@Don56 Yes the radius is changing but this is when viewed side on. The rolling radius should be perpendicular to the sloping side; if that makes sense. If you Google images the rolling of a cone you will see that the cone is rolled at an inclined plain and inclined...
I have a fabrication problem on site that I am at total loss with, can anyone help?
We have a cone top economiser that we have to cut a hole into to allow a welder in to plug a tube. The shutdown team have bought a new plate section and have asked the design office to provide a rolling radius...