Raghav,

For a hilside nozzle the re-pad is an elliptical shape, with major and minor diameters. But, when you enter that in PVElite, you have to specify the minor diameter.

PVElite also assumes that pad width is same around the nozzle. So, once it knows the minor diameter, it can compute the major diameter. The major diameter of the re-pad is used to find the available area in the hillside direction. This is probably the value 1248.196 mm

I hope this clears it up. Let us know if you have further questions or any suggestions.