hi every body..

when we are modeling the nozzles with the wrc model of the caesar II,when we have the horizontal vessels,the first distance of the nozzle to the stiffener is the distance between the nozzle to the vessel head and it is clear.
but what about the next distance to the other stiffener(if we do not have any)?
shall we go to the center of the vessel or to the nearest saddle?
what effect does it have really??
I will be thankful if anyone can answer?

kind regards