I keep on getting this message " there was no uplift please choose an appropriate bolt size" in my support lug results page.This also seems to stop a bolt area from being calculated.
All the input echo for the support lug and bolt size seems ok.
Any suggestions please.

I guess that the message means that the overturning moment (wind, seismic and maybe external fores/ moments on nozzles ) is less than the moment resisting to uplift (due to weight), in the end of calculation there is no leg/no bolt in tension.

Maybe in future development will be worth to consider the effect of Vleg as shear force and the bending moment ("Bending at the Bottom of the Leg" based on Vleg) as loading the plate and bolt.

Thanks for the reply.
If thats the case i wonder why pv elite still asks for an appropriate bolt
size to be chosen.?
very confusing