I am a newcomer to this forum, so if this post has been covered before, my excuses. But it is impossible to cover everything to find out. Michlet...
permeability Ane Any tank should consider usual permeability, as when you calculate liquid capacity, let´s say 98.5%. That is valid for intact...
Riccardo The bollard pull test is done with one line connected to a bollard in one end, and to a tension measuring device with enough capacity...