Discussion

This discussion is not meant to decrease the value of the corrugated steel sheath which is in its design and manufacturing means a beautiful sample of excellent cable engineering. But this discussion is meant to give a fair opportunity for making a comparison with aluminum sheathing in its latest stage of development, this kind of sheathing being the hope of so many cable producers who have invested much in it. It tries to show that the very thin walled aluminum sheathing in particular has a great number of advantages among which we may once again emphasize, is the unique combination of exceedingly low weight and small over-all diameter which gives to it a real economical superiority. The discusser wishes to express his gratitude to the technical management of the Osnabrucker Kupfer-und Drahtwerk, Osnabruck, Germany, for kind permission to publish these data and Fig. 23.