Pyrpolizer wrote:The Alakopru Dam in Mersin is at Google earth coordinates 36.181403, 32.895708 .
Height above sea level about 70m.
The conclusion out of this is that the "free shipping via gravity" is impossible...
what has that got to do with a price of tea. thats not where the water is coming from. the dam is being built as we speak. if they have sense they will build it high enough not only to flow unaided but give us electricity too.
as to the pressures involved, at any one point the outside pressure is the same as inside. net result is zero. you can use plastic for it.