PugJesus@lemmy.worldM to Illustrations of history@lemmy.worldEnglish · 3 days agoSimple cutaway of a Roman aqueductlemmy.worldimagemessage-square2fedilinkarrow-up166arrow-down11
arrow-up165arrow-down1imageSimple cutaway of a Roman aqueductlemmy.worldPugJesus@lemmy.worldM to Illustrations of history@lemmy.worldEnglish · 3 days agomessage-square2fedilink
minus-squareSaveMotherEarthEDF@lemmy.worldlinkfedilinkEnglisharrow-up4·3 days agoI am wondering why it has to be above ground. Underground or even at ground level would be cheaper, no?
minus-squarePugJesus@lemmy.worldOPMlinkfedilinkEnglisharrow-up10arrow-down1·3 days agoKeeping the gradient steady so the water flows all the way to the destination.
I am wondering why it has to be above ground. Underground or even at ground level would be cheaper, no?
Keeping the gradient steady so the water flows all the way to the destination.