Roman type Aqueduct（Italy and others）
By Takashi
This page which is based on the information from 'THE UNIVERSE(THE SKY)=SORA' is made by HONO who is one of the fellows of THE UNIVERSE(THE SKY)=SORA.
Roman type Aqueduct（Italy and others）
http://sora.ishikami.jp/image_dir/index.php?id=20060105102818
http://sora.ishikami.jp/image_dir/images/2006/20060105102818.jpg
Roman Aqueduct, they say, extends 350 km in total and there are as many as eleven ones which reach as far as Turkey and Israel.
The height difference is worn in order to flow the water and the precision of it is only 1 mm for three m.
The angle of inclination is 0.03 percent.
Do humans make such things to get water?
As you can see the image of giant aqueduct, this one was made only to get water from the far away mountain and this one doesn't extend any more and stops here.
They say the concrete was developed in the time of Nero but if we don't suppose so, it may be impossible to imagine such a giant aqueduct were made without using concrete.
Some of the aqueducts extend from the cliff to other cliffs and these ones are thought to have been made water flow by the principle of siphon but the inside of the blocks must have been made evacuate to make water flow by the principle of siphon.
http://sora.ishikami.jp/image_dir/index.php?id=20060507064117
http://sora.ishikami.jp/image_dir/images/2006/20060507064117.jpg
http://sora.ishikami.jp/image_dir/index.php?id=20140313231928
http://sora.ishikami.jp/image_dir/images/2014/20140313231928.jpg
The old aqueduct whose length was 16 km was made BC 312 and the estimation capability of making the water flow was 75000 t / a day.
Thereafter the aqueduct whose water supply capability was 190000 t / a day was made and there were 8 water systems about the middle of AD 1 and the amount of water supply per capita became more of the one in today's Rome.
The material for the aqueduct was just like the waterproof cement and the grade is from 1/5000 to 1/200.
What was more, there was the part whose grade was 1/14000 as long as 10 km.
Pont du Gard is as high as 49 m.
According to the documents which were investigated by researchers the tunnel construction of sixty meters in Sernhac was completed by six groups in two months.
I wonder if it was possible to complete it only by human power.
http://slicer93.mbsrv.net/88-1008.html