would it not be possible to use hydraulic concrete injection to raise the city of Venice?
962469
First time we ve heard of that!!!\nMaybe suitable for unstable lot (both ways)
1107196
No  it could damage there develpment.
662022
No, most of it is chemically incorporated into the crystalline structure the cement forms.  Of course, some does evaporate, but this is undesirable.  This is why concrete is often covered until it cures.
360345
The water supply was at a higher elevation than the fountain, which created pressure. It's the same principle as community water towers of today.
188175
it is possible but it would take an extreme amount of pressure and you might not be able to manually pump it full enough, you would have to use an electric pump and make sure the air needle can't pop out.
81235
If it's just a school project, you might try pumping it or simply use a bucket. It depends on how large your model and pocket are.\nIn actual aqueducts, the water is already at a higher level (like a mountain spring or lake) so I think it would be fair to replicate that situation.
139357
Hydraulic technology relies on the fact that liquid, unlike gases and solids, cannot be compressed. Put some water in a bucket and try to push it down. Right—it can't be done. The water is displaced. Imagine an apparatus made of three components: a reservoir divided into two sections (one small, one large) with a passage between the two sections. In each section is a piston. If you fill the reservoir with fluid and then apply pressure to the small piston (called a master cylinder), the large piston will rise.
130337
Yes, check with the bldg dept @ your city
38024
go to howstuffworks.com search for hydralics they've got a great article on them
460940
If you are referring to the Gaillard Cut widening, a project that began in 1992 and was completed in 2001, there were a number of contractors hired by the Panama Canal Commission and later on, by the Panama Canal Authority, to do all kinds of works, dredging, land removal, explosions, and so on.  Among those companies there was CUSA, a Panamanian company.  However, most of the work was carried out in house, including supervision of contractors.\n\nIf you are referring to Canal expansion with a new set of locks, there are no contractors considered yet, as the decision to go ahead with the project has not been made and requires of a national referendum for its approval.
553992
here is something:\nwww.mmsconferencing.com/nanoc/\npdf/finalcircular.pdf\nand here is something else:\nNano-concrete is an example of a non-exotic material made better through nanotechnology and coming to market.  The ability to see and analyze material at the nano-scale means that concrete can now be  manufactured in such a way as to enable 3-inch thick highway bridge decks.  There are 150,000 obsolete bridges in the U.S. alone.  Nano-concrete can enable them to be rebuilt more cheaply and faster, and to be stronger and longer lasting.  The key impediment will be standard aversion to new ideas in the construction industry.\nanyway, google it for more info
420532
It depends on the place where the ground is located.It is a very expensive process.Qualtiy turfs require underground drainage facilities and levelling.
42371
No way! They didn't get it right the first times.\nThe older ones have crumbling sides so the next Fink told his engineers to make the angles less steep.\n\nYou can see the evidence if you peruse photos of the areas. In fact, one of those monuments has an abrupt change of angle midway in construction
165407
yep, it makes sence.\n1)  Katrina was a fluke.  It is something that engineers expect to see once every 100-200 years.  No reason to waste time & resources planning for such a rare occasion.  It would cost more to plan for that event than to rebuild.\n2)  New Orleans is a very important port city because of its access to the Mississippi river.  Lots of shipping to midwestern states.\n3)  There is too much pride in our government to ignore one of our own cities when billions of our tax money goes to helping other countries deal with similar tragedies.\n4)  There is a lot of money to be made in the new New Orleans.  This is a chance to adjust zoning laws to attract new businesses.\n5)  The failure to respond exposed massive city corruption that will be corrected so that the city will have a second chance to prosper instead of being dragged down by red tape.  This will also attract more businesses to the city.\n\nIf America was to abandon every city that was struck by tragedy these cities would not exist today:\nWashington, D.C. - War of 1812\nSan Francisco - Earthquake\nChicago - Fire\nAtlanta - Civil War
468355
If people pave their whole back yards, water has no where to drain off to.  It wouldn't be able to be absorbed into the grass.  Also, I think the sun reflecting off the concrete is heating up our cities a degree or two.
770368
the most common and most important hydraulic cement in modern construction is Portland cement, it is a combination of calcium, aluminum, silicon and iron oxides in specific combinations, made from a raw material mix of limestone, chalk, and clay, or their natural blend, lime marl. The iron oxide is either contained in the clay minerals in the form of ferrous hydroxide, or it is added in the form of iron ore.\n\nTraditional stucco is made of lime, sand, and water. Modern stucco is made of Portland cement and water. Lime is often added to increase the permeability and workability of modern stucco.\n\nThere are different types of cement with different components you can read about this in http://en.wikipedia.org/wiki/Cement ..\n\nGood Luck
377090
Didn't they have irrigation?  Not sure about other technology they might have had ...