Reims Cathedral
Reims Cathedral (FR. Notre-Dame de Reims) is one of the most famous Gothic cathedrals in France. For many centuries it was the place of coronation of most French monarchs. It…

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Mysterious underground tunnels
Mysterious underground tunnels are found on all continents. Experts are convinced that this is a very ancient constructions. But it is still unknown who built and for what purpose. Moves…

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Churches and Temples of Ancient Prague

The St. Vitus Cathedral. The dominant feature of Prague Castle is undoubtedly the Cathedral of St. Vitus.

Were held in the Cathedral of the coronation of Bohemian kings, some of them are buried here, so that the Cathedral for the residents of Prague – a place sacred. In the Cathedral you can enter through the bronze doors of the Western façade. On the doors depict scenes from the history of the construction of the temple, as well as episodes of legends about Vaclav and Vojtech.

The Cathedral Of St. Mikuláš.

Created by two prominent Prague architects Christoph and Kilian Ignaz Dienzenhofer. Father, Christoph, was built in the early eighteenth century, the nave and Western facade, and the son 40 years later – the choir and the dome. Completed the construction of the creation of the bell tower (1755) Anselmo Lurago. Especially impressive are the dimensions of the Continue reading

Pyramid lake Rock

There is no doubt that the Egyptian pyramids is the most famous. But they are not the most ancient structures of pyramidal form. In the U.S. state of Wisconsin there is a pyramid, whose age, presumably, 12 thousand years. It turns out that it was built during the last ice age. And made it a very highly advanced civilization…

Rock lake is located 20 miles East of Madison (Wisconsin). Its length is eight and the width is about four kilometers. In 1836, American Explorer Nathaniel, hair accidentally discovered in the lake a small stone pyramid with a flat top. He called his discovery Atzalyno and suggested that the discovery not less than a thousand years.

His discovery of Heyer not attach particular importance on the American continent many of the pyramids, “the cult of the hills” and burial mounds. But in 1862, the press began to be published, which said that the pyramid lake Rock is one of the most ancient pyramids.

It was argued that the pyramid is on the bottom of the lake which was formed many years ago, and, therefore, the construction should be over all Indian tribes. Continue reading

The soil pressure on underground structures

Prior to production and to the construction of underground structures soil in an unlimited array is in a state of natural or geostatic equilibrium under the action of its own weight. In this case, the depth Z in the soil (Fig. 1), the following compressive stresses (pressure):

vertical

horizontal

where is the average bulk weight of overlying soils; – the coefficient of lateral earth pressure under conditions of natural occurrence.

The open or underground excavation changes the equilibrium conditions of the soil and leads to the emergence of deformation and redistribution of stresses.

Earth pressure on underground structures is different than the pressure in the intact rock mass at the same depth, as: Continue reading

Waterproofing of underground structures with the use of gel injection
Almost any designer, engineer or owner of a historic building faced with problems related to constant dampness of external walls of underground structures. For long-term use of injectable materials specialists…

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The most mysterious manuscript in the world.
A breakthrough in the attempt to decipher a mysterious 600-year-old Voynich manuscript, written in an unknown language. The Voynich manuscript, considered to be the most mysterious document in the world,…

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