Radio  and  Television  Tower  in  Vilnius.  Part  4
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Protect the surface of the concrete floor
To protect the concrete floor, which is operated in the normal mode, or is subject to wear in areas with high traffic, there are several ways to protect the surface.
   Comparable ways: their cost, appearance and ability to perform the task to protect.
   In this article, we consider three ways to finish and protect the floor. Each of them has its advantages and disadvantages.
   Thin fil...

Finishing compositions based on water glass. Part 3
When used as part of exhaustion moderator comes coagulation and solidification of liquid glass. However, due to the presence in the composition of Portland cement with a finishing time is an increase strength of the coating due to hydration of cement minerals. Thus from colloids formed during the coagulation liquid glass are actively assigned to the water for hydration of cement, a porous media formed tumors filled Portland cement, which leads to...

Finishing compositions based on water glass. Part 2
Studies in Berlin Institute Federal institute for Materials Research and Testing, show that the average density of 1730 kg/m3 brick large proportion of pores having a size in excess of 1 micron is more than 90% [3] and they are responsible for the increased migration of fluids through brickwork.
   Most fully meet these requirements structure obtained by coagulation and water-soluble potassium silicate forming silica with a high sp...

Modernization and repair of self-propelled machines. (3)
Hardening electrolysis BORATING hinge pins and bushings mates working equipment hydraulic excavators EO-4121 (EA-4321) gives an increase in wear resistance 4-6 times compared to the bulk quenching details.
   Taking into account the high wear resistance of brazed blades, hardened sintered alloys (see Table 1), are recommended for carbide knives dumps graders DZ-122 and RS-98, combined machine E-405 based on KAMAZ, for front dumps a t...

Specialized exhibition Architecture. Construction (END)
Mari-lime brick and gas silicate blocks
   JSC "MZSK" produces silicate brick and a half, color (white, yellow, black, red, blue, green, brown).
   For the production of silica brick used quartz sand from quarries near the plant. Limestone enters the factory with Dobryatinskogo deposit Vladimir region. Silicate brick (Table 1) is used for masonry exterior and interior walls of buildings and structures, as well as ...

Geophysical processes primers and security. Part 5
In the center of Moscow can distinguish vertical structure comprising a crashing into the Earth`s crust magma elongated cylinder (Fig. 2) [5]. In the center section marked lack of extensive vertical zone converted waves ("blind spot"), going from the depths of 70-80 km to 7.5 km. Such "blind spots" are characteristic of the earth`s crust with the introduction of monolithic dense mantle rocks such as gabbro, diabase, etc. In such a zone Tashkent e...

Finishing compositions based on water glass. Part 1
The quality of the decoration of buildings for new construction and reconstruction depend not only on their aesthetic, but also the operational parameters, as good-quality finish - a guarantee of durable service basic designs, long maintenance-free operation, the costs for maintenance and care. Traditional binders used for the production of finishing compositions, liquid glass is widely used, but it has some drawback: coatings based on it gaining...

On possible amendments to the equation Griffiths
Griffith presented a picture of destruction allowed to formulate the problem of determining conditions of the beginning of crack propagation and find its general solution.
   As seen from the above schemes, in the process of crack propagation material directly adjacent to it "coasts" unloaded relaxes. This means that the stress and strain it decreases, and the elastic energy stored earlier in this area of ​​the body is re...

Construction skyscrapers - the requirements of modernity. Part 4
The program is a high-rise building in Moscow
   The project is now a high-rise building in Moscow is implemented in two main areas: the construction of business center "Moscow City" and implementation of the program of the Government of Moscow "New Ring of Russia."
   1. Moscow international business center "Moscow - City"
   The project includes the construction of buildings on the territory of abou...

Degree project - beginning of the road. (3)
Given the great diversity of subject matter and content of diplomas in various specialties, the jury is faced with great difficulties in determining the winners - "Who better violinist or a dancer?". Nevertheless, often based on emotional perception and can estimate the relevance and novelty, and the author`s contribution to the thesis project or job. Absolute winners in recent years have been graduates of Rostov CSO GASU St. Petersburg, Nizhny N...


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 Radio  and  Television  Tower  in  Vilnius.  Part  4

During the operation of the TV tower for monitoring verticality reinforced concrete trunk and its variations during strong winds, were organized thorough geodetic observations that result established that at the height of 20 m + strain missing (equal to + - 0.00). At the top they make up to 114 mm, and the steel part of the antenna deviates from the vertical axis of 322 mm, which is permissible under the building regulations.
   The entire outer surface of the reinforced concrete barrel studied in detail using suspended winches. Moving up and down around the perimeter of the trunk, experts revealed defects formed and included in a special logbook for subsequent analysis results.
   Reinforced concrete on the trunk between the marks + 165 + m and 182.15 m posted 4-storey high-rise rigging resting on a strong supporting structure in the form of spatial bowl. The design of the cup consists of 16 individual elements weighing 25 tons. They rose in the design position with the help of powerful and pulleys connected to a single-dimensional structure. Maximum outer diameter is 31.2 meters rigging, but below it looks quite elegant.
   Survey area closed ring around the perimeter fencing and stained glassed windows layered, which creates favorable conditions for visitors.
   At a height of 181.25 meters installed horn-parabolic antenna radio relay lines and other communications equipment.
   Reinforced concrete barrel over the TV tower rises antenna construction steel cylindrical shape with an outer diameter of 2.6 m below stepwise decreasing to 85 cm diameter at the top. The top point of TV tower reaches a height of 326 m Installation of antenna elements produced by traditional methods using ring cranes.
   On the outer side of the cylindrical surface of the antenna structure in the radio and television set several floors betraying dipoles TV channels. Here at the office balcony along the entire height and warning lights placed aerozaschitnye to prevent flying near the aircraft.
   Meeting in 2000, on the TV tower in Vilnius over the entire height was mounted illumination color colored lights resembling a colorful Christmas tree. She looked very impressive from all points of the city.
   The total estimated cost of building structures in 1980 was estimated at 2 657.2 thousand rubles.