Evidence of the use of natural stone inconstruction for a long time set. This material has a number of unique advantages. Its main disadvantage is the high cost and laboriousness of processing. The stone was replaced by a brick, but it is stacked by hand, which is long and expensive. Accelerating the construction contributed to the concrete and reinforced concrete structures. SNiP regulates their use on sites.
There are different ways of making anduse of these large-sized elements. Famous Khrushchev - the brightest example of the application of panel construction technology. With all its shortcomings, it ensured a high rate of erection of objects. Improvement of technology allowed to modernize the technology, in parallel, and changed the guidance documents.
The development of new building standards involvedprofile institute and the relevant ministry. SNiP 2030184 "Concrete and Reinforced Concrete Structures" aims to unify the design techniques for these elements, as well as the technology for their production and use. The document fixes the requirements for structures, in the production of which the medium-density silicate concrete is used.
According to this document, conditions are definedexternal environment, in which the use of load-bearing or enclosing structures made of reinforced concrete is permissible. The temperature range is very wide and is set in the range from -70 ° C to +50 ° C, which corresponds to almost any climatic zone. Use concrete and reinforced concrete structures SNiP allows at a relative humidity of 75%.
Modern technologies provide for dressingproducts both in the conditions of specialized production enterprises (JBC), and directly on the site. This method was called monolithic construction. With the combined technique, finished products, concrete and reinforced concrete structures are connected. SNiP clearly regulates all ways of combining elements among themselves.
Excellent performanceMonolithic structures have increased the interest to them from customers and construction companies. Recently, this technology has been improved: casting of external walls is made in a permanent formwork. It is made of extruded high-density polystyrene foam. After the construction is completed, it plays the role of a heat-insulating layer.
Quality of reinforced concrete products depends on the firstturn from the original components and the exact execution of the technological process. The manual for SNiP "Concrete and Reinforced Concrete Structures" is a guide to the action of engineers and technical personnel. Strict adherence to the spirit and letter of the normative documentation guarantees the conditionality of the products.
In our country there are clearly traced trendsgrowth in the construction of a wide variety of facilities. Concrete and reinforced concrete structures are widely used in them. SNiP allows such a state of affairs provided that qualitative raw materials are used and the process is accurately followed.
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