Empirical observation from everyday experience in the field of personal life, and eventually of social practice was the basis of hygienic knowledge already in ancient times. Based on the instinctive desire of people to preserve life and health, these observations gradually expanded. Depending on the climatic conditions in which people lived, from the habits and social organization of society, hygiene measures, covering a wider field of life improved, although there are no theoretical foundations for their improvement did not exist: the practice is considerably ahead of theory, as is often the case in other areas of human knowledge.
The simplest hygienic rules, some of which have survived until now, were known to many ancient peoples 3000-4000 years BC. In ancient Chinese medical books were discovered hygienic rules and tips regarding proper diet, mode of work, rest and sleep, and beneficial effects of natural factors on human health. Continue reading
In Egypt destroyed the world’s oldest pyramid of Djoser at Saqqara. The Committee for tourism and antiquities of the Union of revolutionary youth of Egypt intends to apply to UNESCO with a request for help, and willing to submit to the Prosecutor General of the country report on the violations and corruption committed during the restoration of the step pyramid. As ITAR-TASS, the reason for concern was what happened a few weeks ago an incident in one of the interior chambers of the pyramid collapsed stones.
In Egypt destroyed the world’s oldest pyramid of Djoser at Saqqara. The Committee for tourism and antiquities of the Union of revolutionary youth of Egypt intends to apply to UNESCO with a request for help, and willing to submit to the Prosecutor General of the country report on the violations and corruption committed during the restoration of the step pyramid. Continue reading
The basis for determining a constructive solution of large-panel residential building is its structural diagram.
In practice, the design and construction of large-panel buildings used a significant amount of different design schemes, because of the large variety of space-planning decisions, different levels of development of building materials industry and production of precast products, security of construction sites lifting and transport equipment. The importance in the choice of structural schemes is their techno-economic evaluation. Depending on the constructive scheme of the building materials are defined and the nomenclature of assemblies, depend on it the methods of construction of buildings and technical-economic indicators of large-panel construction.
On the constructive scheme of the large buildings, divided into the frame, and frameless buildings with an incomplete skeleton.
Prefab large-panel houses main structure has a frame consisting of columns and beams. The columns of frame are available both at external, n internal walls; girders can be placed transversely or along the building. Continue reading