The calculation is done by the finite element method. As a result of calculation, in addition to the report, you will receive beautiful videos animations of the design work in dynamics.
SNiP Loads and Effects
Calculation of real construction is required to determine the reliability, stability and response to external factors. Thus, you receive calculations from various sources, which confirm the actual behavior of the structure. Calculations of real structures allow to prevent emergency situations, prepare structures for reconstruction and modernization, analyze the causes of destruction or pre-failure behavior of structures.
To estimate the cost of design calculation, send to our e-mail This email address is being protected from spambots. Human, animal housing and construction of equipment, public buildings and industrial flooring, bridge and crane from different loads and snow loads up to the effects of climate temperature effect is defined. Product with appropriate stability factor into the calculated load limit on the value of the standard should be accepted as the calculated load values. To load factors used in calculating the values specified in the relevant regulations bearing capacity and stability.
The limit states account equal to 1, if the deformation is being used for calculating other values in the structure and the basic norms Designing is considered equal to 1. In case of other types of border-state calculation of structures and basic norms Designing static information is available according to the load values calculated in advance by the possibility of exceeding the available posts.
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Fire, explosion and impact of such cases, strength and balance should be heard in the calculation load factor for all loads must be taken into account is equal to 1 to accept. Wind speed is determined by statistical processing of long-term observations. Wind pressure is height dependent. The higher the building and the more open the terrain, the greater the wind pressure. The following types of terrain are distinguished:.
As a spare device at weather stations there are sets of weathervanes G. Wild with light and heavy planks.
Up until the early 70s of the twentieth century, only weather vane observations were conducted. At the same time, the average wind speed, the maximum speed gust during the observation period, and the wind direction were determined. In this way, receive averaged over a 2-minute interval of wind speed which is used to normalize wind pressure.
Environmental Load Maps of Russia
At the same time, the largest deviation of the board for the specified period is noted - the gust speed. The wind load on buildings and structures is defined in the norms of SNiP 2. When designing massive and low buildings and structures, the dynamic effect of wind load is neglected. More significantly, its impact on tall and flexible structures.
In the construction of towers, masts, etc. At high natural frequencies, the structure does not have to fear resonance effects. When the frequency of natural oscillations is less than 4 Hz, high structures, buildings with a height of more than 40 m, etc.
Wind velocity. Regulatory and design wind pressure values
In addition, for flexible high cylindrical structures masts, towers, chimneys, etc. Air density depends on pressure and temperature. For the usual temperature range and with a not very high building height, the variability of air density can be neglected. Then the formula 2.
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If the wind speed at the meteorological station was measured by a weather vane G. The standard height of the wind speed measurement is 10 m. When the measuring device is located at a different height, which is present at a number of meteorological stations in the Krasnodar Territory, the measured speed is adjusted in accordance with the expression:.
When switching to anemometric observations, the averaging interval increased to 10 minutes, which in general should reduce the averaged wind speed compared to 2-minute averaging.