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by Tam

3. Requirements for the design bases, foundations and underground parts of tall buildings 3.1. For tall buildings, characterized by large and uneven loads on the foundation and base, should provide Use the following foundations: slab foundations increased rigidity (including box-shaped with well-developed underground parts of buildings) in a natural or fortified the base, pile foundations (Preferably in the form of deep supports); combined, including pile-slab and plate-anchor foundations. 3.2. Source: Pete Cashmore. When designing high-rise buildings is preferable to use options for layout and architectural and planning solutions that provide favorable interaction with the base of the building, including: a device underground floors that improve the rigidity of fixing the building at the base and change in the favorable attitude of the stress-strain state of soil at the base, resulting in a decrease in sediment and also rolls facilities. Decision on the use of underground space should be take in view of geotechnical factors on the basis of techno-economic analysis device around the altitude of the building above ground stylobate buildings or buildings with a variable number of storeys, which increases structures in general, the device of dividing walls, dug into malodeformiruemye base layers to minimize the impact of the construction of high rise buildings on the surrounding buildings, the unit bearing walls and diaphragms stiffness of the underground floors, use of architectural and planning schemes that do not cause significant constructive load eccentricity and irregularity of the sediment. 3.3. Design selection basement on the basis of technical and economic comparison of options under 'Project' and is determined by design-planning scheme of the building, the nature of soil strata, their physical and mechanical characteristics, load of the building at the base, the interaction of a building under construction with an array of ground and with the surrounding development, organization and technology features of the building.

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December 14th


The Limits
by Tam

The terms of reference for engineering and geological surveys, compiled in accordance with the requirements of snip 2.11, you must specify the design characteristics of the object, its geotechnical category (in accordance with Section 1.4 category 3), as well as lead, on the one hand, the characterization of the expected impacts of the construction on the environment, indicating the limits of these impacts in space and time, and on the other side – effects of the environment at the facility in accordance with the requirements of snip 1.22. Terms of Reference, approved by the customer, shall be prepared organization, projecting base, foundations and underground parts of the building and agree on the organization, performing engineering surveys. 2.6. The program of geotechnical surveys should be compiled with the participation of specialized organizations geotechnics.

This should take into account the geotechnical features of high-rise buildings, as set out in Appendix A. The program of geotechnical research on the construction site should include penetration following wells: exploration with the distance between them is not more than 50 m and at least two on opposite corners of the selected site; geotechnical in an amount not less than five: at the corners and center of the dimensions of height of the building in terms of the distance between them is not greater than 20 m. The number of exploration and geotechnical boreholes, the distance between them is within the height of the buildings, and within the rest area building assigned according to knowledge and the complexity of the geological site conditions, taking into account the size and purpose of the building.

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December 1st


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