Power resistance of the ferroconcrete monolithic flat plates of floorings at punching by rectangular columns

In work influence of cross section form of a column in ferroconcrete beamless framework on nature of flat monolithic plate deformation in the field of calculated at punching is considered. On the basis of experimental data analysis the hypothesis of flat plate deformation nature in the area, adjacent to column, is developed, and method of determination the size of calculated contour depending on a form of column cross section is offered. It is shown that the offered method allows to increase the constructive reliability and safety at design of monolithic beamless frameworks of buildings and constructions.