It is marked, that in an operative range of cross forces of one of forms of destruction of ferro-concrete beams at a cross bend repeatedly repeating loading is the weariness of anchoring of longitudinal armature. Are shown as work of anchoring of armature and the reason of her infringement because of fatiguess of coupling is modelled. It is offered to define durability of anchoring of armature as function from length of fatigue cracks of splitting under ledges profiled armatures.

Due to the fact that earthquakes with up to 7-point intensities are predicted for Kazan territory, the football stadium base soils were assessed for resistance to vibroliquefaction.
The construction site base is formed with water-saturated sands to the depth up to 12 m. The site seismic microzoning results show that seismic activity of the site is assessed as 7.0 points by MSK 64 scale with acceleration 143 sm2/s at short and mean wave periods.
Basing on the analysis of design documentation, the construction site near-surface geological and geotechnical conditions, the results of dynamic laboratory tests of soils under scenario earthquakes for the site considered, the assessment of vibroliquefied water-saturated sandy base soils was conducted.