The problem of safety in the construction of buildings and structures has always been and remains very relevant. In our time of actively developing scientific and technological progress, new risk factors of a technogenic nature appear. Studying the survivability of buildings, and consequently the resistance of buildings to progressive collapses, is a very important task. This article examines the influence of the compliance of nodal connections of a metal frame on progressive collapse.

Keywords: progressive collapse, yielding of nodes, metal structures, survivability, special effects, calculation methods

The article deals with the problem of improving the structural safety of cable-stayed structures . The mechanisms for regulating the risk of accidents of an object at the stages of its construction and operation are presented. The procedure for certifying the requirements of the standard is described. The stages of protection of cable-stayed structures from corrosion are given and the optimal position for increasing the corrosion resistance of ropes and fasteners is presented. Recommendations are given on the possibilities of increasing the operational durability.

Keywords: structural safety, cable- stayed structures , corrosion, rope, anchors, operation, accident, risk, durability