SPECIFICS OF DESIGN ACCORDING TO DSTU 9294:2024 “CALCULATION OF BUILDINGS FOR RESISTANCE TO PROGRESSIVE (DISPROPORTIONATE) COLLAPSE)”

Abstract

Due to the global (disproportionate with a
primary cause) collapse of structures with increased
responsibility for the consequences, as a result of
which people died or significant material values
were lost, raised the question of developing new
approaches to the design of structures with increased
responsibility for the consequences. As practice has
shown, the disproportionate (progressive) collapse of
a structure can be caused by a number of factors or
their combination, such as design and construction
errors, explosions, fires, impact from vehicles,
etc. In the early 2000s, intensive research began
worldwide, including in our country, to minimize the
likelihood of progressive collapse. The first national
regulatory document outlining the basic principles
for preventing progressive collapse during the design
of high-rise buildings was DBN V.2.2-24:2009. In
2021, DBN B 1-2-6 came into effect, which in clause
3.2 clearly articulated the requirement to prevent
damage disproportionate in scale to the original
cause for buildings and structures, not just highrise
buildings. Therefore, there was an urgent need
to develop a specialized regulatory document to
prevent the occurrence of progressive collapse of
buildings and structures.
The article discusses the main principles and
measures to prevent the progressive collapse of
construction objects at the design stage according
to the newly developed national standard
DSTU 9294:2024 "Calculation of Buildings for
Resistance to Progressive (Disproportionate)
Collapse." This standard was developed by NIISK
and commissioned by the State Enterprise “Ukrainian
Scientific Research and Training Center for
Standardization, Certification and Quality Problems”
(SE "UkrNDNC").
DSTU 9294:2024 establishes the main provisions
for designing public and residential buildings of
consequence classes CC-3 and CC-2 with various
structural systems and their protection against
progressive (disproportionate) collapse. The standard
does not apply to buildings classified as cultural
heritage (historical and cultural monuments) or to
buildings for which other national building codes
establish protection requirements against progressive
(disproportionate) collapse.