A'Kozlowski, Rzeszw University of Technology, Poland

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A.Kozlowski, Rzeszów University of Technology,
Poland
Ideas of application of LCCA in optimisation of
building structures
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A.Kozlowski, Rzeszów University of Technology,
Poland
Till now in Poland, efficiency of construction
solution, especially structural system, is
evaluated on the basis of material (steel,
concrete,) consumption only. Comparison and
cost analysis between few structural systems
(alternatives) is made taking into consideration
design, current cost of structures. So,
optimisation of structural systems is focused on
the material consumption. In steel structures
economy solution can be obtained by application
of semi-rigid design philosophy, and new
technology, like steel-concrete composite
structures.
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A.Kozlowski, Rzeszów University of Technology,
Poland
COMPARISON OF THE MOMENT RESISTANCE AND STIFFNESS
OF THE STEEL AND COMPOSITE BEAMS
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(No Transcript)
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A.Kozlowski, Rzeszów University of Technology,
Poland

• Steel structures are not so often used, because
  of higher cost of steel elements and cost of fire
  protection comparing to concrete structures.
• But.., when life-cycle approach from "cradle to
  grave" is applied, steel structures show to be
  much competitive. LCA should take into account
  ecological, economic and socio-cultural aspects.
• From economic point of view, the most appropriate
  method is life-cycle cost analysis, where all
  relevant costs are discounted to their present
  value. The following costs should be considered
• design costs,
• construction costs, including costs of raw
  materials, treatment, transport, assembly,
• operation costs, including inspection,
  maintenance, heating, ..
• - cost of demolition and disposal.