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LIGHTWEIGHT STRUCTURES in CIVIL ENGINEERING
Warsaw-Częstochowa, 3 December, 2004
DESIGN PROBLEMS
OF COLD FORMED
LIGHTWEIGHT ARK
STRUCTURES
dr inż. Ryszard Walentyński
Faculty of Civil Engineering
Silesian University of Technology
Gliwice, Poland
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
INTRODUCTION
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
INTRODUCTION
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
TECHNOLOGY
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
TECHNOLOGY
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
TECHNOLOGY
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
TECHNOLOGY
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
TECHNOLOGY
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
BARRACKS
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ROOFS
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ROOFS
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ROOFS
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
INSULATION
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ADVANTAGES
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ADVANTAGES
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ADVANTAGES
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ADVANTAGES
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ADVANTAGES
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ADVANTAGES
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ADVANTAGES
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
DISADVANTAGES
•Durability
•Fragility
•Thermal insulation
•Fire resistance
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
DISADVANTAGES
•Durability
•Fragility
•Thermal insulation
•Fire resistance
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
DISADVANTAGES
•Durability
•Fragility
•Thermal insulation
•Fire resistance
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
DISADVANTAGES
•Durability
•Fragility
•Thermal insulation
•Fire resistance
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
REASONABLE APPLICATIONS
Taking into account
ADVANTAGES and DISADVANTAGES
Good solution for temporary
structures
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COMPUTER AID
Computer program COSMIC
written according to:
•American materials
•American conditions
•American standards
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COMPUTER AID
Computer program COSMIC
written according to:
•American materials
•American conditions
•American standards
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COMPUTER AID
Computer program COSMIC
written according to:
•American materials
•American conditions
•American standards
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COMPUTER AID
Computer program COSMIC
written according to:
•American materials
•American conditions
•American standards
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
GUST RESPONSE FACTOR
Polish wind code PN77/B-2011
  1.8 (2.2)
ASCE standard
 ~ 1.3
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COSMIC APPLICATION
Initial cost estimation
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COMPUTATIONAL PROBLEMS
Required data:
•loads
•material properties
•geometric characteristic
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COMPUTATIONAL PROBLEMS
Required data:
•loads
•material properties
•geometric characteristic
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COMPUTATIONAL PROBLEMS
Required data:
•loads
•material properties
•geometric characteristic
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
COMPUTATIONAL PROBLEMS
Difficulties in estimation:
•tension and bending stiffnesses
•load bearing capacity
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ASSESMENT OF PROFILE PROPERTIES
Free supported
statical scheme
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
ASSESMENT OF PROFILE PROPERTIES
Free supported
statical scheme
Ark scheme
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
OTHER DESIGN PROBLEMS
Maximum span (MIC240):
•advertisement – up to 36 m
•Author’s judgement – 20-24 m
(depending on loads and ark arrow)
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
OTHER DESIGN PROBLEMS
Maximum span (MIC240):
•advertisement – up to 36 m
•Author’s judgement – 20-24 m
(depending on loads and ark arrow)
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
FINAL REMARKS AND FURTHER WORK
•hesitations based on experience
•lack of academic references
•proposal of experiment
•$$$
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
FINAL REMARKS AND FURTHER WORK
•hesitations based on experience
•lack of academic references
•proposal of experiment
•$$$
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
FINAL REMARKS AND FURTHER WORK
•hesitations based on experience
•lack of academic references
•proposal of experiment
•$$$
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DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
FINAL REMARKS AND FURTHER WORK
•hesitations based on experience
•lack of academic references
•proposal of experiment
•$$$
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LIGHTWEIGHT STRUCTURES in CIVIL ENGINEERING
Warsaw-Częstochowa, 3 December, 2004
Thank you
for your kind attention
DESIGN PROBLEMS OF COLD FORMED
LIGHTWEIGHT ARK STRUCTURES
Ryszard Walentyński
[email protected]