Computer Applications In Civil Engineering

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Computer Applications in Civil Engineering
Finite Element Design Project Balcony of a
Karaoke Bar
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The Balcony
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Assumptions

• All modelling to be done in 2D
• Wind load is ignored as the structure is
  surrounded by tall buildings.
• There is no furniture on the balcony.

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Materials Used

• Cross Beam, Balcony Column, Rafter, Rail, Door
  Frame, Deck Fence
• Timber (12 m.c.) Ash, alpine
• Youngs Modulus 14 GPa
• Density 650 kg/m3
• Thermal Expansion 3.5 x 10-6 /k

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Materials Used

• Column Wall
• Concrete Compressive Strength fc 25 MPa
• Youngs Modulus 27.46 GPa
• Density 2400 kg/m3
• Shear Modulus 11.44 GPa
• Poissons Ratio 0.2
• Thermal Expansion 1.0 x 10-5 /k

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Materials Used

• Roof
• Aluminium Alloy 1050 O
• Youngs Modulus 69 GPa
• Density 2700 kg/m3
• Poissons Ratio 0.334
• Thermal Expansion 2.4 x 10-5 /k

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Member Specifications

• Rafter
• B 35 mm
• D 140 mm
• Balcony Column
• Dia 120 mm

D
B
Diameter
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Member Specifications

• Cross Beam
• B 100 mm
• D 190 mm
• Cross Beam
• Dia 120 mm

D
B
Diameter
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Member Specifications

• Fence
• B 45 mm
• D 70 mm
• Rail
• B 140 mm
• D 45 mm

D
B
D
B
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Member Specifications

• Door Frame
• B 120 mm
• D 35 mm
• Deck
• Thickness 45 mm

D
B
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Member Specifications

• Roof
• Thickness 42 mm
• Wall
• Thickness 200 mm

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The Model
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Load Case 1
Self- weight of the balcony
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Load Case 2
Self- weight of the balcony live load of
assumption (50 person)
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Load Case 3
Self- weight of the balcony live load of
assumption (100 person)
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Result

• Beam
• Minimum fibre stress 167.92 kPa
• Maximum fibre stress 196.26 kPa
• Plate
• Minimum fibre stress 23.95 kPa
• Maximum fibre stress 51.13 kPa

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Result

• Maximum beam deflection 12 mm
• Maximum plate deflection 19.2 mm

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Conclusion

• Material used are acceptable as the maximum
  deflection is minimal.
• Safe for public use.
• Convergence study is not available for this
  presentation.

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Questions and Answers