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Comparison of Construction method

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Strut method (L=600.0m, B=22.0m, Average H=8.0m, Load Decking:100m Criteria)

Classification Steel Pipe Strut
Working Drawing
Structural Safety
  • High structural safety
  • Better structural shape
  • Strut longitudinal interval L≤5m
  • Strut transverse interval L≤17m
Construct Ability
  • Less supplement
  • Able to secure work space for heavy
        equipment
  • Faster construction with easy
        installation
  • Able to secure relatively wide
        working space
Economic Efficiency
  • Estimated construction
        cost $4.15 million (1.00)
Appraisals
  • Secure structural safety
  • High economic and workability
Classification H-shape steel strut
Working Drawing
Structural Safety
  • Normal structural safety
  • Weakness for bucking of weak axis
        direction
  • Strut longitudinal spacing L≤3m
  • Strut transverse spacing L≤8m
Construct Ability
  • Minimize influence on nearby
        ground
  • Many supplements are required
  • Restriction of working area
  • Domestic common method
Economic Efficiency
  • Approximate construction
        cost: $4.77 million (1.15)
Appraisals
  • Most common method

Non strut method

Classification Earth anchor
Working Drawing
Structural Safety
  • Low structural safety
  • Restriction of ground condition
  • Anchor spacing: 2~4m
Construct Ability
  • Optimum method for securing
        wild working space
  • Favorable to build main structure


  • Civil complaints from occupying
        nearby private land
  • Generalized method
Economic Efficiency
  • Estimated construction
        cost: $5.39 million (1.30)
Appraisals
  • If surrounding condition is met,
        high workability