During the study of a structure (reinforced concrete, steel etc.) one must encounter two different types of problems: Analysis & Design of the structure. Although same principals are used in both cases, solving these problems requires different procedures.

Structural Analysis vs Structural Design

Followings are the differences between structural design and structural analysis:

 Structural AnalysisStructural Design
1 Gererally in a structural analysis problem following properties are given:
  • Cross-sectional dimensions
  • Number of reinforcement
  • Reinforcement diameter
  • Location of the reinforcement
  • Concrete strength
  • Steel yield strength.
Gererally in a structural design problem following properties are given:
  • Design loads: dead load, live load, wind load, seismic load etc.
  • Design moments
  • Load/moment factor to be considered.
2 Gererally in a structural analysis problem following results should be obtaiened:
  • Resistance
  • Strength
  • Adequacy.
Gererally in a structural design problem following results should be obtaiened:
  • Suitable cross-section
  • Workable dimensions
  • Material Strength
  • Reinforcement details.
3 There should be some specific solutions. There could be many possible solutions.
4 As all the parameters are provided, analysis is easier. As many choices are available and a lot of decisions need to be taken, design is harder.

 

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