CIV2206 - Structural mechanics - 2019

6 points, SCA Band 2, 0.125 EFTSL

Undergraduate - Unit

Refer to the specific census and withdrawal dates for the semester(s) in which this unit is offered.



Organisational Unit

Department of Civil Engineering

Chief examiner(s)

Professor Jeff Walker


Dr Elizabeth Sironic (Clayton)
Dr Mavinakere Raghunandan (Malaysia)

Unit guides



  • First semester 2019 (On-campus)


  • First semester 2019 (On-campus)


This unit involves the study of various loadings (axial force, moment, shear force, toque) as well as the resulting stresses and strains that occur in engineering structures. It builds on aspects taught in the level 1 unit, ENG1001. Topics covered include: bending moment diagrams of determinate and indeterminate beam and frame systems, the combination of bi-axial bending and axial stresses (including those resulting from thermal loading); partial and fully plastic section moment capacities; torsion, shear stress and shear flow in beams; and the calculation of reactions and deflections in both determinate and indeterminate systems using both compatibility and the energy method. The theory of elasticity is introduced, covering: the transformation of stress and strain and the calculation of principal and maximum shear stresses and strains; the constitutive relationship between elastic stress-strain behaviour; Mohr's circle; and failure criterion with specific reference to pressure vessels.


At the successful completion of this unit, you will be able to:

  1. Analyse structural behaviour (calculating reactions and bending moment diagrams and deflected shapes) of simple determinate and indeterminate beam and frame systems using qualitative and quantitative methods.
  2. Identify and determine elastic normal stresses, shearing stresses and shear flow in simple structures as a result of external (including thermal) loading producing internal actions of axial force, bending, torsion and shear.
  3. Determine the partial plastic and fully plastic section moment capacities of both symmetrical and asymmetrical steel sections.
  4. Determine deflections in linearly elastic determinate systems.
  5. Determine stresses and strains (and their relationship) in two dimensions utilising the concepts of principal stress and Mohr's circle, and select and use appropriate failure theories for engineering materials.
  6. Formulate technical reports and communicate effectively in team assignments, interpreting and analysing experimental data, utilising basic analysis software packages and relating results to the theory taught.


Continuous assessment: 50%

Examination (2 hours): 50%

Students are required to achieve at least 45% in the total continuous assessment component and at least 45% in the final examination component and an overall mark of 50% to achieve a pass grade in the unit. Students failing to achieve this requirement will be given a maximum of 45% in the unit.

Workload requirements

3 hours lectures, 2 hours practice classes and 7 hours of private study per week

See also Unit timetable information

This unit applies to the following area(s) of study

Civil Engineering

Geological Engineering

Mining Engineering

Oil and Gas Engineering

Renewable Energy Engineering