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MEC 411

COMMON ASSIGNMENT

SEPTEMBER 2013JANUARY 2014

Submission date:

13 December 2013

Theme:

STRUCTURES IN TASIK SHAH ALAM PLAYGROUND

Objectives:

1. To help students relate the fundamental principles learned in class with real life

occurrences. (CO1)

2. To train students to do analysis and apply theories to real life problem and situations.(CO2)

3. To develop students teamwork skills. (CO3)

Instructions:

1. Students are required to conduct this exercise in groups (maximum is 5 persons).

2. Take several photos of a structure existing at Tasik Shah Alam Playground. Focus only on

one structure and photos should be available in different angles and must be clear.

3. Complexity of the structure will be taken into consideration more complex structure will

give you higher mark.

4. Observe and study the structure from the perspective of MEC411: Mechanics of Materials

course (materials used, external loadings, and design parameters such as the cross

section, length, width, and diameter).

5. Construct the proper free body diagram for the chosen structure.

6. Make your own assumptions where necessary and make sure they are justifiable and

logical.

7. Determine the support reactions.

8. Determine the internal forces (internal torque, moment, shear and normal forces).

9. Determine the maximum or the critical stress at a significant member (or members) of the

structure.

10. Determine the maximum or the critical deformation at a significant member (or members)of the structure.

11. Discuss your results and findings. You may discuss your results by comparing the

calculated values with the failure strength of the material used for the structure which can

be obtained from the textbook.

12. Write a report of your findings.

13. The report must be at least 5 pages long. The maximum is 10 pages.

14. This assignment will contribute 10% (8%: report and 2%: peer assessment) to the overall

course mark.

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Report requirements:

Your report must contain the following items:

1. Introductionexplain briefly on the related theories, principles and formulae.

2. Problem statement/Objectives

3. Methodology, Analysis and Results the main solution including the FBDs,

assumptions made, equilibrium equations, shear and moment diagrams, calculation of

normal, shear and bending stress, calculation of strain and deformation, deflectionequation and other related contents.

4. Discussion and Conclusion

5. Referencestextbook, journals, technical reports

Report Writing Rubric Assessment

Scale 1 2 3 4 5

Criteria Poor Acceptable Excellent Factor

CO1 Introduction andobjectives

Topic is poorlyintroduced. Lack of

understanding on therelated principles andtheories of the topic.

Objectives are poorlydefined.

Topic is fairly introduced.Moderate understanding of

on the relat edprinciples and theoriesof the topic.

Objectives are fairlydefined.

Topic is well introduced.Clear explanation of on the

related principles andtheories of the topic.

Objectives are welldefined.

10

CO1Complexity of

structure

Chosen structure is verysimple. Consists of only1- 2 parts.

Chosen structure isconsisted of 3-5 parts.

Chosen structure iscomplex consisting ofmore than 5 parts.

5

CO1 Assumptions Assumptio ns are poorly

made and unjustifiable. Assumpt ions are fairly

made and justifiable.

Assumptions are wellmade and perfectly

justifiab le.5

CO1Photos and freebody diagrams

Photos of structure areunclear.

Free body diagrams arepoorly translated from

the photos of structure. Dimensions and labels

are missing.

Photos of structure areclear.

Free body diagrams arefairly translated from the

photos of structure. Maynot be fully accurate.

Dimensions and labelsare adequate.

Photos of structure areclear.

Free body diagrams arewell translated from thephotos of structure.

Every detail in the photosis accurately described inthe FBDs.

Dimensions and labelsare complete.

10

CO2Results &

calculations

Incomplete procedures .

Attempted to calculateonly o1-2 value.

Wrong results.

Detailed procedures.

Attempted to calculatemore than two values.

One or two wrong results.

Detailed procedures.

Attempted to calculate allvalues (maximum normal,stress, maximum shearstress, deformations,strain, deflection, etc.).

Correct results.

20

CO2 Discussions Poorly made discussions.

Discussions are fairlymade. Able to relate theestimated calculations withthe strength properties of

the material used in thestructure.

Discussions are very wellmade and elaborated. Ableto relate and discusscomprehensively theestimated results with the

strength properties of thematerial used in thestructure.

20

CO2 Conclusions Unclear concluding

remarks. Topic is fairly concluded Topic is well concluded. 8

References Less than 3 references

Wrong format

At least 5 References

Wrong format

At least 5 References

Correct format2

Total 80

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