General Design Process
- General Design Process
- Understand Problem
- Conceptual Design
- Embodiment Design
- Detail Design
- Prototype and Testing
- Completion (Implementation)
What is Design
- Creative
- Synthesis
- No Unique Solution/Open Ended Problem
- Collaboration in a Team
Learning of Design
- Problem Formulation is as Important as Problem Solution
- Do Design
- Design Process and Tools
(CE)E - Design Sequence
(with selected feedback cycles)
![](/courses/1-012-introduction-to-civil-engineering-design-spring-2002/2a0eca1cc36ab431f250b6e6082ddc6a_design_sequence.jpg)
The Decision Analysis Cycle
(after Stael von Holstein, 1973)
![](/courses/1-012-introduction-to-civil-engineering-design-spring-2002/597fa4beb4a86ef1bb308dcc7d1b7c1f_decision_analysis.jpg)
Deterministic Phase | Probabilistic Phase |
1. Define Problem and Limits of Investigation | 1. Express Uncertainty in Variables by Means of Probabilities |
2. Alternative Courses of Action | 2. Probabilistic Model |
3. Outcomes of Each Alternative | 3. Establish Relative Value of Probabilistic Outcomes |
4. Select Decision and State Variables | 4. Probabilistic Sensitivity Analysis |
5. Relate Outcomes and Variables | |
6. Time Preference | Information Phase |
7. Dominated Alternatives Eliminated | 1. Value of Perfect Information |
8. Sensitivity of Outcome to Variables | 2. Evaluate Various Information Collection Schemes |
Design Process
The “Design Circle”
![](/courses/1-012-introduction-to-civil-engineering-design-spring-2002/ba2fa37223e08d33e444119cdbf4ffa0_design_process.jpg)
The “Design Spiral”
![](/courses/1-012-introduction-to-civil-engineering-design-spring-2002/3d5656fb1db565036ff6fa900a9dadfb_design_process2.jpg)
Pugh Chart
![](/courses/1-012-introduction-to-civil-engineering-design-spring-2002/bea18b48f25f7ebda981b03143ccc20b_pugh_chart.jpg)
Pugh Chart / House of Quality
![](/courses/1-012-introduction-to-civil-engineering-design-spring-2002/ac6e74cf01edce9159ad19d7ada14751_pugh_chart2.jpg)
Screening Matrix
![](/courses/1-012-introduction-to-civil-engineering-design-spring-2002/b4a87b8614388b19b2d37eb8cc378969_screening_matrix.jpg)
Scoring Matrix
![](/courses/1-012-introduction-to-civil-engineering-design-spring-2002/f96097b0cb2a68addaa32c58e5f8e444_scoring_matrix.jpg)