I can evaluate structural concepts with a weighted decision matrix and create a build plan for the selected concept.
POE Unit 2 • Lesson 2.16
Concept Development, Decision Matrix, and Build Plan
Focus question: How can a team select a structural concept without relying on preference alone?
Mission Briefing
Today’s Plan
A focused sequence that builds toward the aerospace payload support structure challenge.
Opening promptConcept modelGuided analysisInteractive practiceEvidence checkExit ticket
Lesson Targets
What You Will Be Able to Do
Decision matrix and build plan
Scores are justified with structural reasoning, the selected concept matches the totals, and the plan defines dimensions, materials, joints, and tests.
Activity Flow
How the Lesson Moves
Each step builds the structural reasoning needed for the lesson deliverable.
1. Generate distinct concepts
Vary geometry, load path, bracing, and connections rather than surface details.
2. Compare with evidence
Use weighted criteria and documented scoring rationale.
3. Plan the build
Convert the selected concept into dimensions, materials, sequence, and verification steps.
Lesson Interactive
Select a Structural Concept
Use weighted structural criteria to compare three concept directions and choose the highest justified total.
Concept Scores
| Concept | Load path | Low mass | Build reliability |
|---|---|---|---|
| A: Braced tower | 5 | 3 | 4 |
| B: Wide frame | 4 | 2 | 5 |
| C: Tapered truss | 4 | 5 | 3 |
Scores are a training example. A real matrix should include team sketches, estimates, research, and testing risks.
Weights and Decision
0Concept A
0Concept B
0Concept C
Multiply each score by its weight, sum the totals, and choose the highest justified concept.
Today’s Work
Main Deliverable
Concept Selection Package
Select and plan the payload-support concept.
- Complete a weighted decision matrix for at least three structurally distinct concepts.
- Create a build plan with dimensions, material quantities, connection details, sequence, and planned tests.
Exit Ticket
Mission Debrief
State one structural idea from today in your own words.
Name one calculation, measurement, diagram, or observation that could support a design decision.
Identify one question or risk to carry into the next structural lesson.
Resources
Lesson Resources
Lesson 2.16 PowerPoint
Use the presentation to review the lesson concepts, examples, and activity directions.
Principles of Engineering
Return to the POE course hub for units, resources, certifications, and current course information.
Aerospace Payload Support Structure
Use this unit project context when connecting analysis, material decisions, prototype testing, and final design-review evidence.