Design and Engineering of a Welded Steel L-Shape Bracket
Detailed engineering project outcomes for an L-shape welded steel bracket, including CAD designs, structural calculations, and project evaluation.
EAL Level 2 Unit 38 – Plan and Carry Out a Project in Engineering
Task 3: Present Project Outcomes – L-Shape Welded Steel Bracket
Student Engineering Project | 2026
Project Brief & Scope
What Was the Task?
The central project was to design a small welded steel L-shape bracket targeted for a workshop welding area. It acts as an organizational unit to reliably store heavier hand tools (up to 15 kg).
The bracket requires an even top surface for stacking components flush, and must be completely fully welded and verified under a steady load. Exclusively steel components are permitted without any electronic inclusions.
Hold min. <span style="color:#FF7000; font-weight:700;">15 kg</span> (target 25 kg with safety margin)
Size: <span style="color:#FF7000; font-weight:700;">300 × 200 × 150 mm</span> ±5 mm
<span style="color:#FF7000; font-weight:700;">M6 mounting holes</span> in base plate
Deflection under load: <span style="color:#FF7000; font-weight:700;">max 2 mm</span>
<span style="color:#FF7000; font-weight:700;">Mild steel</span> construction only
<span style="color:#FF7000; font-weight:700;">Smooth, safe edges</span> after finishing
Project Aim & SMART Objectives
Project Aim
To design a small, welded steel bracket that is practical to fabricate, structurally sound, and fully documented for workshop approval.
Produce at least 3 initial design concepts and select one final option by evaluation
Complete a fully dimensioned technical drawing and CAD model
Carry out basic structural checks to confirm the bracket suits the intended load
Prepare a bill of materials and fabrication notes
Complete all final design documentation by the agreed deadline
Objectives were set to be Specific, Measurable, Achievable, Relevant, and Time-Bound
Project Plan & Schedule
Student Engineering Project | 2026
Brief sign-off
Initial design drafts
Safety checks started
Concept sketches fully developed
Design options compared
Materials procured
Cutting and edge prep started
Safety checks 50% complete
Welding complete
Full assembly done
Functional testing started
Edges smoothed
Testing complete
Documentation finalised
Project handed over
6
SESSIONS LOGGED
2
FORMAL REVIEWS
ON TIME
DELIVERY
A session log was kept throughout (9 sessions, 05/03 to 27/03/2026)
Total planned duration: 6 weeks — actual complete in 6 weeks (minor CAD delay recovered)
Initial Design Ideas – Three Concepts
Flat Plate Bracket
Simple flat steel plate with drilled holes and basic welds
Easy to make, low material cost
Less rigid, prone to bending under load
LOW
HIGH
LIMITED
Gusseted Bracket
Triangular gusset improves stiffness and spreads load through welds
Simple to fabricate, best balance of strength and manufacturability
Best overall candidate
HIGH
HIGH
BEST OVERALL
Folded/Angled Bracket
Angled/bent form reduces welding but more complex to fabricate
Good stiffness but less suitable for available workshop process
MEDIUM-HIGH
MEDIUM-LOW
GOOD, LESS PRACTICAL
The gusseted bracket was selected for the best load path, rigidity, and ease of fabrication.
Sketches & Design Development
Student Engineering Project | 2026
Engineering Project
Design Development Process
Brief review → identify constraints
3 concept sketches produced
Comparison using decision matrix
Preferred design (gusseted) selected
Hand sketch developed with dimensions
CAD model created and refined
Final drawing package produced
Engineering Calculations
σ = F/A | δ = FL³/3EI
CALC C1 – MIN. LOAD CAPACITY
Requirement: Hold minimum 15 kg
Method: Load path through base and side plates analysed
Gusseted steel bracket distributes load effectively
Result: Stress within mild steel limits ✓
CALC C2 – SAFETY MARGIN (TARGET 25 KG)
Overdesigned section: 4–5 mm steel plate thickness
Gusset reinforcement increases capacity beyond 15 kg
Target capacity ~25 kg achieved with safety margin ✓
CALC C3 – DEFLECTION CHECK
Load applied: 15 kg
Method: Beam-style deflection check, short span
Estimated deflection: under 2 mm limit
Conclusion: Design within acceptable limits ✓
All three structural checks confirmed the design is suitable for fabrication and meets the original brief requirements.
Structural Calculations Review | 2026
CAD Drawings & Final Design
Final Design Features
Drawing Pack: D1 | D2 | D3 — Workshop Ready
Material: Mild steel, 4–5 mm plate
Overall size: 300 × 200 × 150 mm
4 × M6 mounting holes in base plate, evenly spaced
Triangular gusset for load distribution
All welded construction — no bolts in main structure
Smooth, ground-down edges for safe handling
Drawing revision: Rev C (final)
Bill of materials: steel plates, gusset, M6 bolts, washers
Progress Reviews & Session Log
Project Monitoring Evidence
Both reviews confirmed project remained on track. Minor CAD delay resolved before final documentation stage.
Student Engineering Project | 2026
Design Specification Compliance
Student Engineering Project | 2026
All 10 specification requirements were fully met.
Minor improvement possible: more detailed corrosion protection spec.
Issues, Risks & Contingency
Student Engineering Project | 2026
All identified issues were resolved before final documentation. Contingency planning was effective.
Evaluation & Conclusion
Student Engineering Project | 2026
5/5
SMART Objectives Achieved
6 Weeks
On Time Delivery
10/10
Spec Requirements Met
What Went Well
Strong planning and structured session log
Regular progress reviews kept project on track
Good design selection process using decision matrix
Gusseted design gave best balance of strength and ease of fabrication
All documentation completed to workshop-ready standard
What I Would Improve
Spend more time refining the first concept before starting CAD
Validate geometry earlier to avoid alignment errors
Add more detailed corrosion protection specification
Consider more advanced stress simulation in future
The design is ready to be passed to manufacture. All key requirements have been met, documentation is complete, and risks have been controlled. The project brief was achieved in a controlled and professional way.
- engineering-project
- welding-design
- steel-bracket
- cad-drawing
- structural-calculations
- mechanical-engineering
- project-management