🎓 Lesson 10
D5
Dry-Stacked Block Wall Interlock Mechanics
A dry-stacked block wall interlock is how specially shaped concrete or stone blocks fit together without mortar to resist sliding and tipping under soil pressure.
🎯 Learning Objectives
- ✓ Analyze interlock geometry to quantify resistance to sliding and rotation
- ✓ Design block setback and key depth to achieve minimum 1.5 safety factor against overturning
- ✓ Calculate effective interlock shear capacity using ASTM C1733 block interface parameters
- ✓ Explain how unit weight, setback, and interface friction govern overall wall stability
📖 Why This Matters
In mining waste containment, tailings storage facilities (TSFs), and steep-slope infrastructure, dry-stacked block walls provide rapid, modular, and drainage-friendly retention—without grouting or