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The maximum principal strain
| Opening Gap (mm) | Maximum principal strain ( ) |
||||||
|---|---|---|---|---|---|---|---|
| Zone 1 | Zone 2 | Zone 2.5 | Zone 3 | Zone 3.5 | Zone 4 | Zone 5 | |
| Gap 5 | 170,000 | 90,700 | 44,900 | 10,100 | 5920 | 3470 | 1580 |
| Gap 10 | 107,300 | 76,400 | 31,400 | 11,100 | 5470 | 3850 | 1580 |
| Gap 15 | 96,500 | 88,000 | 34,800 | 10,500 | 6130 | 3030 | 1580 |
