KEY FOR WORKSHEET FOR CALCULATING SUPPORT FACTOR
| DENSITY | 25% IFD | 65% IFD | SUPPORT FACTOR | |
| 1. | 1.2 | 30 | 55 | _______1.83______ |
| 2. | 1.4 | 28 | 50 | _______1.79______ |
| 3. | 1.6 | 80 | 155 | _______1.94______ |
| 4. | 1.8 | 17 | 32 | _______1.88______ |
| 5. | 1.8 | 24 | 48 | _______2.00______ |
| 6. | 1.8 | 24 | 60 | _______2.50______ |
| 7. | 1.8 | 11 | 26 | _______2.36______ |
| 8. | 2.0 | 20 | 50 | _______2.50______ |
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