Illinois Administrative Code
Title 77 - PUBLIC HEALTH
Part 870 - MANUFACTURED HOME INSTALLATION CODE
Table C - Footing Areas Required for Soil's Load-Bearing Capacity - Design Roof Load 30 Pounds Per Square Foot
Universal Citation: 77 IL Admin Code ยง C
Current through Register Vol. 48, No. 12, March 22, 2024
|
Section Width (feet) |
|||||||||
|
12 |
14 |
16 |
12 |
14 |
16 |
12 |
14 |
16 |
|
|
Support Spacing (feet) |
|||||||||
|
6 |
6 |
6 |
8 |
8 |
8 |
10 |
10 |
10 |
|
|
Support Loading (pounds per pier) |
|||||||||
|
3550 |
4150 |
4750 |
4750 |
5550 |
6350 |
5950 |
6950 |
7950 |
|
|
Soil's Load- Bearing Capacity (lbs/ft2) |
Footing Area (square inches) |
||||||||
|
1000 |
511 |
598 |
684 |
684 |
799 |
914 |
857 |
1001 |
1145 |
|
1500 |
341 |
398 |
456 |
456 |
533 |
610 |
571 |
667 |
763 |
|
2000 |
256 |
299 |
342 |
342 |
400 |
457 |
428 |
500 |
572 |
|
3000 |
170 |
199 |
228 |
228 |
266 |
305 |
286 |
334 |
382 |
|
4000 |
144 |
148 |
171 |
171 |
200 |
229 |
214 |
250 |
286 |
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