Illinois Administrative Code
Title 77 - PUBLIC HEALTH
Part 870 - MANUFACTURED HOME INSTALLATION CODE
Table F - Pier Load and Minimum Pier Capacity for 14 Foot Wide Section (Pounds)
Roof Live Load (psf) |
Mating/Perimeter Wall Opening (feet) |
||||||||||||||
5 |
10 |
15 |
20 |
25 |
30 |
35 |
|||||||||
20 |
1000 |
2000 |
3000 |
4100 |
5100 |
6100 |
7100 |
||||||||
30 |
1400 |
2700 |
4100 |
5400 |
6800 |
8100* |
9500* |
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40 |
1700 |
3400 |
5100 |
6800 |
8400* |
10100* |
11800* |
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Soil's Load- Bearing Capacity (psf) |
Footing Area (square inches) |
||||||||||||||
1000 |
20 |
144 |
288 |
432 |
590 |
734 |
878 |
1022 |
|||||||
30 |
202 |
389 |
590 |
778 |
979 |
1166 |
1368 |
||||||||
40 |
245 |
490 |
734 |
979 |
1210 |
1454 |
1699 |
||||||||
1500 |
20 |
144 |
192 |
288 |
394 |
490 |
586 |
682 |
|||||||
30 |
144 |
259 |
394 |
518 |
653 |
778 |
912 |
||||||||
40 |
163 |
326 |
490 |
653 |
806 |
970 |
1133 |
||||||||
2000 |
20 |
144 |
144 |
216 |
295 |
367 |
439 |
511 |
|||||||
30 |
144 |
194 |
295 |
389 |
490 |
583 |
684 |
||||||||
40 |
144 |
245 |
367 |
490 |
605 |
727 |
850 |
||||||||
3000 |
20 |
144 |
144 |
144 |
197 |
245 |
293 |
341 |
|||||||
30 |
144 |
144 |
197 |
260 |
326 |
389 |
456 |
||||||||
40 |
144 |
163 |
245 |
326 |
403 |
485 |
566 |
||||||||
4000 |
20 |
144 |
144 |
144 |
148 |
184 |
220 |
256 |
|||||||
30 |
144 |
144 |
148 |
194 |
245 |
292 |
342 |
||||||||
40 |
144 |
144 |
184 |
245 |
302 |
364 |
425 |
* Individual supports shall NOT support loads greater than 8000 pounds for a single stack of 8"x8"x16" stack of blocks, 14000 pounds for a double stack.