Illinois Administrative Code
Title 77 - PUBLIC HEALTH
Part 870 - MANUFACTURED HOME INSTALLATION CODE
Table E - Pier Load and Minimum Pier Capacity for 12 Foot Wide Section (Pounds)
Roof Live Load (psf) |
Mating/Perimeter Wall Opening (feet) |
||||||||||||||
5 |
10 |
15 |
20 |
25 |
30 |
35 |
|||||||||
20 |
900 |
1800 |
2600 |
3500 |
4400 |
5300 |
6100 |
||||||||
30 |
1200 |
2300 |
3500 |
4700 |
5800 |
7000 |
8200 |
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40 |
1500 |
2900 |
4400 |
5800 |
7300 |
8800* |
10200* |
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Soil's Load- Bearing Capacity (psf) |
Footing Area (square inches) |
||||||||||||||
1000 |
20 |
144 |
259 |
374 |
504 |
634 |
763 |
878 |
|||||||
30 |
173 |
331 |
504 |
677 |
835 |
1008 |
1181 |
||||||||
40 |
216 |
417 |
634 |
835 |
1051 |
1267 |
1469 |
||||||||
1500 |
20 |
144 |
173 |
250 |
336 |
422 |
509 |
586 |
|||||||
30 |
144 |
221 |
336 |
451 |
557 |
672 |
787 |
||||||||
40 |
144 |
278 |
422 |
557 |
701 |
845 |
979 |
||||||||
2000 |
20 |
144 |
144 |
187 |
252 |
317 |
382 |
439 |
|||||||
30 |
144 |
166 |
252 |
338 |
418 |
504 |
590 |
||||||||
40 |
144 |
209 |
317 |
418 |
526 |
634 |
734 |
||||||||
3000 |
20 |
144 |
144 |
144 |
168 |
211 |
254 |
293 |
|||||||
30 |
144 |
144 |
168 |
226 |
278 |
336 |
394 |
||||||||
40 |
144 |
144 |
211 |
278 |
350 |
422 |
490 |
||||||||
4000 |
20 |
144 |
144 |
144 |
144 |
191 |
191 |
220 |
|||||||
30 |
144 |
144 |
144 |
169 |
209 |
252 |
295 |
||||||||
40 |
144 |
144 |
158 |
209 |
263 |
317 |
367 |
* 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.