Illinois Administrative Code
Title 77 - PUBLIC HEALTH
Part 870 - MANUFACTURED HOME INSTALLATION CODE
Table D - Footing Areas Required for Soil's Load-Bearing Capacity - Design Roof Load 40 Pounds Per Square Foot
Universal Citation: 77 IL Admin Code ยง D
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) |
|||||||||
|
3950 |
4650 |
5300 |
5300 |
6150 |
7050 |
6600 |
7700 |
8800* |
|
|
Soil's Load- Bearing Capacity (lbs/ft2) |
Footing Area (square inches) |
||||||||
|
1000 |
569 |
670 |
763 |
763 |
886 |
1015 |
950 |
1109 |
1267 |
|
1500 |
379 |
446 |
509 |
509 |
590 |
677 |
634 |
739 |
845 |
|
2000 |
284 |
335 |
382 |
382 |
443 |
508 |
475 |
554 |
634 |
|
3000 |
190 |
223 |
254 |
254 |
295 |
338 |
317 |
370 |
422 |
|
4000 |
144 |
167 |
191 |
191 |
221 |
254 |
238 |
277 |
317 |
a) First footing centered within 2 feet from end of home.
b)* Individual supports, concrete 8"x8"x16" blocks, shall NOT support loads greater than 8,000 pounds for a single stack and 14,000 pounds for a double stack pier.
Disclaimer: These regulations may not be the most recent version. Illinois may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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