77 Ill. Adm. Code 870.TABLE F
F Pier Load and Minimum Pier Capacity for 14 Foot Wide Section (Pounds)
Section 870.TABLE FÂ Â 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*
40
1700
3400
5100
6800
8400*
10100*
11800*
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
*Â Â Â 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.