Section 870.TABLE G Pier Load and Minimum Pier Capacity
for 16 Foot Wide Section (Pounds)
|
Roof Live Load (psf)
|
Mating/Perimeter Wall Opening (feet)
|
|
5
|
10
|
15
|
20
|
25
|
30
|
35
|
|
20
|
1200
|
2300
|
3500
|
4700
|
5800
|
7000
|
8100*
|
|
30
|
1600
|
3100
|
4700
|
6200
|
7800
|
9300*
|
10900*
|
|
40
|
1900
|
3800
|
5800
|
7500
|
9700*
|
11600*
|
13600*
|
Soil's Load- Bearing Capacity (psf)
|
Footing Area (square inches)
|
1000
|
20
|
173
|
331
|
504
|
677
|
835
|
1008
|
1166
|
30
|
230
|
446
|
677
|
893
|
1123
|
1339
|
1570
|
40
|
274
|
547
|
835
|
1080
|
1397
|
1670
|
1958
|
1500
|
20
|
144
|
221
|
336
|
451
|
557
|
672
|
778
|
30
|
154
|
298
|
451
|
595
|
749
|
893
|
1046
|
40
|
182
|
365
|
557
|
720
|
931
|
1114
|
1306
|
2000
|
20
|
144
|
165
|
252
|
338
|
418
|
504
|
583
|
30
|
144
|
223
|
338
|
446
|
562
|
670
|
785
|
40
|
144
|
144
|
418
|
540
|
698
|
835
|
979
|
3000
|
20
|
144
|
144
|
168
|
226
|
278
|
336
|
389
|
30
|
144
|
149
|
226
|
298
|
374
|
446
|
523
|
40
|
144
|
182
|
278
|
360
|
466
|
557
|
653
|
4000
|
20
|
144
|
144
|
144
|
169
|
209
|
252
|
292
|
30
|
144
|
144
|
169
|
223
|
281
|
335
|
392
|
40
|
144
|
144
|
209
|
270
|
349
|
418
|
490
|
|
|
|
|
|
|
|
|
|
|
|
|
* 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.