Ill. Admin. Code tit. 77, pt. 870, tbl. G

Current through Register Vol. 49, No. 2, January 10, 2025

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.