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

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

Table A - Soil Pressure

Soil Type ____________________	Allowable Pressure (lbs/sq. ft.) ________________________
Hard Pan or Rock	4,000 and up
Gravel or Sandy Gravel	2,000
Sandy or Silty Sand	1,500
Clay or Silty Clay	1,000
Peat or Uncompacted Fill	Special Analysis Required

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