77 Ill. Adm. Code 870.TABLE C

C Footing Areas Required for Soil's Load-Bearing Capacity - Design Roof Load 30 Pounds Per Square Foot

Year: 2026Length: 118 wordsOfficial source
Section 870.TABLE CĀ Ā  Footing Areas Required for Soil's Load-Bearing Capacity āˆ’ Design Roof Load 30 Pounds Per Square Foot 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) 3550 4150 4750 4750 5550 6350 5950 6950 7950 Soil's Load- Bearing Capacity (lbs/ft 2 ) Footing Area (square inches) 1000 511 598 684 684 799 914 857 1001 1145 1500 341 398 456 456 533 610 571 667 763 2000 256 299 342 342 400 457 428 500 572 3000 170 199 228 228 266 305 286 334 382 4000 144 148 171 171 200 229 214 250 286
77 Ill. Adm. Code 870.TABLE C: C Footing Areas Required for Soil's Load-Bearing Capacity - Design Roof Load 30 Pounds Per Square Foot | Justis AI