Ill. Admin. Code tit. 77, pt. 905, app A, ILLUSTRATION I, exh. B
Current through Register Vol. 49, No. 2, January 10, 2025
Width of Trench at Bottom | Minimum Center to Center Spacing of Distribution Lines | Effective Absorption Area Per Lineal Foot of Trench |
Inches | Feet | Square Feet |
8 | 6.0 | 0.67 |
12 | 6.0 | 1.0 |
18 | 6.0 | 1.5 |
24 | 6.0 | 2.0 |
30 | 7.5 | 2.5 |
36 | 9.0 | 3.0 |
Ill. Admin. Code tit. 77, pt. 905, app A, ILLUSTRATION I, exh. B