Ill. Admin. Code tit. 77, pt. 906, app A, ILLUSTRATION I

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

Maximum Manifold Length (ft) for Various Manifold Diameters Given the Lateral Discharge Rate and Lateral Spacing

Lateral Discharge Rate		Manifold Diameter - 11/4"					Manifold Diameter - 11/2 "						Manifold Diameter - 2"
End Manifold	Central Manifold	Lateral Spacing (ft)					Lateral Spacing (ft)						Lateral Spacing (ft)
2	4	6	8	10	2		4	6	8	10	2	4	6	8	10
10	5	4	8	6	11	10	10		5	6	8	10	12	16	24	24	30
20	10	4	4	6	4		4	6	8	10	4	8	12	16	20
30	15	2	2		4	6	6	8	6	8	10
40	20			4	4	6	8	10
50	25			2	4	6	8
60	30			2	4
70	35			2	4
80	40			2
90	45			2
100	50			2

Lateral Discharge Rate		Manifold Diameter - 3"					Manifold Diameter - 4 "						Manifold Diameter - 6"
End Manifold	Central Manifold	Lateral Spacing (ft)					Lateral Spacing (ft)						Lateral Spacing (ft)
2	4	6	8	10	2		4	6	8	10	2	4	6	8	10
10	5	24	40	48	56	70	42		64	84	96	110	84	136	174	206	240
20	10	16	24	30	32	40	26		40	54	64	70	54	84	108	128	150
30	15	12	16	24	24	30	20		28	36	48	50	42	64	84	96	110
40	20	10	12	18	16	20	16		24	30	32	40	34	52	66	80	90
50	25	8	12	12	16	20	14		20	24	32	40	30	44	60	72	80
60	30	6	8	12	16	20	12		16	24	24	30	26	40	48	64	70
70	35	6	8	12	8	10	10		16	18	24	30	24	36	48	56	60
80	40	6	8	6	8	10	10		12	18	16	20	22	32	42	48	60
90	45	4	8	6	8	10	8		12	18	16	20	20	28	42	48	50
100	50	4	4	6	8	10	8		12	12	16	20	18	28	36	40	50
110	55	4	4	6	8	10	8		12	12	16	20	16	24	36	40	40
120	60	4	4	6	8	10	6		8	12	16	10	16	24	30	32	40
130	65	4	4	6	8	10	6		8	12	16	10	14	24	30	32	40
140	70	2	4	6	8	6		8	12	8	10	14	20	24	32	40
150	75	2	4	6	6		8	12	8	10	14	20	24	32	30
160	80	2	4	6	6		8	6	8	10	12	20	24	32	30
170	85	2	4	6	4		8	6	8	10	12	20	24	24	30
180	90	2	4	4		8	6	8	10	12	16	24	24	30
190	95	2	4	4		8	6	8	10	12	16	18	24	30
200	100	2	4	4		4	6	8	10	10	16	18	24	30

Ill. Admin. Code tit. 77, pt. 906, app A, ILLUSTRATION I