TABLE D: MANHOLE TESTING

Minimum Test Times for Various Manhole Diameters
Diameter (in)
	30	33	36	42	48	54	60	66	72
Depth (ft)	Time (seconds)
8	11	12	14	17	20	23	26	29	33
10	14	15	18	21	25	29	33	36	41
12	17	18	21	25	30	34	39	43	49
14	20	21	25	30	35	41	46	51	57
16	22	24	29	24	40	46	52	58	67
18	25	27	32	38	45	52	59	65	73
20	28	30	35	42	50	53	65	72	81
22	31	33	39	46	55	64	72	79	89
24	33	36	42	51	59	64	78	87	97
26	36	39	46	55	64	75	85	94	105
28	39	42	49	59	69	81	91	101	113
30	42	45	53	63	74	87	98	108	121

 

(Ord. 2019-8-26(A), passed 8-26-2019)