35 Ill. Adm. Code 370.APPENDIX C
C Table No. 3 – Air Test Table for Sanitary Sewer Leakage Testing*
Section 370.APPENDIX C Table
No. 3 – Air Test Table for Sanitary Sewer Leakage Testing*
SPECIFICATION
TIME (MIN:SEC) REQUIRED FOR PRESSURE DROP
FROM
3½ TO 2½ PSIG WHEN TESTING ONE PIPE DIAMETER ONLY
Length of Sewer Pipe
In
Feet
PIPE
DIAMETER, INCHES
4
6
8
10
12
15
18
21
24
25
0:04
0:10
0:28
0:28
0:40
1:02
1:29
2:01
2:38
50
0:09
0:20
0:35
0:55
1:19
2:04
2:58
4:03
5:17
75
0:13
0:30
0:53
1:23
1:59
3:06
4:27
6:04
7:55
100
0:18
0:40
1:10
1:50
2:38
4:08
5:56
8:05
10:34
125
0:22
0:50
1:28
2:18
3:18
5:09
7:26
9:55
11:20
150
0:26
0:59
1:46
2:45
3:58
6:11
8:30
175
0:31
1:09
2:03
3:13
4:37
7:05
200
0:35
1:19
2:21
3:40
5:17
12:06
225
0:40
1:29
2:38
4:08
5:40
10:25
13:36
250
0:44
1:39
2:56
4:35
8:31
11:35
15:07
275
0:48
1:49
3:14
4:43
9:21
12:44
16:38
300
0:53
1:59
3:31
10:12
13:53
18:09
350
1:02
2:19
3:47
8:16
11:54
16:12
21.10
400
1:10
2:38
6:03
9:27
13:36
18:31
24:12
450
1:19
2:50
6:48
10:38
15:19
20:50
27:13
500
1:28
5:14
7:34
11:49
17:01
23:09
30:14
*From Standard Specifications
for Water and Sewer Main Construction in Illinois, Fourth Edition, May, 1986.
(Copies may be obtained from Illinois Society of Professional Engineers,
Springfield, Illinois 62704.)