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Assembly of TYTON JOINT® Pipe
| Field Cut Pipe
When pipe are cut in the field, the cut end may be readily conditioned so that it can be used to make up the next joint. The outside of the cut end should be beveled with a portable grinder about ¼-inch at an angle of about 30 degrees. The operation removes any sharp, rough edges which otherwise might injure the gasket. |
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| When ductile iron pipe 14" and larger is to be cut in the field, the material should be ordered as "GAUGED FULL LENGTH". Pipe that is "gauged full length" is specially marked to avoid confusion. The ANSI/AWWA standard for ductile iron pipe requires factory gauging of the spigot end. Accordingly, pipe selected for field cutting should also be field gauged in the location of the cut and found to be within the tolerances shown in Table 1. In the field a mechanical joint gland can be used as a gauging device. | |
Table 1. Suitable Pipe Diameters for Field Cuts and Restrained Joint Field Fabrication
Nominal
Pipe
Size
In. |
Min. Pipe
Diameter
In. |
Max. Pipe
Diameter
In. |
Min. Pipe
Circumference
In. |
Max. Pipe
Circumference
In. |
4
6
8
10
12 |
4.74
6.84
8.99
11.04
13.14 |
4.86
6.96
9.11
11.16
13.26 |
14 29/32
21 1/2
28 1/4
34 11/16
41 9/32 |
15 9/32
21 7/8
28 5/8
35 1/16
41 21/32 |
14
16
18
20
24 |
15.22
17.32
19.42
21.52
25.72 |
15.35
17.45
19.55
21.65
25.85 |
47 13/16
54 13/32
61
67 19/32
80 13/16 |
48 7/32
54 13/16
61 13/32
68
81 7/32 |
30
36
42
48 |
31.94
38.24
44.44
50.74 |
32.08
38.38
44.58
50.88 |
100 11/32
120 1/8
139 5/8
159 13/32 |
100 25/32
120 9/16
140 1/16
159 27/32 |
54
60
64 |
57.46
61.51
65.57 |
57.60
61.65
65.71 |
180 17/32
193 1/4
206 |
180 31/32
193 11/16
206 7/16 |
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Above table based on ANSI/AWWA C151/A21.51 guidelines for push-on joints |
The Backhoe Method of Assembly
A backhoe may be used to assemble pipe of intermediate and larger sizes. The plain end of the pipe should be carefully guided by hand into the bell of the previously assembled pipe. The bucket of the backhoe may then be used to push the pipe until fully seated. A timber header should be used between the pipe and backhoe to avoid damage to the pipe. | 