Metal Expansion Joint
 
 
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Offset Chart 
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To determine required live length of an application, find the specific bend radius from the data sheets(Product Specifications). Now locate that bend raidus on the chart below. Then, from the offset(Y) across the top of the chart, locate the amount of offset in inches. Read down to the bend radius row and the figure will be in the live length required. For the intermittent flexing, the offset motion should never be greater than 25% of the centerline bend radius. Should the offset exceed 25% use a loop.

BEND
RADIUS
 
Offset Y (inches)
 
0.25
0.50
0.75
1.0
1.25
1.50
2.0
2.50
3.00
4.00
5.00
6.00
8.00
10.00
12.00
0.50
0.9
1.3
1.7
2.0
2.3
2.6
3.2
3.7
4.2
5.3
6.3
7.3
9.4
11.4
13.4
1
1.3
1.8
2.3
2.6
3.0
3.4
4.0
4.6
5.2
6.3
7.4
8.5
10.6
12.6
14.7
2
1.8
2.5
3.1
3.6
4.1
4.5
5.3
6.0
6.7
8.0
9.2
10.6
12.6
14.8
17.0
3
2.1
3.0
3.8
4.4
4.9
5.4
6.3
7.2
7.9
9.4
10.7
12.0
14.4
16.7
19.0
4
2.5
3.5
4.3
5.0
5.6
6.2
7.2
8.1
9.0
10.6
12.0
13.4
16.0
18.4
20.8
5
2.8
3.9
4.8
5.6
6.3
6.9
8.0
9.0
9.9
11.7
13.2
14.7
17.4
20.0
22.4
6
3.0
4.3
5.3
6.1
6.8
7.5
8.7
9.8
10.8
12.6
14.3
15.9
18.8
21.4
24.0
7
3.3
4.6
5.7
6.6
7.4
8.1
9.4
10.5
11.6
13.6
15.3
17.0
20.0
22.8
25.5
8
3.5
4.9
6.0
7.0
7.8
8.6
10.0
11.2
12.4
14.4
16.3
18.0
21.2
24.1
26.8
9
3.7
5.2
6.4
7.4
8.3
9.1
10.6
11.9
13.1
15.2
17.2
19.0
22.3
25.3
28.1
10
3.9
5.5
6.8
7.8
8.8
9.6
11.1
12.5
13.7
16.0
18.0
19.9
23.3
26.5
29.4
12
4.3
6.0
7.4
8.5
9.6
10.5
12.2
13.6
15.0
17.4
19.6
21.6
25.3
28.6
31.7
14
4.6
6.5
8.0
9.2
10.3
11.3
13.1
14.7
16.2
18.8
21.1
23.2
27.1
30.7
33.9
16
4.9
6.9
8.5
9.8
11.0
12.1
14.0
15.7
17.2
20.0
22.5
24.7
28.8
32.6
36.0
18
5.2
7.4
9.0
10.4
11.7
12.8
14.8
16.6
18.2
21.2
23.8
26.2
30.5
34.4
37.9
20
5.5
7.8
9.5
11.0
12.3
13.5
15.6
17.5
19.2
22.3
25.0
27.5
32.0
36.1
39.8
22
5.8
8.1
10.0
11.5
12.9
14.2
16.4
18.3
20.1
23.3
26.2
28.8
33.5
37.7
41.6
24
6.0
8.5
10.4
12.0
13.5
14.8
17.1
19.1
21.0
24.3
27.3
30.0
34.9
39.2
43.3
26
6.3
8.8
10.8
12.5
14.0
15.4
17.8
19.9
21.8
25.3
28.4
31.2
36.2
40.7
44.9
28
6.5
9.2
11.3
13.0
14.5
15.9
18.4
20.6
22.6
26.2
29.4
32.3
37.5
42.2
46.5
30
6.7
9.5
11.6
13.5
15.1
16.5
19.1
21.4
23.4
27.1
30.4
33.4
38.8
43.6
48.0
35
7.3
10.3
12.6
14.5
16.3
17.8
20.6
23.0
25.3
29.3
32.8
36.0
41.8
46.9
51.6
40
7.8
11.0
13.4
15.5
17.4
19.0
22.0
24.6
27.0
31.2
35.0
38.4
44.5
50.0
55.0
45
8.2
11.6
14.3
16.5
18.4
20.2
23.3
26.1
28.6
33.1
37.1
40.7
47.2
52.9
58.2
50
8.7
12.3
15.0
17.3
19.4
21.3
24.6
27.5
30.1
34.9
39.1
42.8
49.6
55.7
61.2
55
9.1
12.9
15.8
18.2
20.3
22.3
25.8
28.8
31.6
36.6
40.9
44.9
52.0
58.3
64.1
60
9.5
13.4
16.4
19.0
21.3
23.3
26.9
30.1
33.0
38.2
42.7
46.9
54.3
60.8
66.8

 
   




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