Page 136 - GRINNELL Mechanical Grooved Piping Products EMEA

Grooved Couplings
Pressure and Design Data
Pipe Support
Tech Data Sheets: G810, G820, G830
All piping systems require that the support system accommodate the weight of the pipe, joint connections, fluid, and other system components. In addition, consideration may be necessary in reducing stresses, accommodating thermal expansion or contraction, building settlement, seismic movement, etc. The following tables provide guidelines for grooved steel piping products without concentrated loads between supports.
Flexible Joints
For pipe runs when linear movement is accommodated by the flexible coupling:
22234456
Rigid Joints
For pipe runs with rigid couplings:
1 1.315 7 9 11⁄4 1.660 7 11 11⁄2 1.900 7 12
2 2.375 10 13 21⁄2 2.875 11 14 76.1mm 3.000 11 14 3 3.500 12 15 4 4.500 14 17 133.0mm 5.236 16 19 139.7mm 5.500 15 18 5 5.563 16 19 165.1mm 6.500 17 20 6 6.625 17 20 8 8.625 19 21 10 10.750 19 21 12 12.750 23 21 14 14.000 23 21 16 16.000 27 21 18 18.000 27 21 20 20.000 30 21 24 24.000 32 21
12 9 2.7 12 12 9 3.4 12 15 9 4.0 15 15 13 4.6 15 15 14 4.9 15 15 14 4.9 15 15 15 5.2 15 15 17 6.4 15 15 20 7.3 15 15 19 7 15 15 20 7.3 15 15 21 7.6 15 15 21 7.6 15 15 24 8.5 15 15 24 9.4 15 15 30 10.1 15 15 30 10.1 15 15 35 10.1 15 15 35 10.1 15 15 39 10.1 15 15 42 10.1 15
Pipe Size
Suggested Maximum Span Between Supports – Metres Feet
Nominal DN In.
O.D. mm In.
Water Service
Air Service
I
II
III
I
II
III
25
33.4
2.1
2.7
3.7
2.7
9
3.7
Number of Hangers Per Pipe Length
Pipe Size mm Inches
Pipe Length in Metres Feet
10
12
15
22
25
30
35
40
3.3
3.7
4.6
6.7
7.6
9.1
10.7
12.2
Average Number of Hangers Per Pipe Length
42.4 – 60.3
11⁄4 - 2
73.0 – 114.3 1 2 2 2 2 3 4 4
32
42.4
2.1
3.4
3.7
2.7
11
3.7
21⁄2 - 4 5 - 24
11222333
40
48.3
2.1
3.7
4.6
2.7
13
4.6
141.3 – 609.6
50
60.3
3.0
4.0
4.6
4.0
15
4.6
65
73.0
3.4
4.3
4.6
4.3
16
4.6
For pipe runs when linear movement is not required:
11⁄4 - 11⁄2 12 2 - 8 15
10 - 12
14 - 16 18 18 - 24 20
Note: The requirements of ANSI, ASME or other code groups may require additional supports.
65
76.1
3.4
4.3
4.6
4.3
16
4.6
Distance Between Supports
Nominal Size mm Inches
Maximum Distance Between Supports Metres
Feet
42.4 - 48.3
3.7
80
88.9
3.7
4.6
4.6
4.6
17
4.6
100
114.3
4.3
5.2
4.6
5.2
21
4.6
125
133.0
4.9
5.8
4.6
6.1
24
4.6
60.3 - 219.1
4.6
125
139.7
4.6
5.5
4.6
5.2
23
4.6
273.0 - 323.9
4.9
125
141.3
4.9
5.8
4.6
6.1
24
4.6
16
150
165.1
5.2
6.1
4.6
6.4
25
4.6
355.6 - 406.4
5.5
150
168.3
5.2
6.1
4.6
6.4
25
4.6
457.2 - 609.6
6.1
200
219.1
5.8
6.4
4.6
7.3
28
4.6
250
273.0
5.8
6.4
4.6
7.3
31
4.6
300
323.9
7
6.4
4.6
9.1
33
4.6
350
355.6
7
6.4
4.6
9.1
33
4.6
400
406.4
8.2
6.4
4.6
10.7
33
4.6
450
457.2
8.2
6.4
4.6
10.7
33
4.6
500
508.0
9.1
6.4
4.6
11.9
33
4.6
600
609.6
9.8
6.4
4.6
12.8
33
4.6
136
I - Spacing by ANSI B31.1 Power Piping Code
II - Spacing by ANSI B39.1 Building Piping Code
III - Spacing by NFPA 13 Sprinkler Systems (Steel Pipe except
Threaded Lightwall)