Page 160 - GRINNELL Mechanical Products Catalogue

pRESSuRE & DESiGN DATA
Pipe Support
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:
1-1⁄4 7 12222344 1-1⁄2 7
Rigid Joints
For pipe runs with rigid couplings:
Pipe Size Inches mm
Suggested Maximum Span Between Supports – Feet/metres
Water Service
Air Service
I
II
I
II
42.4
2.1
3.4
2.7
3.4
Pipe Size mm Inches
3.3
Pipe Length in Metres Feet
6.7
22234456
11 12 13 14 14 15 17 19 20 20 21 21 21 21 21 21 21 21
9 11
9 13 13 15 14 16 14 16 15 17 17 21 20 24 21 25 21 25 24 28 24 31 30 33 30 33 35 33 35 33 39 33
42 33
1-1⁄4 - 2
73.0 – 114.3
2-1⁄2 - 4
141.3 – 609.6
5 - 24
For pipe runs when linear movement is not required:
1-1⁄4 - 1-1⁄2 12 2 - 8 15
10 - 12 16 14 - 16 18 18 - 24 20
Note: The requirements of ANSI, ASME or other code groups may require additional supports.
48.3
2.1
3.7
2.7
4.0
60.3
3.0
4.0
4.0
4.6
11222333
2 10 2 -1 ⁄ 2 11 – 11 3 12 4 14 5 16 – 17 6 17 8 19 10 19 12 23 14 23 16 27 18 27 20 30 24 32
73.0
3.4
4.3
4.3
4.9
76.1mm
3.4
4.3
4.3
4.9
88.9
3.7
4.6
4.6
5.2
114.3
4.3
5.2
5.2
6.4
Distance Between Supports
Nominal Size mm Inches
Maximum Distance Between Supports Metres
Feet
42.4 - 48.3
3.7
141.3
4.9
5.8
6.1
7.3
165.1mm
5.2
6.1
6.4
7.6
168.3
5.2
6.1
6.4
7.6
60.3 - 219.1
4.6
219.1
5.8
6.4
7.3
8.5
273.0 - 323.9
4.9
273.0
5.8
6.4
7.3
9.4
355.6 - 406.4
5.5
323.9
7.0
6.4
9.1
10.1
457.2 - 609.6
6.1
355.6
7.0
6.4
9.1
10.1
406.4
8.2
6.4
10.7
10.1
457.2
8.2
6.4
10.7
10.1
508.0
9.1
6.4
11.9
10.1
609.6
9.8
6.4
12.8
10.1
160
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Number of Hangers Per Pipe Length
10
3.7
12
4.6
15
22
Average Number of Hangers Per Pipe Length
7.6
25
9.1
30
10.7
35
12.2
40
42.4 – 60.3
Design Data