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Recommended Operating Ratings
<br /> Axial Tensile Loads Axial Compressive Banding Parallel Plate Loading
<br /> Max. (Lbs) Loads Max. (Lbs) ', Radius Min. Torque Max. ASTM D2412
<br /> (Ft) Entire (Ft Lbs) StIllftess; Pipe ..
<br /> Size Temperature Temperature Temp. Entire Temp. Factor Stiff ness Modulus
<br /> 0.
<br /> 2 1,280 930 4,160 2,420 51 90 71 311 2.6
<br /> 3 2,601 1,887 8,408 4,900 76 270 174 226 2.6
<br /> 4 3,110 2.260 10,070 5,860 97 420 142 86 2.6
<br /> 6 6,230 4,520 20,140 11,730 142 1,200 443 85 2.6
<br /> 8 8,570 6,220 27,720 16.150 183 2,200 569 49 2.6
<br /> 10 13,930 10,110 45,030 26,230 227 4,450 955 44 2.6
<br /> 12 19,050 13.820 61.600 35.890 269 7,250 1,460 40 2.6
<br /> 14 27,160 19,710 87,830 51,160 308 11,800 2,810 52 2.6
<br /> 16 35,020 25.410 113,220 65,960 352 17,400 4,030 50 2.6
<br /> 18 40,990 29,750 132,530 77,210 391 22,700 4,750 43 2.6
<br /> 20 46,350 33,630 149.850 87,300 433 28,500 4,960 32 2.6
<br /> 24 64,110 46,530 207,290 120,760 520 47,400 7,430 28 2.6
<br /> "Compressive loads are for short columns only.
<br /> SUPPORTS
<br /> Proper pipe support spacing depends on the temperature 6. Avoid excessive vertical loading to minimize bending
<br /> and weight of the fluid in the pipe. The support spacing table is stresses on pipe and fittings.
<br /> based on unrestrained continuous beam theory using the pipe 7. Provide adequate axial and lateral restraint to ensure line
<br /> bending modulus derived from long-term beam bending tests.The stability during rapid changes in flow.
<br /> maximum spans lengths were developed to ensure a design that
<br /> limits mid-span deflection to'/2 inch and dead weight bending to lia Maximum Support Spacing for Uninsulated Pipe
<br /> of the ultimate bending stress.Any additional loads on the piping
<br /> system such as insulation, wind, seismic, etc. requires further
<br /> consideration. Restrained (anchored) piping systems operating at
<br /> elevated temperatures may result in guide spacing requirements 2 12.6 12.0 11.4 19.1
<br /> that are shorter than unrestrained piping systems. In this case,the 3 15.0 13.5 12.6 22.1
<br /> maximum guide spacing governs the support span requirements
<br /> for the system. Pipe spans near elbows require special attention. 4 15.9 15.1 14.3 25.2
<br /> Both supported and unsupported elbows are considered in the 6 19.2 18.3 17.3 30.8
<br /> following tables and must be followed to properly design the piping 8 21.1 20.0 19.0 35.0
<br /> 10 23.2 22.0 20.9 38.9
<br /> system.
<br /> There are seven basic rules to follow when designing piping 12 25.1 23.9 22.6 42.4
<br /> 14 27.4 26.0 24.7 45.3
<br /> system supports:
<br /> 16 29.2 27.7 26.3 I 48.4
<br /> 1. Do not exceed the recommended support span. 18 30.4 28.9 27.4 51.1
<br /> 2. Support heavy valves and in-line equipment independently. 20 31.4 29.8 28.3 53.9
<br /> 3. Protect pipe from external abrasion at supports. 24 34.1 32.4 30.7 59.0
<br /> 4. Avoid point Contact loads. °Consult factory for insulated pipe support spacing.
<br /> p 2 Maximum mid-span deflection? with a specific gravity of 1.0.
<br /> 5. Avoid excessive bending. This applies to handling.
<br /> transporting.initial layout,and final installed position.
<br /> 5
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