What is the compression strength of 3", schedule 40, pipe.?

Question

seamless steel pipe loaded axially.

Answer 1

Include in your calculations that these are conditions for pure axial compression, and don't take into account any possible side loads, reduction in strength for corrosion (why else use stainless?), shock loading, temperature, etc.

Use these figures as a baseline to justify the design, and err on the side of an even more robust design (de-rate the compression strength somewhat).

If there are unforeseen sharp cracks (either from fatigue or from weld/machining/installation defect), and/or there is 'water hammer' shock loading, you might eventually have a failure even though it was designed per spec - it's almost always better to include a safety margin depending on the operating conditions.

Answer 2

Schedule 40 Pipe Strength

Answer 3

Well it depends on many many things. What is the material? Steel, PVC, cast iron, brass? Also how is it to be loaded? You say compression so I assume that you are going to be standing it on end and loading it axially? In this case I'd be more worried about the buckling failure than the compressive failure, especially if it is long. Use Euler's equation for buckling. If you are applying a load to the cross section, then find the hoop strength.
3" pipe 40 schedule is pretty robust.

Answer 4

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Sch. 40 pipe should hold 50 psi but if you need to glue any fittings together you should make sure you are following the manufacturer's specifications if you don't have any experience with it. Compressing air can be dangerous because it is explosive when released all at once, and 50 psi is a lot of pressure. Stay clear of the ends of the pipe or any fittings that could fail and fly off when the pipe is under pressure.

Answer 5

The allowable compressive force on a 3" sch 40 pipe depends on its unbraced length primarily. Using simple end conditions, the AISC steel manual has tables which give allowable loads on this pipe. Some table extracts are:

10' effective length = 28 kips (28,000 pounds)
15' effective length = 14 kips
19' effective length = 9 kips

Anything longer that 19' is too slender per the steel code.

Answer 6

Try this site:
www.usace.army.mil/publications/ armytm/tm5-820-4/a-c.pdf - Similar pages

Answer 7

what is the total ressitance area?

then do it

apply BM too

Answer 8

seems like a good question for yahoo.