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API RP 1102 Calculations too High?

API RP 1102 Calculations too High?

API RP 1102 Calculations too High?

For my structural loading path class, I have been tasked with presenting a design for an oil pipeline for our class to discuss.

I have been using the API RP 1102 for the codes but all my values come out way too high to make sense. I have currently only attempted calculations for the buried part, and honestly about to just throw the whole code away and just use actual calculations. They would prefer if I can use the code though.

Let me know if you have any insight!

RE: API RP 1102 Calculations too High?

What do you mean, values are too high?
Do they exceed allowable stress? They look low to me.
At 6 ft of cover, there shouldn't be any overstress to pipe, unless really thin walled, or being operated at a very high pressure.

RE: API RP 1102 Calculations too High?

Also, what kind of pipeline are you designing? Your inputs don't make sense. 3" wall thickness???? Ductile iron???

Have you read about the DAPL? If I recall correctly, the main line is 30" diameter, API 5L X70 steel pipe, up 0.625" wall thickness.

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