Recent content by Andy49

Gasket manufacturers such as Garlock and Flexitallic have recommended torque tables on their web sites which includes the information whether the bolts are dry, lubricated etc. I would follow those guidelines.

Thanks.

Thanks for taking interest in this. Let's assume the worst case that it is filled with water at 1000 psig.

A buried pipe will have a 90deg. bend and a riser coming out of the ground. The steel pipe size can vary (6"-24") and will be buried up to 48" below grade. It needs to have a concrete pad under the 90 deg. bend. I would like to know how I would calculate the dimension of the pad and whether the...

Thanks. That really helped. A follow up question, the same paragraph 8.1 further states that "For bends from welded pipe of NPS 8 (DN 200) or larger, a transverse weld tensile in the final heat-treat condition shall be conducted to determine the ultimate tensile strength. See para. 11.1.1 for...

If the yield test(y psi)of the induction bend is lower than the mother pipe(Y psi ), My understanding from ASME B16.49-2007 is that the paragraph 8.1 allows the following procedure. 1 Take the wall thickness of the pipe to which the bend connects (.x inch) 2 Divide the tested yield of the bend...

Thanks. Its clear now.

"all specimens shall exhibit a minimum absorbed energy value of 27 J (20 ft-lbf) for Grade P386 (X386) and lower, and a minimum of 54 J (40 ft-lbf) for grades higher than P386 (X386). Weld metal shall meet an absorbed energy value of 27 J (20 ft-lbf) minimum for all grades" Dear All, The above...

It looks like the paper on Drop Weight Test in not in the public domain and is only available through the Journal subscription.

I will go through the paper to gain more knowledge about the subject and some of the other papers I have found. Its been many decades since I took the materials science course in my sophomore year. I do find it more interesting now.

Would APL 5L PSL2 apply here? That requires higher velues.

Thanks for the replies. I am looking for some concrete spec that includes testing requirements and acceptable values for the test performed that will be in compliance with DOT 195 and other codes that apply to 10" pipeline bends.

I have seen % shear requirements from 50%, 75% to 85% depending on the code (API, ASTM etc.) and some of the technical papers and vendor specs. The test would be conducted at 32F. So I am confused as to which values are acceptable. The test piece would be from a weld in the tangent area.

Thanks. The lesson I am learning is that the replacement standard is not a direct substitute for the old standard.

Thanks TXStructural, You are correct, this spec I am looking at was written a long time ago. It is used for fabricating pipe anchors. I have attached the pdf file. http://files.engineering.com/getfile.aspx?folder=c9dc21a9-467a-4591-8bad-96956a358b51&file=Anchor1.pdf