Steel Pipe Grade and Strength
Steel Pipe Grade and Strength
(OP)
I have a project where I am re-analyzing a previous cell phone tower for additional antennas. In the previous calculations, it specifies steel pipe legs (PIPE 2.875 od x 0.203w) but calls them out at "A53 GR. B (46 ksi minimum)".
I know standard steel pipes are 35 ksi, has anyone seen 46 ksi steel pipe before? My assumption is that they had just mis-typed it in the calculations.
Please, let me know if you have seen 46ksi steel pipes before, thanks.
I know standard steel pipes are 35 ksi, has anyone seen 46 ksi steel pipe before? My assumption is that they had just mis-typed it in the calculations.
Please, let me know if you have seen 46ksi steel pipes before, thanks.





RE: Steel Pipe Grade and Strength
46 ksi doesn't sound right to me under A53 grade B.
RE: Steel Pipe Grade and Strength
It would have to be A500 Grade C to be 46 ksi pipe.
Sounds like a typo. So, the question is then, what do you have? Bay need to take a sample and do some testing here if there is no other information.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Steel Pipe Grade and Strength
Garth Dreger PE
AZ Phoenix area
RE: Steel Pipe Grade and Strength
Comparing the allowable values, it seems as if they were designing for 46 ksi steel. It just confusing because the leg member size is called out as "PIPE 2.875 od x 0.203w", therefore it is not an HSS member meaning it shouldn't be 46ksi though, right?
RE: Steel Pipe Grade and Strength
Have you seen the tower or looked at pictures of it, to see if pipes were used?
You may also want to have the pipe sizes checked. As there may have been a changed order during construction for larger size 36 ksi pipes to be used.
Garth Dreger PE
AZ Phoenix area
RE: Steel Pipe Grade and Strength
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Steel Pipe Grade and Strength
You could always have a sample tested.