50 ksi W-shapes
50 ksi W-shapes
(OP)
I am working on an existing structure with no structural drawings to be found on file.
What year did 50 ksi steel W-shapes become widely accessible and required? Also, does anyone know of a cheap standard test that can determine if an in-place W-shape is 36 or 50 ksi?
Thank You,
MLM
What year did 50 ksi steel W-shapes become widely accessible and required? Also, does anyone know of a cheap standard test that can determine if an in-place W-shape is 36 or 50 ksi?
Thank You,
MLM






RE: 50 ksi W-shapes
RE: 50 ksi W-shapes
Do you know the year the building was built? If it was built before 1994, I would definately assume 36 ksi. If it was built in 2000 or later, I would assume 50 ksi. If between 1994 and 2000, it might be either, but I would assume 36 ksi to be safe.
I do not know of a non-destructive test for this either, but if you really want to know, there are surely places on a building you can take a sample cuopon of material from and test it. Places might be flanges at ends of beam where the moment capacity is not longer required, very tops of column flanges above the last framed in roof member, etc.
RE: 50 ksi W-shapes
A co-worker just handed me a print out from the Steel Solution Center. It states that 1997 was the year AISC released 'Technical Bulletin No. 3' which provided the requirements for ASTM A572 grade 50 steel. The effect of the bulletion was ' to create an early version of ASTM A992, which was released in 2000'.
RE: 50 ksi W-shapes
RE: 50 ksi W-shapes
RE: 50 ksi W-shapes
RE: 50 ksi W-shapes
RE: 50 ksi W-shapes
RE: 50 ksi W-shapes
MLM
RE: 50 ksi W-shapes
Regards,
-Mike
RE: 50 ksi W-shapes
The link didn't come through!
Yogi Anand, D.Eng, P.E.
Energy Efficient Building Network LLC
ANAND Enterprises LLC
http://www.energyefficientbuild.com
RE: 50 ksi W-shapes
http:/www.ry
-Mike