71corvette
Structural
- Feb 26, 2003
- 105
Hi All,
AASHTO's "Guide specification for highway bridge fabrication with HPS 70W Steel", 2nd edition, Section 4.02 states the following:
"Only fabricators meeting the requirements of hte AISC Quality Certification Program, Major Steel Bridges (Cbr) with Fracture Critical Endorsment (F), or Engineer-approved equal, may fabricate with HPS 70W steel."
Can someone shed some light the the need for the "Fracture Critical Endorsement" for fabrcation with HPS 70W? I can understand the Cbr requirement, but I'm not quite clear as to why all fabricators are required to hold a fracture critical endorsement.
Also, do these same requirements apply to fabrication with HPS 50W steel?
Thanks,
Tim
AASHTO's "Guide specification for highway bridge fabrication with HPS 70W Steel", 2nd edition, Section 4.02 states the following:
"Only fabricators meeting the requirements of hte AISC Quality Certification Program, Major Steel Bridges (Cbr) with Fracture Critical Endorsment (F), or Engineer-approved equal, may fabricate with HPS 70W steel."
Can someone shed some light the the need for the "Fracture Critical Endorsement" for fabrcation with HPS 70W? I can understand the Cbr requirement, but I'm not quite clear as to why all fabricators are required to hold a fracture critical endorsement.
Also, do these same requirements apply to fabrication with HPS 50W steel?
Thanks,
Tim