I-beam made of plates
I-beam made of plates
(OP)
Hi everyone,
I haven´t been able to find a vendor within the USA of structural shapes (I-Beams) in materials such as ASTM A 36 Mod 1, ASTM A 131 GRADES CS, D AND E, or ASTM A633 GR. A.
First question: do you know a vendor of this materials?
Because I havent found those materials, now I want to fabricate the wide flange beams from plates. I might be helpful to tell you that this fabricated beams will be used for the roof structure of a a Refrigerated Tank acording to API 620 apendix R. This means that the operating temperature is around -50° C.
Second Question: do you know a standard, code, manual, web page or something dealing with the procedure for fabricating beams from plates?
Third Question: What type of welding electrodo would be the most appropiate?
Forth question: (and last one), what other provisions should be took?
thanks a lot.
I haven´t been able to find a vendor within the USA of structural shapes (I-Beams) in materials such as ASTM A 36 Mod 1, ASTM A 131 GRADES CS, D AND E, or ASTM A633 GR. A.
First question: do you know a vendor of this materials?
Because I havent found those materials, now I want to fabricate the wide flange beams from plates. I might be helpful to tell you that this fabricated beams will be used for the roof structure of a a Refrigerated Tank acording to API 620 apendix R. This means that the operating temperature is around -50° C.
Second Question: do you know a standard, code, manual, web page or something dealing with the procedure for fabricating beams from plates?
Third Question: What type of welding electrodo would be the most appropiate?
Forth question: (and last one), what other provisions should be took?
thanks a lot.






RE: I-beam made of plates
For wide-flange sections in the U.S., try ASTM A 992 rather than A 36, unless you were specifically counting on the upper limit on tensile strength that A 36 provides. A 992 does provide an upper limit on yield strength. A 992 has become the default material for W-beams for structural use. If you are concerned about toughness at low temperatures, order ASTM A 709 Gr. 50ST to Zone 3 requirements. (Same properties as A 992 but with Charpy testing.) You'd still need to specify the fine grain practice and Mn limits of Mod 1.
The applicable welding code is probably AWS D1.1.
Try starting here:
http:
Hg
Eng-Tips policies: FAQ731-376: Eng-Tips.com Forum Policies
RE: I-beam made of plates
Hi HgTX,
We want to use ASTM A 131 Gr. E for these Built up I beams, because that is one of materials listed in the standar.
For some reason the link didn´t work in my pc.
Greetings.
Chavita
RE: I-beam made of plates
Hg
Eng-Tips policies: FAQ731-376: Eng-Tips.com Forum Policies
RE: I-beam made of plates
RE: I-beam made of plates
As for the cold, I would provide a slip joint connection at one end to allow for thermal contraction in the structure.
Mike McCann
MMC Engineering