HSS ROLLED TO A RADIUS
HSS ROLLED TO A RADIUS
(OP)
I have some pretty healthy tube sections (20x8x1/2) for a canopy roof. The architects desire to make the roof curved. Are there any references out there that recommended the tightest radius that the tubes can be rolled too. I am assuming they roll them in a similar way they camber a beam and heat up portions of the tube.
Thanks in advance for any help!
Thanks in advance for any help!






RE: HSS ROLLED TO A RADIUS
There are a number of steel fab. companies doing this kind of bending. Get in touch with a couple of them, and given your approx. member size and geometry, ask them what they can do. Your initial design and analysis hones in on the member size, then the issue becomes can they do that bend length, radius, etc. without buckling and deformation problems in the final members. The companies with experience can do some amazing things with steel members. Look in the steel mags. for ads by stl. bending folks, talk to your local fab’er. about who they would go to, call AISC for a list of stl. bending members.
RE: HSS ROLLED TO A RADIUS
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: HSS ROLLED TO A RADIUS
Thanks for the input, thought I would pass along the information I was able to gain on the subject matter. Good day!
RE: HSS ROLLED TO A RADIUS
Thanks for the update. We all appreciate the fact that you took the time to come back and let us know what the outcome was, after we spent our time trying to be helpful. This kind of exchange and update is part of what makes E-Tips work so well, and be so successful in helping engineers, help other engineers. Sometimes we are left with the conclusion that after posting and getting a half dozen meaningful responses, the OP’er. must have changed professions and become a beautician or something else unrelated to engineering, because we never hear from them again.
RE: HSS ROLLED TO A RADIUS
You MUST also tell the fab shop the direction of the roll: easy way (rolling the short side or short web) or hard way (rolling the longer web or longer side. They should ask. But they may assume you know they cannot roll a 20 inch web, but can do a 4 inch web or height.
RE: HSS ROLLED TO A RADIUS
RE: HSS ROLLED TO A RADIUS
Thanks for the picture (they really are worth 1,000 words sometimes. This is similar to what I have going on with my canopy (radius members with members cantilevering).