Plate formed section instead of rolled section
Plate formed section instead of rolled section
(OP)
Dear all,
we are using UB 203x133x30 section size for our supporting beam of s355jo material,
due to non-availability section, our shop is asking for the deviation to make the
ub section size using plates of s355jo material for the same thickness and size as specified for UB section.
can we use plate formed section instead of rolled section? we are using is:800 code for designing the beam
is this affect the strength of the beam member we are using. How to calculate the reduced strength?
Thanks
senthil
we are using UB 203x133x30 section size for our supporting beam of s355jo material,
due to non-availability section, our shop is asking for the deviation to make the
ub section size using plates of s355jo material for the same thickness and size as specified for UB section.
can we use plate formed section instead of rolled section? we are using is:800 code for designing the beam
is this affect the strength of the beam member we are using. How to calculate the reduced strength?
Thanks
senthil






RE: Plate formed section instead of rolled section
RE: Plate formed section instead of rolled section
http://www.nitsri.net/civil/course-material/IS%208...
It seems major effect in design is through classification of the section as more or less slender and maybe assignation of typified residual stress (I have not direct knowledge of IS), what depends on if rolled or built-up.
RE: Plate formed section instead of rolled section
Building up from a plate sections is possible, but takes man-power/foot much more dollars.
If you do build it up, make sure your jigs and fixtures are very rigid against movement: alignment of the webs and flanges is essential - in most cases easier to screw up than the welds even - if you are to get the same strength. That is, even a intermittent fillet weld will likely be strong enough, but an uneven or twisted flange is deadly.