Kindly guide me how we can build a pre engineering beam as composite beam in stad pro?
A composite beam in STAAD is always made up of a steel beam with a concrete slab or deck on top. What you are looking for is possibly built up tapered beams constructed by welding plates. You may use the Tapered I option ( Properties - Whole Structure > Define > Tapered I ) for that.
I got it, sir.I did the same by using tapered beam option.but as for the hot-rolled section we get the composite section. For a built-up beam how we can make it composite?