TORSIONAL EFFECT IN SECOND MODE
TORSIONAL EFFECT IN SECOND MODE
(OP)
Hello guys !!!
I have modeled and analysed a single story RCC building in ETABS and I found that the building have torsional effect in second mode. Is there any remedial measure to counter this effect in designing phase or in construction phase ?
I have modeled and analysed a single story RCC building in ETABS and I found that the building have torsional effect in second mode. Is there any remedial measure to counter this effect in designing phase or in construction phase ?






RE: TORSIONAL EFFECT IN SECOND MODE
Make it hard for the building to twist, distribute lateral elements towards the perimeter of the building.
RE: TORSIONAL EFFECT IN SECOND MODE
RE: TORSIONAL EFFECT IN SECOND MODE
Also, I'd say it is as important to increase the torsional STIFFNESS of the system as it is to have that center of stiffness match up with the center of mass. Meaning if your lateral frames are wider apart then your torsional modes should be at a higher frequency.
RE: TORSIONAL EFFECT IN SECOND MODE
Dear JoshPlum, mass participation in second mode is 20%, I think it is quite appropriate. I am planing to provide shear wall of some length around the outer far end columns, so that it can help to reduce the torsional effect.