modeling 2 towers on the same etabs model
modeling 2 towers on the same etabs model
(OP)
dear all,
can i model 2 towers separated by an expansion joint above the ground floor level but the 2 basements level without jopint. i try to model but i found that the results are strange and espacially in dynamic analysis. what about scaling of results?
thankssssss
can i model 2 towers separated by an expansion joint above the ground floor level but the 2 basements level without jopint. i try to model but i found that the results are strange and espacially in dynamic analysis. what about scaling of results?
thankssssss





RE: modeling 2 towers on the same etabs model
What is strange about the results?
RE: modeling 2 towers on the same etabs model
After your dynamic analysis completed it is expected to get strange results because of your structural shape, in deed your mass source.
You must keep your stiffness matrix as if it is, but for each tower you turn on its mass and turn off the others mass.
Otherwise at each story level program will sum up all masses at that level and calculate mode shapes accordingly.