Concept on positioning of Columns

1) Symmertry :

Symmertry section are the same which reflects same as the mirror image.

it is obeserved that mass and stifeness are distributed symmetrically.

Redundancy:

The energy dissipation is low 

Bi- Directional stifness

The Horizontal building may not assit the Seismic action in the short direction.

Ductility:

it may not resisit the elastic earth quake in short direction

2Q)

The columns are provided in the building are longer than the below

to avoid that 

The building must be revised

Mass irregularities are avoided by providing light weight concrete .

Structure should be symmentric

The weght from low to top decrease

3Q)

Structure is not symmentric

Larger strength is provided hence low Ductility

In this structure massonary infill in not done properly