Conceptual design of a building with columns and shear walls

1.

S.No.	Criteria	fig.1	fig.2	fig.3
1.	Restraint of floor shirnkage	Full restraints at all corners	Corners are left free but restraints along the edge	Non-uniform restraints
2.	The lateral stiffness	Comparatively lower stiffness in both X and Y	Uniform and comparatively higher lateral stiffness in both X and Y	Non uiformal leteral stiffness in both X and Y
X	Torsion with respect to vertical axis	Corner walls provide more resistance to twist	Edge walls provide good resistance to twist	Irregular walls provide very poor resistance to twist
4.	Vertical reinforcement for similar base capacity	Walls are subjected to nominal flexural moment and heavy twisting moment	Walls are subjected to nominal twisting moment	Walls are subjected to heavy flexural moment and twisting moment
5.	Static eccentricity	Structurally symmetric	Structurally symmetric	Un-symmetric
6.	System's redundancy	Uniform placement of lateral load support in both the axes	Uniform placement of lateral load support in both the axes	Concentrated lateral load supports in both the axes
7.	Foundation systems	Due to 'L' shaped walls,the geomenter of foundation and its design will be critical	Walls are in line.Easy to fix the geometry and design of foundation	Walls are in line and concentrated.Easy to fix the geometry of foundation but critical in design
8.	Architectural constraints	Walls obstruct only corners	Walls obstruct the faces of building	Vertical wall will noy allow passage

2.

Indirect lateral load transfer in X and Y directions:

The beams are connecting to another beams which is ineffective during lateral load transfer. In such conditions, the primery beam is prone to shear failure.

Ecenticity- the longer the distance between center of mass and center of stiffness, the hogher torsional moment of the building.as per the given plan ecentricity, the building is subjected to higher trosionalmoment (torsional flexibility )in both X and Y direcation.

Strong beam weak column possibilty:

The size of columns majorly mentioned as 25*25 cm but all the beams have much deeper section 50 cm. Inertia of beamis vaisally higher than coulmn .If the column reinforcmet is adequatelty greter than that beam we are okay and sinces we do not have the rainforcement detail this is doubtful its recommended to have slight bigger size for column.

3.

Floor plan:

The floor plan of the building is not either unifrom or symmentric so naturally any lateralload induced in the floor will not have 100% influenece in same direcation. difenitley a speecial lateral load resisting system for these torsionalmoments should be accommodated.

Random intrnal column:

Since the intrnal coulmn are randomly they are unable to transfer latderal loade efficentlyand can notacchived desirable building responces. So we have to assum and design those column for only gravity loads.

Floor to Floor varriation in partition wall and beam:

Partion wall provied an importance mass control in a building and beam play key role an shear transfer floor to beam.all this elemnts are not inoder.so heavy distrition and distributionof lateral lods will happen.