Conceptual design of a building with columns and shear walls

01Q:

As the structure is more restrained it will be more shrinking, expanding and cracking.

There will be more floor shrinkage and expanding in structure A whereas there will be minimum cracks in structure B and C.

The shear walls in the structure also decide whether the floor vibration is more or less in the structure it will be better placing a column at the corners.So that it will reduce the cracks instead of having a shear walls at the corner in the structure.

The Torsion in the structure C is more when compared to structure A and B because in the structure C there will be an eccentricity.

The redundancy in structure A and B is more when compared to structure C because there will be an eccentricity in structure C in the left side where the length of the wall 10 meters which cannot carry load equally in either direction.

For Lateral stiffness structure C is more laterally stiff when compared to the structure A and structure B because there will be an eccentricity in structure C in the left side where the length of the wall 10 meters which cannot carry load equally in either direction.

02Q:

There is atwo way eccentricity in the frame along X direction & Y direction also with stiffness the eccentricity in X directionis larger when compared to Y direction.

There is only two continues frame in the structure that is B1 & B2 in the X direction & B9,B10, B11 & B12 in the Y direction & all the other beams are broken at the midway in the frame.

There will be torsional flexibility in the structure.To avoid torsional restraints it is better to make the room dimensions even in both X & Y direction & placing the columns at the junction of two wall if it is feasible better to provide shear wall at appropriate location.

The fundamental translation mode of vibration is larger than the fundamental torsional mode of vibration

03Q:

The above plan that is given is totaly unsuitable for normal areas & also in earthquake prone area.

In seismic region the lateral & vertical loads play important criteria because it helps in resrting the failure against 

the earthquake as the loads. Resultant will not co inside with the center of the structure it becomes eccentric & not suitable for any type of areas.

In the plan a flat slab is more appropriate than a regular beam column junction as it provides support to the columns without any provision of the beam which reduces the weight of the building & also helps in the ductility which indirectly helps to maintain the structure in the earthquake prone areas.

Apart from flab slab a wooden structure is also appropiate which reduces the weight of the building & also helps to maintain the structure in the earthquake prone areas.