Base shear on ETABS 6

[Basabesa]

Hello

I used etabs in my M.Sc. research to analyze different heights of buildings subjected to wind load.
The problem is, after analysis, the base shear for a 20-storey building is the same with or without shear wall. even when I change the shear wall thickness, it's still the same.
I know there is something wrong but I don't know what is it, maybe the model itself. Please answer my question ASAP I really don't have much time left......

 

[slickdeals]

Base shear for wind loads is not dependent on the stiffness/time period of the building. Base shear is just the summation of the forces at the base and it won't change whether you have a shear wall or a moment frame.

In a seismic situation, a stiffer building (shear wall) will have lower time period and hence, higher forces. So you may see higher base shear in a building with a shear wall.

 

[Basabesa]

Thanks Slickdeals for your reply , i appreciate your help.

In your opinion by using ETABS what are the parameters i need to focus on to show the efficiency/strength of the shear wall? (my research about different location of shear wall)

what i know so far only the Top Displacement so what else i should take into consideration ?

 

[structSU10]

The only other difference that may occur with wind base shear is due to the G factor in ASCE 7. This is a frequency based calculation, and may have small effects, but only if the structure is flexible, ie f < 1Hz.

 

[johnbridge231]

It is just a matter of equilibrium, the resultant horizontal force due to wind result into an equal reaction in the same directory.

Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis

http://www.engissol.com/cross-section-analysis-design.html