Concrete shear wall design Etabs Spreadsheet

[Graceli]

Hi all,

About concrete shear wall design,
normally I first use Etabs to do Shear wall design (uniform reinforcing), to get the critical load combinations.
Then I put the P V M into the shear wall design spreadsheet to design this shear wall.

My questions:
1. Is this method OK?
2. Why the load combinations in Boundary Element check in Etabs are not always the worst load combinations?
3. If we don't use Etabs, how to find the worst load combinations?

I really appreciate for any reply.

Grace

 

[johnbridge231]

1. That method is of course ok and maybe the best one, as you will be able to totally control the calculations.

2. I think is does, can you give an example?

3. This is someway hard, as the worst load combination is the one that results into the greatest reinforcement amount. Your spreadsheet, or external app or whatever should plot an interaction diagram for the wall section, and loop through each design combination in order to calculate the required reinforcement. The combination that demands the greatest reinforcement is the critical one.


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

 

[Graceli]

Thank you very much, johnbridge231.

 

[johnbridge231]

You are most welcome.


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

 

[asixth]

That's normally how I design walls when I use ETAB's for the analysis. Shear strength calculations are normally straight forward and then I have an spreadsheet that generates an interaction diagram for bending and axial forces.

 

[johnbridge231]

correct. Interaction diagrams can be produced simply by using third party software as well.

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