Analysis & Design of RCC shear walls in the model using ETABS

AIM

The  file for a G+6 building is provided. Run the analysis and design the RCC shear walls (show in the etabs model). The following challenge deals specifically with the shear wall of size 300x1500 at grid A-11 in the structural model.

• Extract values of longitudinal steel ratio, boundary element length and shear reinforcing ratio from the design results.
• Provide cross sectional steel arrangement of the shear wall from its base up to terrace, in compliance with provisions of IS 13920 – 2016. AutoCAD application can be used for this exercise. Alternatively, it can be drawn by hand as well.
• Provide elevation drawings of the reinforcement details of the shear wall from base up to terrace.

INTRODUCTION

ETABS is an engineering software that is used for multi-story building analysis and design. Modeling tools and templates, code-based load prescriptions, analysis methods and solution techniques, all coordinate with the grid-like geometry unique to this class of structure.

Here we are analysing a given structure and detailed drawing of the shear wall is drawn using AutoCAD.

We provide longitudinal and shear reinforcement according to the results from the ETABs analysing

PROCEDURE

Step 1:Open the given file

Step 2:Set it ot the plan view

           Set terrace level

Step 3:Select the shear wall of the grid A-11

Step 4:Right click and select show selected objects only

Step 5:Click on Run Anaysis

           Set elevation

Step 6:Click on shear wall design

           Select pier longitudinal reinforcement(vertical reinforcement)

Step 7:Click on shear wall design

           Select Display Design Info

           Select Pier shear reinforcement(horizontal reinforcement)

Step 8:Click on shear wall design

           Select Display Design Info

           Select Pier edge/boundary zone widths

Step 9:Select story details

Detailing guideline for Shear wall

RESULTS

Initially open the given ETABS file.

Check for errors was done next by selecting Check Model under Analysis menu.

Click on Analyse tab and select Run Analysis to perform the analysis function.

To view the selected design results Click on Design followed by Shear Wall Design and then select Display Design info.

Now from the dialogue box which appears select the required ones like Pier Longitudinal Ratio, Pier Reinforcement Ratio, Pier Shear Reinforcement and Pear Edge/ Boundary Zone Width.

Pier Longitudinal Ratios:

Pier Reinforcement Ratio:

Pier Edge/ Boundary Zone Width:

Pier Shear Reinforcement:

RESULTS:

1. Analysis was performed and RCC Shear Wall was designed.
2. Extracted values of Longitudinal Steel Ratio, Boundary Element Length and Shear Reinforcement ratio from Design results.