Challenge

Reinforcement detailing of Columns from ETABS output

AAditya Bhute16 Oct 2022

Reinforcement Detailing of COLUMNS from ETABS output

AIM -

To Study The Reinforcement Detailing of columns from ETABS output

INTRODUCTION -

ETABS is an engineering software product that caters to 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. We all know that earthquake is a devastating disaster on planet earth. Earthquake codes are revised period by period and updated improvements in the representation of ground motions, soil, and structures. Moreover, these revisions have been made in recent years. The Indian Standard Code (IS 1893:2016(Part-1)) was also revised in 2001 and has been in effect since 2002. Most recent data on earthquakes show that the irregular distribution of mass, stiffness, and strengths may cause serious damage to structural systems.

OBJECTIVE -

To know the design of the RC column using ETABS analysis
To know the basics of RC concrete reinforcementment detailing concerning primary standards
To ensure the ductility reinforcement required by IS-1390-2016 has been satisfied in the reinforcement drawing

PROCEDURE -

STEP 1

Open the Model for which You Want to Design Columns in the ETABS
Double-click on the ETABS shortcut on your desktop or run it from the start menu.r
From the ETABS opening screen go to the open files
Browse for the building model created last week.
Click on open and wait for the model to be run in the software.

STEP 2

As we know that ETABS is a 3d analysis tool that produces excessive results regarding each structural member.
Therefore, we need to separate the results for the frames and as we want to design by adjusting the view settings in ETABS.
And in our case, we need to focus on two columns as given in the challenge, column at the grid positions of A3 and B3.
So, select the two columns on grid positions A3 and B3 then right-click on your ETABS screen and select the option called view only selected.
This way, all other objects except the selected columns will be automatically hidden by the software and it will be a lot easier to understand the results for the said columns.

STEP 3

Then, run the analysis, and after that click on concrete frame design
After completion of concrete frame design Go to the elevation of 3 grids.

Longitudinal Reinforcement Requirement for the Columns placed at grids A3 and B3

Shear Reinforcement Requirement for the Columns placed at grids A3 and B3

COLUMN A3 ---

Column reinforcement are drawn in Autocad next.

Column 3A:

Max Ast = 7200

So providing 10 bars of 32mm

Also provide 8mm stirrups with 100 mm and 200mm spacing

GROUND FLOOR

FIRST FLOOR

SECOND FLOOR

THIRD FLOOR

FOURTH FLOOR

RESULT -

COLUMN B3--