Challenge

Reinforcement detailing of Columns from ETABS output

Aim:- To provide,

The details of longitudinal reinforcement for the two columns (3A & 3B), from foundation to terrace level.

The details of shear reinforcement as per special confining reinforcement provision of clause 8.1 of IS 13920 - 2016.

Introduction:-

A reinforced concrete column is a structural member designed to carry compressive loads, composed of concrete with an embedded steel frame to provide reinforcement.
For design purposes, the columns are separated into two categories: short columns and slender columns.
A short column is a structural member whose relatively short length virtually ensures it will fail in compression if it is evenly loaded along its axis.
Columns can be classified as short, intermediate, or long, depending on their lengths, their material properties, and the lengths of other columns in the same structure.
A slender column is a thin column. For any construction, foundation starts with marking the position of columns and then their design and analysis.
Slender column can be tested in laboratory to observe the action of buckling or cripping. For a column,based on slenderness ratio, it is termed as long or short column.

Procedure:-

Step:-1

Step:-2

Step:-3

Next we have to start the design by selecting the 'Start Design/Check' option, then we have to wait till the design completes, as shown below.

Step:-4

When the design completes, the details of the longitudinal reinforcement will be visible, as shown below.

Step:-5

Next we need to select the 'Display Design Info' option and then select shear reinforcement in the design output and click on the ok button.
Now the shear reinforcemnt details will be visible, as shown below.

Step:-6

Step:-7

Here for the column-7 (3A intersection), we take size of column is 450mmX650mm.
The maximum Ast for the column-7 is 7027`mm^2`
Now we provide 16 bars with 18mm dia(16-18`Phi`), shown below.
And we provide size of the stirup as 10mm, for Zone A we provide 100mm spacing and for Zone C we provide 150mm spacing, as shown in the below figure.
And the details of shear reinforcement are provided as per special confining reinforcement provision of clause 8.1 of IS 13920 - 2016.

Step:-8

Here for the column-8 (3B intersection), we take size of column is 450mmX650mm.
The maximum Ast for the column-8 is 5046`mm^2`
Now we provide 16 bars with 20mm dia (16-20`Phi`), as shown below.
And we provide size of the stirup as 10mm, for Zone A we provide 100mm spacing and for Zone C we provide 150mm spacing, as shown in the below figure.
And the details of shear reinforcement are provided as per special confining reinforcement provision of clause 8.1 of IS 13920 - 2016.

RESULT:-

Provided the details of longitudinal reinforcement for the two columns (3A & 3B) successfully, from foundation to terrace level.
Provided the details of shear reinforcement as per special confining reinforcement provision of clause 8.1 of IS 13920 - 2016.
And also provided the column cross sectional & elevation details using the AutoCAD software.

Ship work like this
in your own course.