Reinforcement detailing of Columns from ETABS output

Answer to the Question No. 1

Question:

Reinforcement detailing of columns in Etabs 2018.

The ETABS file for a G+4 building is provided. Run the analysis and design the RCC Moment Resisting Frame. The following challenge deals specifically with two columns at the following grid intersections.

1. 3A
2. 3B

• Provide details of longitudinal reinforcement for the two columns, from foundation to terrace level. Sketch the column cross-sectional & elevation details or draft it using AutoCAD and software.
• Show shear reinforcement & lapping details as per special confining reinforcement provision of clause 8.1 of IS 13920 - 2016.

Answer:

AIM: Aim to the question is to Providing details of longitudinal reinforcement for the two columns from foundation to terrace level.

INTRODUCTION: In this question we have to,

• Provide details of longitudinal reinforcement for the two columns, from foundation to terrace level. Sketch the column cross sectional & elevation details or draft it using autocad software.
• Show shear reinforcement & lapping details as per special confining reinforcement provision of clause 8.1 of IS 13920 - 2016.

PROCEDURE: TO COMPELETE THE ANSWER OF THE QUESTION WE HAVE TO FPLLOW THE FOLLOWING STEPS:

STEP-1

• Open a G+4 Etabs file
• Click the Concrete Frame Design tool
• Select the Display Design Info option
• Choose design output as Longitudinal Reinforcement

STEP-2

• After Selecting the Longitudinal Reinforcement click Elevation View
• To avoid the confusions click tick mark on ribbon and uncheck beam

STEP-3

• Now need to calculate the reinforcement details of 3a and 3b

STEP-4

• For Shear reinforcement, Click the Concrete frame design tool
• Choose Shear Reinforcing
• Click apply and ok

STEP-5

• After selecting the Shear reinforcement option the shear reinforcement values are obtained at each column.

STEP-6

Grade A

From Base to first floor the maximum Ast is = 7027

• So we can provide 10nos of 32mm dia bar = 10 x 804

= 8040mm^2

• From First floor to Terrace the maximum Ast is = 4800

So, We can provide 6nos of 32mm dia bar = 6 x 804

= 4824mm^2

GRID B:

1) From Base to Terrace the maximum Ast is = 5046

2) So we can provide 8 nos of 32mm dia bar = 8 x 804

= 6432mm^2

Therefore it can be satisfied entire span.

RESULT: i completed Reinforcement detailing of columns in Etabs 2020. The ETABS file for a G+4 building is provided. Run the analysis and design the RCC Moment Resisting Frame. The following challenge deals specifically with two columns at the following grid intersections.