Reinforcement detailing of Columns from ETABS output

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 software.
• Show shear reinforcement & lapping details as per special confining reinforcement provision of clause 8.1 of IS 13920 - 2016.

ANS:-

• Model open in etabs software
• Check the model

• Select the column intersection 3A & 3B from terrace to foundation
• Click on run analysis it will show the max. & min. deflection at the bottom

Reinforcement Detail

• Click on concrete frame design icon
• It will show the longitudinal reinforcement of the column
• Select the elevation view along the grid 3
• Drop down the icon concrete frame design and click on display design info
• Select shear reinforcement in display concrete frame design

Longitudinal reinforcing

Shear reinforcing

Special confining reinforcement from IS-13920-2016(Clause 8.1)

Lo not less than-

1. Larger column dimension
2. 1/6 of clear span of column
3. 450 mm

Confinement spacing not more than-

1. 1/4 of smaller column dimension
2. 6 times of dia of column main bar
3. 100mm

The amount of confinement rebar