Reinforcement detailing of Columns from ETABS output

1)AIM & INTRODUCTION: design a 5 storey building , run analysis and design the rcc frame

PROCEDURE: open the excisting model -select 3A & 3B columns -right click and choose the option -show selected objects only - go into 3d view - analyse the maximum and minimum deflection ranges are available at the status bar at the left hand side -use extruded view to see the orientation of columns

press concrete frame design - concrete reinforcements are visible - elevation view - move to grid 3

press concrete frame design - drop down - design information - shear reinforcement - apply - ok -view shear reinforcement - same value - this is the minimum shear reinforcement as per ductility standard or as per the gravity standard

special confiming reinforcement from IS93920-2016

Lo not less than:

1. larger column dimension
2. 1/6 of clear span of column
3. 410 mm , hence Lo=650

confinement spacing is not more than:

1. 1/4 of smaller column dimension
2. 6 times of diameter of column main bar
3. 100 mm ,hence spacing=100mm

The amount of confinement rebar:

Asn=Max of (0.18Su h fck/fy(Ag/Ak-1)

(0.05 Su h fck/fy )

=169 mm^2

3A REBAR

10 NO of 32mm dia main bar stirrups (2 link+1hook)

3B rebar

2 No of 32mm dia bar + 8 no of 25mm dia main bars stirrups (2 links+1hook)

RESULT: designed a 5 storey building , run analysis and designed the rcc frame for moment resistance succesfully

REPORT FORMAT: