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Interaction Diagrams of Hollow RC Columns

version 1.0.0 (4.17 KB) by Ayad Al-Rumaithi
Interaction diagrams of hollow RC columns with circular or rectangular tubes


Updated 08 Jul 2019

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Two example are attached for interaction diagrams of RC columns with rectangular and circular tubes using the function Interaction_Diagrams.

function Interaction_Diagrams(x,y,x_s,y_s,a_s,fc,fy,E)


x: x coordiantes of section vertix vector (mm)
y: y coordinates of section vertix vector (mm)
a_s: area of steel bars vector (mm^2)
x_s: x coordinates of steel bars vector (mm)
y_s: y coordinates of steel bars vector (mm)
fc: compressive strength of concrete (MPa)
fy: yield stress of steel vector (MPa)
E: modulus of elasticity of steel vector (MPa)


Column section, failure envelope, interaction diagrams in x and y directions are plotted in one figure.

Cite As

Ayad Al-Rumaithi (2020). Interaction Diagrams of Hollow RC Columns (, MATLAB Central File Exchange. Retrieved .

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MATLAB Release Compatibility
Created with R2019a
Compatible with any release
Platform Compatibility
Windows macOS Linux