A two-story building has steel columns AB in the first floor and BC in the second floor, as shown in the figure. The roof load P₁ equals 400 kN, and the second-floor load P2 equals 720 kN. Each column has a length L = 3.75 m. Find internal axial forces in each column, then plot the axial force diagram. Ignore the self-weight of the columns. P₁ = 400 KN P₂=720 kN B L = 3,75 m L= 3.75 m

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Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.