Mechanism$-$Method Analysis of a Rectangular Portal Frame

In civil engineering, the mechanism$-$method analysis of a rectangular portal frame involves studying the structural behavior of the frame under different loading conditions to determine its stability and strength. This analysis method considers the frame as a series of interconnected members subjected to external loads and investigates how the frame responds to applied forces and moments.

The analysis typically includes determining the internal forces, such as axial forces, shear forces, and bending moments, in each member of the frame. Engineers use mathematical equations and structural analysis techniques to calculate these internal forces and assess the frame's overall performance.

The mechanism$-$method analysis helps engineers identify critical load combinations that could lead to failure modes such as excessive deflection, buckling, or structural instability. By understanding the behavior of the frame under various loading scenarios, engineers can optimize its design to ensure safety, efficiency, and structural integrity.

Objective Type Question:

In the mechanism$-$method analysis of a rectangular portal frame, what is the primary objective?

A$)$ To determine the material properties of the frame members

B$)$ To evaluate the aesthetic appearance of the frame

C$)$ To assess the stability and strength of the frame under different loading conditions

D$)$ To calculate the construction cost of the frame