Discontinuous Angle Strut

A discontinuous angle strut is a structural member used to resist axial compressive forces. It consists of two or more angle sections that are connected together to form a strut. The effective length of a strut is the length at which it buckles under compressive loads.

Ratio of Effective Length to Actual Length

The ratio of effective length (L_e) to actual length (L) of a discontinuous angle strut can be determined using the following formula:

L_e/L = 0.85

This means that the effective length of the strut is 0.85 times its actual length.

Explanation

When a strut is subjected to compressive loads, it tends to buckle or fail. The buckling behavior depends on various factors, including the effective length of the strut. For a discontinuous angle strut with welded ends, the effective length can be approximated using the ratio mentioned above.

The effective length of a discontinuous angle strut with welded ends is less than its actual length because the welding of the ends provides additional rigidity and prevents buckling. The welding effectively reduces the effective length of the strut.

The ratio of 0.85 is commonly used for discontinuous angle struts with welded ends. This value is based on empirical studies and experimental data. It provides a reasonable approximation of the actual behavior of such struts.

It is important to note that the ratio of effective length to actual length can vary depending on various factors, such as the type of connection, end conditions, and load conditions. Therefore, it is essential to consider the specific conditions and design requirements when determining the effective length of a discontinuous angle strut.

In summary, the correct ratio of effective length to actual length of a discontinuous angle strut with welded ends is 0.85. This ratio provides a reasonable approximation of the actual behavior of such struts and is commonly used in structural design calculations.