Best-suited Rolled Steel Section for a Tension Member

Introduction:
When selecting a rolled steel section for a tension member, it is important to consider the structural properties and characteristics of each option. The best-suited rolled steel section should possess the necessary strength, stiffness, and load-carrying capacity required for the specific application. Let's evaluate the suitability of each option:

1. Angle Section:
An angle section is formed by two legs joined together at a right angle. It is commonly used for various structural applications due to its versatility. However, for a tension member, an angle section may not be the best choice. It primarily provides bending resistance rather than axial load-carrying capacity, which is essential for a tension member. Therefore, an angle section may not be the most suitable option for this purpose.

2. T-Section:
A T-section consists of a flange and a stem, forming a shape resembling the letter "T". This section is widely used for beams and columns, but it can also be suitable for tension members. The flange provides significant resistance against bending moments, while the stem contributes to axial load-carrying capacity. Thus, a T-section can effectively handle tension forces and is a suitable choice for a tension member.

3. Channel Section:
A channel section comprises a flat base with two parallel legs extending upwards. It is commonly used for structural applications, particularly as a beam or column. However, for a tension member, a channel section may not be the best option. Its shape is more suitable for resisting bending moments rather than axial loads. Therefore, a channel section may not provide the desired strength and stiffness required for a tension member.

4. Flat Section:
A flat section is a simple and straightforward option, with a rectangular shape and uniform thickness. While it may be suitable for certain applications, a flat section is not typically recommended for a tension member. It lacks the structural shape and geometry to effectively resist axial loads. Therefore, a flat section may not possess the necessary load-carrying capacity for a tension member.

Conclusion:
Among the given options, the T-section is the most suitable rolled steel section for a tension member. Its shape and structural properties provide the required strength, stiffness, and load-carrying capacity necessary to effectively resist axial loads.