EECT012 Structural Engineering

Introduction

To better anticipate the behavior of diverse materials when applied to structures, structural engineering depends on understanding of materials and their characteristics. Steel, concrete, and wood are the three most often utilized construction materials in general. Understanding the advantages and disadvantages of different materials is critical for ensuring a safe and cost-effective approach to building design. In this assignment, the discussion involves comparison of steel and timber as structural material.

Comparison Between Steel and Timber

Steel is a metal alloy made primarily of carbon and iron. Other elements are added to the alloy to give it further qualities. The combination of chromium and nickel to stainless steel is one case. It has the benefit of enhancing the mechanical properties of materials with higher carbon content. Increasing the carbon content of structural steel is not a good idea since it will fail.

On the other hand, wood is a hygroscopic and anisotropic organic substance. Heat, acoustics, electricity, equipment, aesthetics, and labor outputs are all extremely suited for usage, and a home may be built entirely of wood items. With other materials, it's nearly impossible. Wood is a traditional and popular structural engineering material. However, there have been movements of technical items and metals such as aluminum in wood in recent decades.

Due to its relatively light nature as a building material, wood has a larger cut length (or self-supporting length) and outperforms steel. Simply put, some building designs require more space and less support, as they can support their own weight well. Steel has a high strength / weight ratio. As a result, steel structure supports a larger load than wood. It is a particularly appealing structural material for steel skyscrapers, long bridges, low ground constructions, and seismic activity in many places, according to this characteristic.

Ductility, the ability of a material to remain intact under tensile forces, is also an important structural parameter. Steel can go through a lot of plastic deformation before breaking, thus it has a lot of reserve capacity. Timber, on the other hand have very low ductility and is likely to fail under very little tension as compared to steel.

Conclusion

Both wood and steel being structural components, their properties might be compared to decide on which would be the best element to choose depending on a construction project. The structural strength is the most important parameter when comparing the two materials for construction. Recent advances in technology and growing pressure on environmental conservation have led to a demand in more sustainable construction materials. Contrasted with different materials, wood enjoys the benefits of lightweight, high strength, simple handling, low carbon, ecological security, and so on It is a commonplace green structure material and is well utilized in private structures.

Reference List

Guang, Q., Yang, B., Han, Z., Zhou, l., Ling, Z., Lightweight, Tough, And Sustainable Cellulose Nanofiber-Derived Bulk Structural Materials with Low Thermal Expansion Coefficient https://advances.sciencemag.org/content/6/18/eaaz1114?utm_source

Safri, S., Thariq, M., Sultan, H., Jawaid, M., Jayakrishna, K., Impact behaviour of hybrid composites for structural applications, 2018, pp. 112.

Luigi, F., Macillo, V., Landolfo, R. ‘Experimental Characterization of Quick Mechanical Connecting Systems For Cold-Formed Steel Structures’ https://journals.sagepub.com/doi/abs/10.1177/1369433216671318, 2017.

Davies, R., Pedreschi, R., Sinha, B., The shear behavior of press-joining in cold-formed steel structures, Thin-Walled Structures, 1996.

 Yang, N., Bai, F., Damage Analysis and Evaluation of Light Steel Structures Exposed to Wind Hazards. Applied Sciences. 2017, pp. 239.

Lee, Y., Mohammad, S., Tahir, M., Shek, P., Review on Cold-Formed Steel Connections, The Scientific World Journal, 2014, https://www.hindawi.com/journals/tswj/2014/951216/

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