What is the purpose of using timber in shoring?

Using timber in shoring primarily serves the function of holding sheeting against trench walls. In construction and excavation, shoring is a method employed to support an excavation and prevent the collapse of soil. Timber provides the necessary structural integrity to keep the walls of the trench stable while work is being conducted. The sheeting helps to retain the earth and prevent it from falling into the excavation area, ensuring a safe working environment for workers.

Timber is specifically selected for its strength and ease of use, allowing for effective support of the vertical walls of trenches and other excavated areas. In scenarios where soil may be loose or unstable, proper shoring with timber can prevent accidents and protect both personnel and equipment, making it a crucial element in excavation safety practices. Other options mention uses of timber in ways that do not relate to the immediate need for safety and stability in excavation scenarios.