What is the thickness of a concrete wall if it is stated to be 240 mm thick?

When a concrete wall is described as being 240 mm thick, it directly refers to the measurement of its thickness. The term "thickness" in construction is a specific indication of how deep the wall is from one side to the other. Therefore, stating that the wall is 240 mm thick means it has a measurement of 240 millimeters across its entire thickness. This is a straightforward measurement and forms the basis for various construction calculations, such as structural load-bearing capacities or insulation requirements.

In this context, the other answers do not align with the provided information. They reflect different measurements that do not match the stated thickness of the wall.