Fair-faced concrete - one of the largest challenges in structural engineering and an important element in architecture. 

As the element that bears the load and gives an element its shape, concrete is a key part of the design and has a specific architectural effect on the structure. In each phase of the structural work being carried out, whether directly after the stripping of the concrete surfaces, or after decades of being exposed to the elements, the type and way the surface treatment is carried out determines its character.