At street level of the Business and Technology Centre, Sheffield Hallam University, Arundel Way (A-Z p5 4F)
Pierced and bent circular shapes in a metal grille at just above street level allow light into the car park but also provide security. The grilles themselves somewhat resemble cheese graters. They are of differing sizes as the pavement rises up the sides of the building until it is nearly at the ceiling level of the car park under the building.
Sheffield Hallam University as part of the Metal Heaven Project.
Some rust has appeared around the welds on these pieces.