651025
Steel Use in BuildingsApplication by percentage
■Superstructure65
■Substructure10
■Non-structural25
f30508040
Proportion of MaterialsBuilding Elements by percentage
■Superstructure / Substructure15
■Exterior Envelope25
■Building Services40
■Interior Systems20
Steel Use in Buildings
Applications by million tonnes
■Windows & Doors3
■Curtain Walls2
■Roofing & Cladding4
■Others2
11 million tonnes