30204020

Steel Use in Buildings

Applications by million tonnes
■Windows & Doors3
■Curtain Walls2
■Roofing & Cladding4
■Others2
11 million tonnes

2519442=

Top 5 Sources of
Global C02 by Industry

Industries by percentage
■Cement24.9
■Steel1.85
■Plastic0.35
■Paper0.42
■Aluminium0.24
9.85 gigatonnes

f30508040

Proportion of Materials
Used in Building Elements

Building Elements by percentage
■Superstructure / Substructure15
■Exterior Envelope25
■Building Services40
■Interior Systems20