f30508040

Proportion of Materials
Used in Building Elements

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

6474548

Sources of Global
C02 Emissions by Sector

C02 gigatonnes by Sector
■Buildings8.8
■Industry9.9
■Transport7.3
■Other1.1
27.1 gigatonnes

30204020

Steel Use in Buildings

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