Sankey diagram

GWP flow through the building hierarchy, from building to building elements and operation, onward to categories.

Element	Meaning
Unit	Per m²/year, per m² or total. Choosing Weight (kg) instead shows the building products’
weight rather than GWP, and the Modules detail level isn’t available (falls back
to Building products), since weight only exists for A1-A3
Detail level	Choose how many levels the flow shows: Building elements and operation → Categories → Constructions → Building products → Modules or Material categories
Flow width	The width is the absolute value — net-negative contributions are instead shown with a sign in the tooltip and table
“Other”	The chart shows the 12 largest flows per level and collects the rest; the table is complete
D modules	Reported separately, per EN 15978

See also

• Sunburst chart — the same hierarchy, as rings instead of a flow