49 Platzhalter Kennzahlen Sustainable space - saving for the future L and is a finite resource. In order to reduce our land use, we rely on dense construction. To provide a concrete example to illustrate our philosophy: on an area of almost 14,000 m2 of built -up land, we use multi- storey construction to create around 50,000 m2 of usable space. By building upwards over several floors, we can achieve seven football pitches’ wor th of space with the footprint of just t wo football pitches. However, in order to implement these ambitious projects, we first have to improve the ground on which we build. These improvements will dif fer from site to site depending on the dif ferent proper ties of the substrate. The buildings too of fer a variet y of structural challenges. That said, multi- storey constructions of fer several energy -ef ficient advantages, since the external sur faces are smaller overall, which means they emit less heat than low -level buildings. The energy itself, required for operations and production, is less easily lost and also has shor ter distances to travel. A compact building is also more weather-resistant and durable. In our building projects, our aim is to make the best possible and most sustainable use of the land available. Land as a resource Change in land use at Blum Austria 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1992 1994 1991 1993 1995 1996 1997 1998 1999 2000 2001 2002 2004 2006 2008 2010 2012 2014 2016 2003 2005 2007 2009 2011 2013 2015 2017 2018 2019 2020 2021 260,0 [%] 240,0 220,0 200,0 180,0 160,0 120,0 140,0 100,0 2022
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