The design answers the call of the
Ghanese Ministry of Lands and Natural Resources for the design of a
landmark building of 5.500 sqm, housing the national and regional
Land Sector Agencies.The design responds to local climatic
and social parameters throughout the scales. All design-elements,
from the urban setting to the buildings shape and its materialization
are geared towards natural and sustainable performance fulfilling
several functions at the same time. The building is elevated
from the ground and as such it presents itself very strong in a
visual way and will be recognized and remembered and become a
landmark for this place.A clear and prolonged north-south
orientation avoids the steep hot sun of the mid-day and reduces the
surfaces exposed to low eastern and western sun. The circulation
system forms the core of the building spiraling upwards between two
rings of offices on different levels. Breaking the clear separation
between floors this system provides a continuous movement, bringing
the New Lands Commission together on one continuous floor with a
variety of perspectives in and through the building. The
interior courtyard becomes a fresh air container. The courtyard is
shaded by the building itself and large palm trees. It provides a
pool of fresh air additionally cooled by a rainwater pond and feeds
the natural ventilation of the building. Vegetation and water filter
the sandy Sahara winds.The outer appearance of the building
is shaped by a parametric system that guaranties functional
performance while allowing for aesthetic variation. The
diamond-shaped panels with different openings all follow the lowest
sun-angle. They are rationalized to a modular set that can be
manufactured in a local and low-tech manner.