Agriculture Reference
In-Depth Information
4.12 LIGHTING
Façades of buildings are regularly illuminated by spectacular lighting design. As
the “ifth” façades, roofs are often forgotten, especially lat roofs. However, lat
roofs in cities are frequently looked upon from other high-rise buildings, and so
present many, tremendous and varied opportunities for lighting. These opportu-
nities are a response to a living roof's overall design, and as a response to pat-
terns of use by people using the living roof as a social space. Lighting can
enhance the many positive attributes living roofs have to offer, and can act as:
• anartinstallationtobevieweduponfromotherhigh-risebuildings;
• anenhancementofthedesignforms/shapes/spacesofthevegetationand/or
hard landscape elements;
• ameansbywhichtoheightentheviewingexperienceontheroofitself,as
well as from the ground level, particularly with sloped roofs.
The design should consider the following:
1 Lighting ixtures and cables installed above the drainage layer mostly in or
above the growing medium ensures easy access for maintenance and reduces
complicated multiple electrical access points which create opportunities for
perforating the waterprooing membrane.
2 Off-grid renewable energy solutions like solar panels and windmills are often
feasible for powering lighting. However, in some cases (such as landmark or
civic projects), back-up electricity will be required. Small rotating lamps allow
different light scenarios. Plant growth around the light ixtures should be
maintained to prevent obstruction of the ixtures, so as not to impede their
desired function.
Table 4.3
summarizes the minimum steps in the design process, and provides
quick reference to sections in this topic where relevant information may be
found. Successful living roof projects incorporate into the design process how the
system should be constructed and maintained. The approach adopted in this
book prioritizes design for stormwater management.
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