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point, and special attention shall be paid to the existence of the appropriate ballast weight. It is
prohibited to cut or damage the glass-fibre reinforced plastic in any way.
Warning!
Because the thickness of the ballast layer may change by time (people walk on it, it is eroded
by wind or rain etc.), the actual layer thickness must be controlled before each use by visual
inspection at least. The ballast layer must always cover the ballasting mat on the entire
surface. In case of inadequate layer thickness, additional ballast material is required.
The various types of ballast materials (substrate, gravel etc.) can be combined within one
system; in such a case uniform weight distribution of the mixed ballast materials shall be
ensured. For this help is provided by the marking placed on the anchor post of the damping
plate, which is described in detail in the Installation Guide.
6.2.1
Installation of the system in the case of ballast materials with various layer
thicknesses
Thickness of ballast material
≤
20 cm Thickness of ballast material
≥
20 cm
Layer thickness of the ballast materials on green roofs can be different. If thickness of the ballast layer
is maximum 20 cm or less, the system can be installed in the regular way. For larger layer thickness
the system can be installed using a custom size anchor post and DS auxiliary rising element. This
applies both for the wire-rope and single systems.
6.2.2
Uniform layer thickness
Basically, the uniform weight distribution of the ballast materials shall be ensured. Only the minimum
layer thickness shall be ensured. The top of the post of the DiaSafe
®
systems shall be at least 10 cm
above the surface of the ballast layer.
6.2.3
Varying layer thickness
Uneven ballast layer is permitted under observance of the load parameters.
