Blue Roof Meander FKM 30 System Solution

TECHNICAL DATA

Weight *: starting at 90 kg/m² or 0.9 KN/m² *

Layer height: 90 mm

Roof pitch: 0-5° (0-9 %)

Vegetation form: sedum-moss

Water retention: 50 %

Discharge coefficient: Cs=0.01 **

Discharge yield ***: 3 l/s x ha

Water storage: ca. 21 l/m² -40 l/m² temporarily

* Depending on the load capacity of the substructure, Optigrün "High Density (HD)" or "Low Density (LD)" substrates can be used. Weight specifications refer to saturated conditions; dry weight is approximately 60 - 70 % of the saturated weight. In accordance with the requirements of the FLL guideline, the specified weight does not take temporary water accumulation into account.

** For the calculation of the dimensions of the pipe we recommend the discharge coefficient Cs = 0.1. Cs= 0.01 determined for 2 % according to the FLL guideline.

*** Determined according to FLL discharge coefficient measurements using a 15-minute reference rainfall r(15) = 300 l/s x ha.