Articles
GOOD REASONS FOR ROOF PLANTING – GREEN ROOFS AND RAINWATER
Article number
643_38
Pages
295 – 300
Language
English
Abstract
This presentation is expected to be an argumentative basis for a better acceptance of roof planting based on measurements made with green roofs.
The experiments show that annual evaporation factors of 45% 70% of the rainfalls can be achieved.
When choosing ideal substrates an essential reduction of the peak runoff is registered.
Depending on the rating of rainfalls with 100, 200 and 300 l/(s*ha) reductions of the peak runoff as much as 52%, 29% and 17% could be registered when using efficient substrates.
The runoff coefficient declines with increasing watercourse.
Considering a watercourse of 10,0 m single-stratum construction techniques show a 45% better runoff coefficient than multi-strata construction techniques.
The experiments show that annual evaporation factors of 45% 70% of the rainfalls can be achieved.
When choosing ideal substrates an essential reduction of the peak runoff is registered.
Depending on the rating of rainfalls with 100, 200 and 300 l/(s*ha) reductions of the peak runoff as much as 52%, 29% and 17% could be registered when using efficient substrates.
The runoff coefficient declines with increasing watercourse.
Considering a watercourse of 10,0 m single-stratum construction techniques show a 45% better runoff coefficient than multi-strata construction techniques.
Publication
Authors
W. Kolb
Keywords
evaporation, substrate, runoff coefficient, single-stratum construction, multi-strata construction
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