Urban environments are becoming densified, with a greater percentage of
horizontal surfacing covered with structures and hard, impermeable surfacing.
Finnish climate forecasts indicate we will be subjected to higher volumes of
rainfall and more intense storms. Simultaneously, society aims at having
better environment protection and less run-off water carrying pollutants.
Governmental directive require municipalities to implement new methods for
handling stormwater. This project will provide new material solutions to
address these issues. Permeable surfacing combined with sub-surfacing
materials has not been utilized in Finnish due to the lack of quantitative
dimensioning and performance uncertainties for winter durability.
The project includes: 1) Industrial participants identifying urban planning
needs related to climate and water handling. 2) Laboratory experimental
development of permeable solutions using Finnish materials, durable for
Finnish climate and maintenance. 3) Quantitative measures of filtration
ability and water storage capacity are input to stormwater design tools.
Evaluating improvements to stormwater runoff chemistry, with Finnish climate
forecasting and rain intensity modeling. 4) Writing Finnish permeable paving
guidelines for design, construction & maintenance, while ensuring cost &
service-life. 5) International cooperation with a parallel Swedish project
provides added value with respect to vegetation solutions interacting with
permeable surfacing to enhance plant growth & lower urban heat island effects.
Within 3 years the Finnish building industry & municipalities will have the
confidence to specify, produce, construct, maintain & market permeable
surfacing solutions, both domestically & abroad. This project is novel by
approaching environmental & water handling demands from a building materials &
infrastructural design perspective, by providing new technical solutions to
combat urban planning needs.