Martina Sandholzer, Michael Jerabek, Christophe Salles, Günter Dreiling
Papers # 2014 Chicago
Due to the combination of climate change impact, resulting in many regions of the world having a heavier and unpredictable rainfall, together with increased urbanization, the possibility for lower natural infiltration of the water into the soil has created a real challenge for storm water management systems. Forecast scenarios for both the short- and long-term future are also indicating that these trends will continue to develop.
The plastic pipe industry has successfully faced this challenge over the last few years, through the development and use of “rainwater boxes” or “infiltration boxes”, mainly made from polypropylene. These boxes are designed to create a buffer below ground for temporary storage of this excessive water.
The products are intended to be installed for long periods, up to 50 years and are subject to specific constraints that are somewhat different from pipes .To ensure the long-term structural integrity and fitness for purpose of the installed boxes, the proper combination of material properties and manufacturing design is essential, without compromising on the processing performance.
We will review the influence of the material properties on the short- and long-term performances of the boxes. The key requirements and specific test methods adapted to the specific operating conditions and purpose of these products will be discussed.