In these results of a compression test, samples of GEOlightŪ 400 were compressed at 1mm per minute. The deformation at 400kN/m2 shows as being approximately 1.6%.
SDS takes pride in manufacturing our own unique GEOlightŪ stormwater attenuation tanks entirely from post-consumer PVC waste normally destined for landfill. This reduces carbon footprint and helps projects achieve a higher BREEAM rating (the building environmental assessment).
GEOlightŪ has been specifically designed to form underground water storage reservoirs in storm water management schemes. Its honeycombed structure gives it certain unique characteristics that make it ideal for this purpose:
- The high void rate (95%) of GEOlightŪ means that the maximum volume of water is stored in the minimum volume.
- It has high compressive strength and is available in two strengths as standard: 200 and 400kN/m2. Higher compressive strengths are also available from 600 to 1000 kN/m2, see graph right.
The GEOlightŪ Storm water Attenuation System consists of two manholes (inspection chambers) connected by a length of perforated distribution pipe which feeds the storm water storage reservoirs on either side formed from GEOlightŪ.
The distribution pipe is normally from 225mm up to 500mm diameter, generally covered in a trench filled with draining material such as 15/25 clean graded stone, free from fines.
The reservoirs and distribution pipe are wrapped in a waterproof membrane, such as butyl, to prevent water seeping into the surrounding ground. The top of each GEOlightŪ reservoir has a vent which is connected back to the upstream manhole. A geotextile or 10mm mesh geogrid is laid between the distribution pipe and GEOlightŪ to prevent the GEOlightŪ units being clogged by the draining materials.
- GEOlight design details
- How does GEOlight work?
- Other uses of GEOlight
- GEOlight advantages
- Which GEOlight is for me?