UNE-CEN/TR 17179:2018 Thermoplastics piping and ducting systems - Rainwater infiltration and storage attenuation systems - Practices for underground installation (Endorsed by Asociación Española de Normalización in April of 2018.)
2018UNE-CEN/TR 17179:2018 Thermoplastics piping and ducting systems - Rainwater infiltration and storage attenuation systems - Practices for underground installation (Endorsed by Asociación Española de Normalización in April of 2018.)