Engineering and tunnel construction
One of the most important requirements for the longevity and operational safety of a tunnel structure is to keep harmful mountain water away from the inner shell of the tunnel construction and the traffic area. Building pit safeguards and bridge abutments also need powerful surface drainage in order to safely avoid backwater.
PMI dimpled and drainage membranes are a reliable and efficient solution for perfect water management in tunnel constructions and engineering structures – they are ideal thanks to their drainage capacity of up to 9 l / s m. The dimpled sheets are mounted on the outer shell of the tunnel construction and thus, as an efficient seepage layer, relieve the load on the tunnel seal. Penetrating water is discharged without pressure. Two-layer drainage sheets are used for Cut & Cover tunnels and soldier pile walls.
PM TERRA-TEC is a high performance drainage membrane with 11 mm high dimples and the ideal solution for cut-and-cover tunnels and soldier pile walls.
PM STANDARD GS dimpled sheet with 8 mm high dimples is the problem solution for tunnel constructions with less water.
PM 20 is a high-performance dimpled sheet with 20 mm-high dimples, and the ideal solution for draining rising, seeping and backwater in tunnel constructions.