May 13, 2021
protection des réseaux enterrés
The OVERPIPE warning mesh with high mechanical resistance (GHRM) is considered a mechanical protection by French regulations (GESIP guide 2008/02). It can withstand impact from an 18-tonne excavator, and benefits from a risk reduction factor of 0.05 to 0.025 (GESIP guide 2008/01). Reinforced strips on the edges increase the resistance against lateral impact and provide a support for the customisable warning message. The specific production method (warp-knitting) serves to reinforce the connections between warp and weft threads.