Our test methods comply with the guidelines of the Federal Office for the Environment FOEN for certification of protection nets against rockfall:
- Vertical fall excludes the possibility of a ground contact during the deceleration process, which can falsify the results in oblique fall .
- The use of uniform, prefabricated projectiles in free fall allows us to determine the impact velocity and energy exactly in advance.
- The intended point of impact is reached with high precision (+/- 5 to 10 cm).
- The only type of testing known that allows for repeatability, and thus testing validity (ability fo verify)
In natural rockfall events, masses normally have an impact velocity between 10 and 20 m/s, or 25 m/s in exceptional cases. For this reason we test in conformance with the guidelines, with 25 m/s and with rock masses for impact energies from 250 kJ to 3000 kJ. This represents the most stringent possible conditions.