ALFA grilles
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Expanded metal walkways
ALFA GRILLES are suitable for the construction of gangways for the inspection and maintenance of roofs and photovoltaic systems.
Standard and customised modules
The grilles are made with lateral strengthening folds that guarantee the loads required by Category H of the NTC 2018 (Technical Standards for Construction, Tab. 3.1.II):
- load capacity distributed 50 kg/m2
- load capacity concentrated 120 kg
Two widths are available: 250 mm and 300 mm. The length can be made to measure, not exceeding 2000 mm.
FAQ
To classify the anti-slip properties of floor coverings, German standard DIN 51130 tests each covering at 5 different angles of inclination in order to find the angle at which slipping begins. A material is deemed to have a low coefficient of friction when feet start slipping when the test ramp is set at a small angle.
Slip angle |
Slip resistance classes |
<= 6° | Not classified |
6° < α |
R9 |
10° < α |
R10 |
19 < α |
R11 |
27° < α |
R12 |
> 35° | R13 |
Fils gratings guarantee excellent anti-slip properties according to rigorous certification tests carried out by notified European certification bodies.