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CORRADI SRL - USER MANUAL
Alba
Rev. 1 - 06.2018
TABLES
Table 1 - Wind resistance classes according to EN 13561
Class*
Nominal pressure
of the wind
Equivalent wind speed
(indicative)
Equivalent Beaufort scale
(indicative)
Weather conditions
(indicative)
Wind effects
(indicative)
0
Not defined, the product is not certified
1
Up to 40 N/sq m
Up to 28 km/h
4
Moderate breeze
Dust and loose paper raised, small branches begin to move
2
Up to 70 N/sq m
Up to 38 km/h
5
Fresh breeze
Small trees begin to sway
3
Up to 110 N/sq m
Up to 47 km/h
6
Strong breeze
Large branches in motion, umbrella use becomes difficult
4
Up to 170 N/sq m
Up to 59 km/h
7
High wind
Large branches in motion, effort needed to walk against the wind
5
Up to 270 N/sq m
Up to 74 km/h
8
Gale
Tree branches break, it is very difficult to walk outdoors
6
Up to 400 N/sq m
Up to 91 km/h
9
Strong gale
Tiles blow off roofs
