EUROCODE 1 · EN 1991-1-3 + EN 1991-1-4
EN 1991 specifier-verktyg
Välj land och vind- / snözon för installationsplatsen. Verktyget beräknar referens-vindtryck (qb) och karakteristisk snölast (sk) enligt Eurocode 1 nationella bilagor och kontrollerar sedan varje Luxa Sereno-pergola mot dess nominella envelopp. För bygglovsdokumentation beställ alltid en platsspecifik konstruktionsberäkning.
Platslaster & produktöverensstämmelse
Plats referens-vindtryck qb
0.391 kN/m²
vb,0 = 25 m/s
Plats karakteristisk snölast sk
0.81 kN/m²
| Produkt | qb max | Vindmarginal | sk max | Snömarginal | Utlåtande |
|---|---|---|---|---|---|
| Luxa Sereno 700 | 0.55 | +29% | 1.50 | +46% | OK |
| Luxa Sereno 500M | 0.55 | +29% | 1.50 | +46% | OK |
| Luxa Aperio 800 | 0.50 | +22% | 1.20 | +32% | OK |
qb (kN/m²) = ½ × 1.25 × vb,0² · margin = (qbMax − siteQb) / qbMax · sk margin analogous.
METHOD
Wind reference pressure qb = ½ × ρ × vb,0² (ρ = 1.25 kg/m³). Site qb is the value at 10 m height, terrain category II (open, low vegetation). For taller installations or rougher / smoother terrain apply the cprob, ce(z) and orography correction factors per the relevant national annex.
Snow load on the structure s = μ1 × Ce × Ct × sk where μ1 (roof shape coefficient) = 0.8 for flat or low-pitch roofs < 30°, Ce = 1.0 for normal exposure, Ct = 1.0 unless heated. The Luxa Sereno tilt-louvre roof in closed position is treated as flat for snow drift calculations.
This tool returns characteristic / typical zone values. For permit submissions, your structural engineer must apply altitude correction (where sk depends on elevation), local exposure coefficients, and the partial safety factors of EN 1990 / national annex.