Sandwich Panel Designer BETA

Calculation Mode

Mode Country coefficients

Country selection applies EN 1990 load-combination coefficients and factors to the calculation parameters.

Wall Application

Application

External wall uses wind zoning. Internal wall, ceiling, and cold storage presets use uniform internal pressure only.

Wind · Geometry

Wind input mode Basic wind velocity v_b (m/s) Terrain category Building height h (m) Depth parallel to wind d (m) Width perpendicular to wind b (m)

Auto mode calculates q_p(z) from v_b, terrain, and height.

Wind · Internal Pressure

c_pi,max (positive) c_pi,min (negative)

Suction zones use c_pi,max; pressure zone D uses c_pi,min.

Zone Panel Assignment

Calculate Zone A separately with a different panel

Unchecked = one panel for all zones. Checked = the first panel applies to Zones B/C/D/E and the second panel applies only to Zone A.

Panel · Selection

Assembly orientation Product Thickness D (mm) External steel t₁ (mm) Internal steel t₂ (mm)

Panel · Spans

Max span calculation

Left overhang L_ov,1 (m) Right overhang L_ov,2 (m) Deflection limit (L / ?) Support bearing L_s (mm)

Single span by default. Add supports to create more spans and enter each span length in sequence.

Support bearing is checked automatically when the selected panel has core compression data. Leave L_s empty to calculate the minimum required support width.

Add a separate panel configuration checked independently against the same loads.

Temperature

Outdoor summer ϑ_1,sum (°C) Indoor summer ϑ_2,sum (°C) Indoor winter ϑ_2,win (°C) Outdoor winter ϑ_1,win (°C)

EN 14509 §E.3.3: summer inside +25 °C, winter inside +20 °C. ΔT = outdoor − indoor.

Fasteners

Screw type Panel cover width (m) Extra vertical load (kN/m²) EI-M screw check (EN 15254-5 Annex B)

Fastener design uses the assembly orientation set in Panel · Selection. Screw head assumed on the external face; outer steel thickness governs.

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Awaiting Parameters

Configure inputs on the left, then click Calculate Now.

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READY TO SOLVE

0 parameters active

Zone	w_e (kN/m²)	Zone length (m)
Zone A
Zone B
Zone C
Zone D
Zone E