Façade Statics: Wind Loads, Deflection and Vertical Mullion Selection

Sample Façade Structural Report

Below is a sample façade statics report prepared by façade consultant and civil engineer Utku Çiçek. The report includes wind load, deflection limits and required second moment of area (I_req) in line with TS 498 and EN 1991-1-4. It can be used for profile selection, engineering verification and safety checks in unitized/curtain walls and aluminum façade systems.

View Sample Report

We also provide anchor, bolt and welded connection checks as well as continuous beam and other structural analyses.

Go to Contact Page

Vertical Mullion Analysis [ under wind load ]

Enter the design area load (kN/m²). Multiplying by the module/axis width B yields the line load w (kN/m). With the span L (cm), the EN 13830:2015+A1:2020 deflection limit is auto-selected and the required second moment of area (I_req) is obtained from the simply supported beam formula (two pinned supports).

Inputs

Project Subject Prepared by Approved by

Design wind pressure, q kN/m² Module / Bay Width, B cm Clear Span, L cm Modulus of Elasticity, E GPa Material (text – optional) Report note Material type (ULS) Yield Strength (ULS) MPa W – ULS stress (optional) cm³ I – SLS deflection (optional) cm⁴

Note: w = |q| × B (kN/m). Deflection limit per EN 13830 5.7–5.8: L ≤ 3000 mm → L/200; 3000 < L < 7500 mm → 5 mm + L/300; L ≥ 7500 mm → L/250.

Results

Wind sign (input)

–

Line load w

–

kN/m

Deflection limit f_limit

–

Required I_req

–

cm⁴

Max deflection Δ_max

–

R (SLS)

–

V_max (SLS)

–

M_max (SLS)

–

kN·m

R_d (ULS)

–

M_d (ULS)

–

kN·m

σ_d (ULS)

–

MPa

SLS (Deflection)

–

Δ_max / f_limit and I_req

ULS (Stress)

–

σ_d / allowable and M_d

Note / Disclaimer: This calculator provides a sample approach for aluminum profile strength (required second moment of area) based on a simply supported, two-pin mullion carrying a uniformly distributed wind load. Methodology may differ for uniform load distribution variations, 3-support systems, fixed (built-in) supports, unitized panels and special cases . This tool is for preliminary information only; final design decisions must be checked and approved by a competent engineer per the relevant standards. Beus Facade accepts no responsibility for applications based solely on results from this tool.