Beam Calculator Studio

Inputs

Input navigation • setup, section, loads and checks

Multi-open accordions

Project / beam setup

Beam system Analysis input Support condition Load input units Steel grade Span L (m)

Continuous beam

Number of spans Left end support Right end support

Internal column lines are modelled as simple vertical supports. The left and right beam ends can be set to free, simple or fixed.

Span

Length (m)

Load combinations (LC) γM0 ψ factor Q1 (main) ψ factor Q2 (secondary)

Advanced EC3 load combination audit

Custom ULS G factor Custom ULS Q1 factor Custom ULS Q2 factor Custom SLS G factor Custom SLS Q1 factor Custom SLS Q2 factor

Per-check EN 1990 6.10a/6.10b envelope

Custom factors are metadata-only in this stage.

Combination preview

Advanced EC3 support mapping

Support mapping label Support equivalence note Spring restraint equivalence note

Recorded for reference comparison; not yet used by calculation engine.

Section selection

Section source

Profile family Profile size

Section class (EC3) Deflection limit (SLS)

Include section self‑weight as full-span G UDL

SLS deflection basis

SLS self-weight included for reference comparison

Advanced EC3 material and section setup

Material variant National Annex label Coefficient source Auto classification status Class 4 effective mode

Variant recorded for reference comparison; current engine uses strength grade only.

Advanced EC3 section-control assumptions

Shear factor eta

Force elastic resistance for Class 1-2 sections

Conservative N + My + Mz

Flange buckling not taken into account

Web buckling not taken into account

By default, Class 1 and Class 2 sections may use plastic bending resistance. This option forces elastic resistance using Wel instead of Wpl for conservative/reference comparison. Flange and web buckling toggles are recorded for reference comparison; not yet used by calculation engine.

Loads

Beam load input

Each load row has its own direction and G/Q load case. x positions are measured from the left end of the beam.

Uniform loads

Point loads

Moment loads

Trapezoidal loads

Axial forces

Axial force acts along the member X-axis. Each row uses its own G/Q load case.

Axial sign convention

Recorded for reference comparison; not yet used by calculation engine.

End forces

For members with joint/end actions only. Positive N = compression. Values are entered as design actions and are not load-factored.

Action	End 1 (left)	End 2 (right)	Unit
N			kN
My			kN m
Mz			kN m
Vz			kN
Vy			kN

End 1 is x=0 and End 2 is x=L. Signed End 2 values are used exactly as entered. No G/Q load-combination factors are applied.

Column / buckling interaction (compression only)

Buckling length factor y Buckling curve y Buckling length factor z Buckling curve z Member interaction method Reference interaction label

When N,Ed is compression, the app adds member buckling resistance and major-axis interaction checks.

Current engine uses simplified interaction; reference Method 1/2 recorded for comparison.

Units / assumptions

Linear elastic beam analysis using an Euler-Bernoulli beam stiffness model. Positive load inputs are downward. Current input units: point loads in metric tonnes and UDL in t/m.

Stability / LTB

Check lateral torsional buckling

k-factor Lateral restraint points Load level LT buckling model γM1 LTB C1 LTB C2 LTB C3 LTB kw Reference load height Shear-centre / eccentricity convention LTB restraint model Moment-gradient method lambdaLT,0 beta

LTB C3, kw, load height, restraint model, moment-gradient method, lambdaLT,0 and beta are recorded for reference comparison; not yet used by calculation engine.

Supports / stiffeners

End post Vertical web stiffener Stiffener spacing a (mm) Support bearing model Web bearing model Stiffener model Modal analysis status

Support bearing, web bearing, stiffener model and modal analysis status are recorded for reference comparison; not yet used by calculation engine.

Z-direction loading — strong-axis bending My / shear Vz

Strong axis

Vz(x) [kN] (ULS)

My(x) [kN·m] (ULS)

z-deflection [mm] (SLS)

Y-direction loading — weak-axis bending Mz / shear Vy

Weak axis

Vy(x) [kN] (ULS)

Mz(x) [kN·m] (ULS)

y-deflection [mm] (SLS)

Shear

Active chart

Moment

Active chart

Deflection

Active chart

Tables

Reactions + governing values

Results