Is CalcSteel really free to use?

Yes. CalcSteel is genuinely free — the Free plan includes the full 3D editor, FEM solver, 1,140+ steel profiles, and code verification per NBR 8800, AISC 360, Eurocode 3, AS 4100 and IS 800. Paid plans ($12–29/month) add project saving, unlimited sheets and clean PDF export. No credit card required to start.

What is the best free alternative to SAP2000 and CYPE 3D?

CalcSteel is a browser-based alternative focused on steel structures. For steel frame analysis, portal frames, warehouses and code verification you get a workflow comparable to SAP2000 and CYPE 3D — at zero cost. SAP2000 is still needed for complex dynamics, nonlinear analysis and multi-material projects. CYPE remains stronger in concrete, timber and connection design.

Which design standards does CalcSteel support?

CalcSteel currently verifies steel members per five major international standards: NBR 8800 (Brazil), AISC 360 (USA), Eurocode 3 / EN 1993 (Europe), AS 4100 (Australia) and IS 800 (India). This covers roughly 120+ countries. NBR 14762 for cold-formed sections is also supported.

Do I need to install anything to use CalcSteel?

No. CalcSteel runs entirely in the browser — Chrome, Firefox, Safari or Edge — using WebAssembly for the FEM solver. There is nothing to install, no license server, no dongle. It works on Windows, macOS, Linux and Chromebook.

Can I export my project as a PDF or IFC/BIM file?

Yes. CalcSteel generates professional PDF reports with load combinations, internal forces, utilization ratios and design verification tables. IFC / BIM export is available for interoperability with Revit, Tekla and other BIM tools.

Catálogo de Perfiles Metálicos

U 75x40x4.25

BR — Perfil U (Canal)

Los perfiles U (canales) son similares a los perfiles C pero sin labios rigidizadores. Usados para marcos ligeros, soportes y elementos secundarios.

También conocido como: U 75x40x4.25 (UK / Australia)

El perfil de acero U 75x40x4.25 pesa 4.6 kg/m (3.12 lb/ft), tiene una altura de 75 mm (2.95 in), ancho de ala 40 mm (1.57 in). Área de la sección transversal: 604.6 mm². Momento de inercia Ix = 50.61 cm⁴, Iy = 8.11 cm⁴.

Sección transversal (sin escala)

Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensiones

Propiedad	Métrico	Imperial
Altura (h)	75 mm	2.95 in
Ancho (b)	40 mm	1.57 in
Espesor (t)	4.3 mm	0.17 in
Peso	4.6 kg/m	3.12 lb/ft

Propiedades de la Sección

Propiedad	Métrico	Imperial
Área (A)	604.6 mm²	0.937 in²
Momento de inercia (Ix)	50.61 cm⁴	1.22 in⁴
Momento de inercia (Iy)	8.11 cm⁴	0.19 in⁴
Módulo resistente elástico (Sx)	13.5 cm³	0.824 in³
Módulo resistente elástico (Sy)	2.62 cm³	0.160 in³
Módulo resistente plástico (Zx)	15.52 cm³	0.947 in³
Módulo resistente plástico (Zy)	3.14 cm³	0.192 in³
Radio de giro (rx)	2.89 cm	1.138 in
Radio de giro (ry)	1.16 cm	0.457 in

U 75x40x3.75 U 75x40x4.75

Calculadora de Viga— U 75x40x4.25

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Luzmfixed @ 0mfixed @ 6m→kN/m

Resultados — U 75x40x4.25

Mmax

15.0 kN·m

Vmax

15.0 kN

δmax

166.72 mm

L/36

R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m

Norma:

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