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 75x40x3.75

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 75x40x3.75 (UK / Australia)

El perfil de acero U 75x40x3.75 pesa 4.2 kg/m (2.79 lb/ft), tiene una altura de 75 mm (2.95 in), ancho de ala 40 mm (1.57 in). Área de la sección transversal: 539.1 mm². Momento de inercia Ix = 45.84 cm⁴, Iy = 7.44 cm⁴.

Sección transversal (sin escala)

Gauge equivalent: 3.75 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensiones

Propiedad	Métrico	Imperial
Altura (h)	75 mm	2.95 in
Ancho (b)	40 mm	1.57 in
Espesor (t)	3.8 mm	0.15 in
Peso	4.2 kg/m	2.79 lb/ft

Propiedades de la Sección

Propiedad	Métrico	Imperial
Área (A)	539.1 mm²	0.836 in²
Momento de inercia (Ix)	45.84 cm⁴	1.10 in⁴
Momento de inercia (Iy)	7.44 cm⁴	0.18 in⁴
Módulo resistente elástico (Sx)	12.22 cm³	0.746 in³
Módulo resistente elástico (Sy)	2.41 cm³	0.147 in³
Módulo resistente plástico (Zx)	14.06 cm³	0.858 in³
Módulo resistente plástico (Zy)	2.89 cm³	0.176 in³
Radio de giro (rx)	2.92 cm	1.150 in
Radio de giro (ry)	1.17 cm	0.461 in

U 75x40x3.35 U 75x40x4.25

Calculadora de Viga— U 75x40x3.75

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Luzmfixed @ 0mfixed @ 6m→kN/m

Resultados — U 75x40x3.75

Mmax

15.0 kN·m

Vmax

15.0 kN

δmax

184.06 mm

L/33

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

Norma:

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