SkyCiv Section Builder

Comprehensive web-based section analysis software for geometric, bending, shear and torsion section properties.

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Section Builder

Build and calculate section properties for any shape using SkyCiv Section Builder! Build your sections using our templates, draw using points or line paths, or import a DXF file!

SkyCiv Section Builder Software calculates complex geometric parameters and performs stress analysis with an easy and intuitive online interface.

SkyCiv Structural Analysis and Design Software is completely cloud-based, allowing users to access their programs and files from a web browser from anywhere, anytime! No need to install or update the software.

SkyCiv CAD editor showing a blue bent profile with dimension callouts on a grid, left shape library and right properties panel.

PRODUCT FEATURES

What SkyCiv Section Builder Offers

Capabilities for modelling and analyzing simple and complex cross-sections.

Templates and Database Sections

Analyze sections from SkyCiv’s comprehensive library of 25,000+ standard shapes from the US, UK, Canada, Europe, Australia, New Zealand, India, China, Mexico, Singapore and South Africa.

Or build your own shape using our templates:

  • Rectangular/Square

  • Hollow Rectangular/Square

  • Hollow Circular/Circular

  • I-Beam

  • T-Beam

  • L-beam (Angle)

  • Double Angle

  • Channel

  • Double Channel

  • Triangular

  • Box Girder

Screenshot of SkyCiv showing a blue hollow box girder outline on a grid, with dimension labels and a right-side panel of box-girder dimensions (depth 180 mm, bottom/top widths ~202.5/157.5–225 mm)

Custom Shapes and CAD Import

Need to model a shape not available in our templates? Specify your own custom shapes:

  • Points Shape: Define points and create your own polygons.

  • Line Shape: Define a line path and create a polygon with a thickness and radius.

  • DXF Import: Prefer to sketch in CAD first? Simply import your DXF file into SkyCiv’s Section Builder for analysis.

  • Union, Intersection and Snap to Grid features to accelerate your section modeling process.

Screenshot of SkyCiv CAD showing a vertical I-beam–like frame outline in blue with left tool panel and right property panel

Built-up Sections

Model your built-up section by adding multiple shapes:

  • Combine shapes from our database library or standard shape templates to create built-up sections.

  • Use operations including rotation, translation, and mirroring to specify relative positioning.

  • Calculate geometric, bending, shear, and torsion properties.

  • Utilize meshing and FEA to solve torsion constant and warping constant.

Screenshot of SkyCiv section editor with a blue steel I/U-beam profile on a grid, flanked by left and right UI panels.

Composite Sections

Need to model sections made up of different materials? We have you covered:

  • Assign different materials to individual shapes.

  • Calculate section properties via the Transformed Section Method.

  • Original section properties are also presented in comparison.

  • Easily model laminar beams and other built-up sections made up of different materials.

UI screenshot of SkyCiv showing a transformed-section cross‑shape: a wide top flange with a narrow stem, blue outline on a grid, right panel with geometric properties

Cross Sectional Analysis Using FEA

SkyCiv cross section builder software enables you to perform analysis on custom and template cross-sections to calculate bending, axial, torsional, and shear stresses. This feature allows for the application of forces to your sections, providing quick stress results using our powerful FEA engine.

Users can easily review axial, bending, shear and torsion stress results via colored contours and PDF reporting. The cross sectional analysis, combined with powerful modeling, lets you design complex and custom shapes with ease.

Quad-panel FEM stress results: top-left bracket-like part, top-right inverted-V channel, bottom-left curved profile, bottom-right rectangular frame with holes; color-coded von Mises stress scales shown for each panel, indicating stress distribution across components.

FSM Calculations

The Section Builder Software has an integrated Finite Strip Method (FSM) Calculator, that meshes the section and calculates buckling properties of cold-formed sections, including the critical buckling loads and factors required for an appropriate Direct Strength Method (DSM) design.

These factors are supported in our design modules for AISI (2016) and AS 4600 (2018) to ensure users can run their DSM designs from start to finish.

Screenshot of a SkyCiv Direct Strength Method factors tool: left graph shows axial load factors vs half-wavelength, right graph labeled 'Stress Plot', with a Buckling Factors panel on the right listing Local/Distortional factors and a Submit button.

Concrete Section Design

SkyCiv’s Concrete Section Designer (CSD) is powered by Section Builder and allows you to design complex reinforced concrete sections to ACI, EN, CSA, AS design codes and more!

Our CSD handles any concrete shape and reinforcement configuration. Calculate member flexure and compression capacity along with powerful 3D interaction diagrams.

Screenshot of SkyCiv design dashboard: left panel shows 'Design Completed' with a green 'Recalculate' button and 'Design Checks' indicating 7.6% utilization for axial force N and bending moments; center features a 3D structural model with coordinate axes, and right shows a large curved plot of moment data (My vs Mz).

Integration & Cloud Storage

Section Builder is fully integrated with SkyCiv S3D and SkyCiv Beam, allowing for custom sections to be directly used.

Sections can also be saved to the cloud for easy access across modules.

SkyCiv interface showing a blue-outline structural frame with nodes on a grid, left shape library and right section properties panel.
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Watch the Section Builder Demo

Powerful Integrations,
Zero Disruption

supported DESIGN CODES & MANUFACTURERS

Globally supported database of
over 25,000 sections

Find your exact section in seconds by browsing or searching by region, code or manufacturer.

Supported Libraries

SkyCiv Section Builder supports leading design codes and manufacturer libraries across aluminium, cold-formed steel, steel and timber. Our database spans across major regions listed.

Our team is always expanding our library to prioritize support and stay up to date with the latest design codes and standards.

Can’t find a section? Contact our team at [email protected] to request it be added.

List of country options with small flags: American, Australian, British, Canadian, Chinese, European, Indian, Mexican, New Zealand, Singaporean, South African.
Region Supported Design Codes & Manufacturer Libraries
United States ADM, AISC, AISI, NDS, SJI, CEMCO, ClarkDietrich, MarinoWARE, Purlin Mill, SSMA, SUPREME
Australia Steel (250 Grade, 300 Grade), DuraGal, Aluminium, Scaffold, Timber, DindasLVL, FuturebuildLVL, GluLam, Hyne, Lysaght, FrameCAD, Metroll, Millform, Enduroframe, Steeline, Stramit, Stratco, Studco
Canada CISC, CSSBI, CWC, BEHLEN, CEMCO, ClarkDietrich, ExSteel, MarinoWARE, Purlin Mill, SUPREME
United Kingdom Steel, Cold Formed Steel, Timber, Ayrshire, MetPurl, Kingspan
Europe Steel, Timber, Lindab, Metsec, Ruukki
New Zealand Aluminium, Metalcraft, Structural Steel, DuraGal, Timber (NelsonPineLVL)
Mexico IMCA (Steel, Cold-Formed Steel)
Singapore Steel (Consteel)
South Africa SANS (Steel, Cold-Formed Steel)
China Steel
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testimonials

Trusted by thousands

The ease of use and the presentation of the results are both awesome. I have had ongoing interaction with the support team and everyone is excellent.

Mitch Frumkin

Mitch Frumkin

CEO OF KIPCON

It is used for various civil and mechanical engineering courses and the students love it. We are happy with the continuous updates to SkyCiv as well, highly recommended.

Mitch Frumkin

Dr Kenneth R. Leitch

Assoc. Prof. at Texas A&M

It was easily the most intuitive package available to learn; it is particularly easy to build the 3D model and define nodes, members, supports, materials, sections, then apply loads & combinations.

Mitch Frumkin

Stuart Agars

Managing Director of Struct-Sure Limited

SkyCiv has been a great tool to help efficiently and clearly document and update design results for a member of a small company with multiple responsibilities.

Mitch Frumkin

Lydia Fahrenkrug

Engineer at MT Solar

PRICING

Access SkyCiv Professional

Flexible plans for every team size.
No lock-in contracts, cancel anytime.

case studies

Real projects using SkyCiv

Intuitive Interface

Our easy to learn, powerful to use, intuitive interface allows you to quickly access all the features you need. Packed with smart features like the Pen tool, Repeat/Mirror, and Bulk Editing.Your Content Goes Here

Comprehensive Design Code Support

Our software supports a comprehensive array of steel, wood, and concrete design codes including AISC, EN, AISI, NDS, AS, and CSA.

API Technology

SkyCiv is a customised solution featuring seamless integrations, easy implementations, automated reports and a scalable design and architecture.

24/7 Customer Support

SkyCiv is a customised solution featuring seamless integrations, easy implementations, automated reports and a scalable design and architecture.

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Trusted by 10,000+ Engineers Worldwide

Powerful cloud-based structural analysis and design software

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