SkyCiv Section Builder

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

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Low-angle view of two glass-and-steel skyscrapers converging toward the center, forming a sharp V against a bright sky.

Reliable, Easy to Use Design Software

SkyCiv Section Builder analysis

Capabilities for modelling and analysing simple to complex structures.

SkyCiv Section Builder Overview

Build and calculate section properties for a wide range of shapes using SkyCiv Section Builder! Build your sections using our templates, draw using points or line paths, or import a DXF file for CAD! 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.

Laptop screen showing a structural design tool with a blue I-beam model on a grid.

WHY ENGINEERs SWITCH

Structural analysis software that runs the full workflow

Easy and powerful FEA analysis

Run linear, non-linear, buckling and dynamic analysis within a single solver. No separate modules for complex analysis types.

Integrated design checks

Steel, concrete, timber and cold-formed design modules run directly on your analysis results. No exporting, re-entry or version mismatches.

Detailed calculation reports

Every formula, design check and
reference is shown in full, so you can defend every number, not just the result.

WHY ENGINEERs SWITCH

What SkyCiv Section Builder Offers

Capabilities for modelling and analysing simple to complex structures.

Standard templates and database of sections

Analyze sections from SkyCiv’s comprehensive library of over 15,000 standard shapes from the US, UK, Canada, Europe, Australia, India, China, Mexico 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

  • Hollow Triangular

  • Box Girder

  • Multiple Cold Rolled Shapes

  • Change dimensions via the form or dimension lines

SkyCiv section builder UI showing a blue I-beam profile with labeled dimensions; left navigation panel and right properties panel (W10x22) visible.

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.

SkyCiv structural analysis UI showing a blue bike frame outline built from nodes on a grid, with side panels for sections and properties visible on the left and right.

Built-up Sections

Model your built-up section by adding multiple shapes:

  • Add shapes from one of our many templates.

  • 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 Builder showing a blue I-beam cross-section on a grid, with left controls and right property panels visible.

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.

SkyCiv section builder UI with a blue-outlined I-beam on a grid; left shape templates, right properties panel.

Concrete Section Design

SkyCiv’s General Section Designer plugin allows you to design complex reinforced concrete sections to ACI, EN, CSA, AS design codes and more!

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

Modal titled 'Column M-N Interaction Curves' showing a 3D globe with colored axes on the left and a red polygonal M-N interaction curve on a grid on the right; includes 'M-M Curve' and 'N-M Curve' toggle buttons and a Close button.

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 and runs a finite strip method calculation to obtain the 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.

SkyCiv Section Builder: left DSM plot (axial vs half-wavelength), right stress plot with a toggle; dark side panel shows buckling factors.
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supported standards

Globally Supported Design Standards

Capabilities for modelling and analysing simple to complex structures.

DESIGN STANDARDS

Structural design codes

Complete support for local design standards across steel, concrete, timber and more

Category Supported Codes
Steel design AISC 360, AS 4100, CSA S16, BS 5950, Eurocode 3 (EN 1993), IS 800, NZS 3404
Reinforced concrete ACI 318, AS 3600, Eurocode 2 (EN 1992), CSA, BS
Timber design NDS, AS/NZS 1720, Eurocode 5, CSA
Cold-formed steel AISI, Eurocode, AS/NZS 4600
Connection design AISC 360, Eurocode, AS 4100
Wind and seismic loading

Watch the Section Builder Demo

Tutorial’s Library

the skyciv difference

Make the Switch to SkyCiv

Everything your team needs to work faster,
from anywhere.

Work faster with integrated workflows

Your model integrates with more tools, saving you time and energy. Design faster, smarter and with less margin for error.

Workflow diagram showing completed steps: Model1, Analysis, Design, leading to Report (all steps marked complete).
Splash screen of a design app with a light blue geometric logo in the center and 'START DESIGNING' text; a blue cursor points at the text.

Skip the Installation

SkyCiv runs entirely in the cloud. No downloads, updates, or IT setups are required. Simply log in from any browser and start working instantly.

Engineering Support

When issues arise, our qualified engineers will quickly help you resolve them, keeping your projects on track without delays or downtime.

Two chat bubbles with avatars on a glowing backdrop: white message questions a mismatched steel-column load combination; blue reply explains wind load factors for serviceability.
UI panel showing a test results list; highlighted row reads 'Combined Action Ratio' with 0.87, reference AISC 360-16 H1-1a, status PASS.

Easy input, easy output

SkyCiv models take minutes to set up, and the results are all clearly labelled – accompanied with detailed design reports for full calculation transparency.

Powerful Integrations,
Zero Disruption

Plus an open API to build your own custom solutions

Powerful Integrations,
Zero Disruption

testimonials

Trusted by thousands

160 +

Countries using SkyCiv

30 min

Average response time

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 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

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

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

case studies

Real projects using SkyCiv

PRICING

Access SkyCiv Quick Design

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

Get in Touch

Email
Location

Unit 510, 55 Holt Street Surry Hills
NSW 2010 Australia

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