concreteproperties — The Complete Guide: Free Analysis of Reinforced Concrete Sections of Any Shape
concreteproperties is an open-source Python library (MIT licence) by Robbie van Leeuwen for analysing reinforced concrete and composite sections. It is built on the same geometry engine as sectionproperties, so you can define any shape — including holes, corners and a mix of several materials.
concreteproperties
Robbie van Leeuwen
A Python library for reinforced and composite concrete sections of any shape: moment-curvature, interaction diagrams, biaxial bending and cracked stresses.
Get it from the vendorWhat you get
- Section properties — centroid, second moments of area and stiffness, for cracked and uncracked sections.
- Moment-curvature — a full curve up to failure, using material laws you choose.
- Interaction diagrams — axial force against moment, for column checks.
- Biaxial bending — a failure surface for columns under moments in both directions.
- Stresses — stress plots in concrete and steel for any load state.
What to know
This is a library for writing code, not a windowed program. It suits an engineer who knows Python and has met a section that an ordinary spreadsheet does not cover — an L-shaped column, a wall with an opening, a composite steel-concrete section. Check the results against a simple hand calculation before using them on a project, and make sure the material laws match the code you design to.
Related tools
For geometric properties of any section — sectionproperties. For presenting the calculation as a readable report — handcalcs. For computing the forces in the frame — PyNite.
sectionproperties
Robbie van Leeuwen
Section properties of any shape by finite elements — inertia, torsion, warping, shear centre and stresses in the section.
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handcalcs
Connor Ferster
Turns Python calculations in Jupyter into hand-calc style sheets — formula, substituted values and result, in LaTeX.
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Pynite
D. Craig Brinck (JWock82)
A Python library for 3D finite element analysis of frames, plates and shear walls — static, P-Δ, modal and PDF reports.
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Calcpad
Proektsoft EOOD
Engineering calculation sheets: write formulas with units in plain text and get a formatted calculation report. A free Mathcad alternative.
Get it from the vendorThe bottom line
concreteproperties fills a real gap: unusual concrete sections, analysed fully and transparently. It is completely free, including for commercial use.