Reinforced Concrete Section Designer

Browser-based section resistance and factored demand checks for reinforced concrete under axial force and biaxial bending.

Three-dimensional P–Mx–My resistance surface with a directional meridian, fixed-axial-force contour and section data

Overview

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Reinforced Concrete Section Designer evaluates the axial-force and biaxial-bending resistance of short reinforced-concrete cross sections. It brings irregular concrete geometry, openings, discrete reinforcement, material response, P–Mx–My resistance surfaces and factored demand checks into one browser workspace. Its current scope is section resistance and demand checks, not complete column or member design.

Technical capabilities

The application takes an irregular reinforced-concrete section from a verified numerical model to auditable P–Mx–My resistance results and a factored section demand check.

Technical scope

Build multiple polygonal concrete regions and openings, with discrete reinforcement and material assignments.
Evaluate section response using independent stress–strain integration and equivalent rectangular stress-block methods.
Inspect nominal and design P–Mx–My surfaces, directional meridians, fixed-axial-force contours and the underlying chart data.
Check factored section demands with utilization, capacity intersections, solver convergence and a compatible strain field.
Use the implemented KDS section-check routes; ACI, Eurocode and AS profiles remain calculation previews rather than released code checks.
Export browser-side projects, PDF design-preview reports, calculation workbooks and Excel or DXF mesh audit data.

Images

Verified concrete integration mesh with Gauss points and discrete reinforcement fibers — Numerical mesh and Gauss integration points

Directional P–M resistance curve with a three-dimensional surface and fixed-axial-force Mx–My contour — Directional resistance and fixed-axial-force results

Factored demand check with utilization, converged section strain field and resistance charts — Demand check and compatible section field

Contribution

Build an editor for irregular concrete sections, openings and discrete reinforcement.
Expose the verified numerical mesh, interaction surfaces and chart data for review.
Provide section-level demand checks and exportable engineering evidence.