Structural Calculator Coming Soon

Steel Frames Analysis & Design

Portal frame and moment frame analysis with AISC 360 capacity checks. Real-time member sizing, connection design, and step-by-step calculations — launching soon.

AISC 360 · LRFD / ASD · SI Units

Under Development

The Steel Frames Analysis & Design calculator is currently in active development. The page below previews the planned capabilities for the upcoming release. Sign in for early access and we will notify you the moment it ships.

Planned Capabilities

A complete steel frame analysis and design toolset — everything listed below is on the roadmap for launch.

Portal Frame Analysis

Single-bay and multi-bay portal frames with rigid or pinned base conditions, including gable configurations.

Moment Frame Analysis

Multi-story moment-resisting frames with rigid beam-to-column connections and lateral load distribution.

Member Capacity (P_n, M_n, V_n)

Axial, flexural, and shear nominal capacities computed per AISC 360 Chapters D, E, F, and G.

Combined Interaction (H1-1a / H1-1b)

Automatic evaluation of the governing interaction equation per AISC 360 Section H1 for combined axial and bending.

Section Classification

Compact, non-compact, and slender classification for flange and web per AISC Table B4.1a / B4.1b.

Column & Beam Design

Full design of columns and beams with W-shape databases, effective length factors, and bracing checks.

Connection Design

Bolted and welded connection design including bolt shear, bearing, block shear, and fillet weld capacity.

Drift & Stability Checks

Inter-story drift limits and P-Delta stability per AISC 360 Appendix 7 and ASCE 7 drift provisions.

LRFD and ASD Methods

Dual-format output: Load and Resistance Factor Design and Allowable Strength Design per AISC 360.

Interactive Section Graphics

Live I-section and HSS rendering with dimensions, bolt patterns, and weld details updating as you design.

PDF Export

Export professional calculation reports with frame geometry, loads, member checks, and AISC references.

How It Will Work

From frame geometry to a complete AISC 360 design in four simple steps.

Define Geometry & Loads

Enter frame dimensions, base conditions, and gravity, wind, and seismic loads at each node and member.

Select Sections

Pick W-shapes, HSS, or built-up sections for columns and beams from the integrated AISC section database.

Auto-Check AISC Criteria

Instantly run classification, P_n, M_n, V_n, H1 interaction, drift, and stability checks.

Export PDF

Download a full calculation report with geometry diagrams, results tables, and AISC clause references.

Standards & Codes

✓ AISC 360 — Specification for Structural Steel Buildings — Member strength, stability, and connection provisions will follow the latest AISC 360 edition.
✓ LRFD and ASD Dual Output — Simultaneous Load and Resistance Factor and Allowable Strength Design results for every member check.
✓ AISC Table B4.1 Section Classification — Width-to-thickness limits for compression flange, web in flexure, and web in compression.
✓ Chapter H Combined Forces — Interaction equations H1-1a and H1-1b for members subject to combined axial and flexural loading.
✓ Appendix 7 Stability & Direct Analysis Method — P-Delta effects and effective stiffness reductions for frame stability.
✓ SI Units Throughout — All inputs and outputs in kN, kN·m, mm, and MPa for international engineering practice.