Our Products

Draft Directly on Your PDF Plans

Import multi-page PDF construction documents and place structural elements right on the sheets. StruxDraft uses a high-performance canvas engine (react-konva) to keep everything smooth — even on large plan sets.

• Import single or multi-page PDF plan sheets
• Scale-aware drawing — set your drawing scale and all measurements follow
• Pan, zoom, and navigate pages with keyboard shortcuts
• 80-step undo/redo history

12 Structural Member Types

Everything you need for residential and light-commercial wood-frame, steel, and concrete design:

• Beams — DIM, GLB, LVL, PSL with multi-span, overhangs, partial loads, point loads
• Steel Beams — AISC W-shapes and HSS with full LRFD & ASD flexure, shear, and deflection checks
• Joists — Rectangle or polygon regions, DIM/LVL/TJI, variable spacing
• Headers — With trimmer and king stud detailing
• Columns — Auto-placed at beam endpoints with full Cp stability analysis
• Steel Columns — W-shape and HSS with AISC Ch. E axial compression, Euler buckling, rendered cross-sections
• Load-Bearing Walls — Stud size, spacing, and stacking
• Retaining Walls — Concrete cantilever with Rankine/Coulomb earth pressure, overturning, sliding, ACI 318-19 stem/toe/heel design
• Spot Footings — Full ACI 318 two-way punching shear, one-way shear, flexure
• Continuous Footings, Piers, Foundation Walls, Anchor Bolts

Real-Time Code Checks — Three Code Engines

Every member is checked against the governing code the moment you place or modify it. No "run analysis" button — the results are always live.

• Wood: NDS 2018 ASD — bending, shear, deflection (L/360 LL, L/240 TL), bearing, column stability (Cp)
• Steel: AISC 360-16 LRFD & ASD — flexure with Cb (lateral-torsional buckling), shear (Cv1), axial compression (Euler buckling)
• Concrete: ACI 318-19 LRFD — punching shear, one-way shear, flexure, development length, minimum reinforcement
• Retaining Walls: Combined ASD stability (overturning SF ≥ 1.5, sliding SF ≥ 1.5, bearing) + ACI 318-19 strength (stem, toe, heel)
• Load Combos: ASCE 7-22 ASD & LRFD: D, D+L, D+S, D+0.75L+0.75S, 1.4D, 1.2D+1.6L+0.5S — or custom database-driven sets
• Utilization badges: Green/yellow/red indicators on every member in the schedule

Connected Load Flow

The killer feature. StruxDraft traces gravity loads through the structure automatically:

• Joists → Beams: tributary load based on span and spacing
• Walls → Beams: PLF direct transfer
• Beams → Columns: R1/R2 reactions with DL/LL/SL disaggregation
• Columns → Footings: accumulated axial loads
• Circular reference detection prevents infinite loops

Customizable Material Libraries

Comprehensive built-in databases backed by a CSV-based database system with user-override layers — add your own materials, grades, and sections:

• Dimensional Lumber: 7 species × 5 grades = 31 combinations (NDS 2018 Supplement)
• Glulam: 23 sections, 24F-V4 balanced layup
• LVL: 31 sections, single through quad ply
• TJI I-Joists: 14 sections across 5 series
• PSL: 6 sections for post and beam applications
• Steel W-Shapes: Full AISC catalog — W4 through W14+ with d, bf, tf, tw, A, Ix, Sx, Zx, rx, Iy, Sy, Zy, ry
• Steel HSS: Rectangular and round hollow sections with A500 Gr. B/C grades
• Simpson Strong-Tie: 72+ hanger models and hold-down catalog with Fv/Fl/Fu capacities
• Custom Load Combos: Define project-specific ASD or LRFD load combination sets with custom factors
• 15 database tables total — materials, grades (wood/steel/masonry/concrete), shapes, connectors, load combos, governing codes

Schedules, Annotations & Export

Complete your deliverable without leaving the application:

• 10 schedule types — Beam, Steel Beam, Joist, Header, Column, Steel Column, Wall, Footing, Foundation Wall/Pier, Anchor Bolt, Hold-Down
• 13 annotation/markup tools — Line, Arrow, Pencil, Circle, Rectangle, Highlighter, Callout, Textbox, Section Callout, Span, Linear Measure, Polyline Measure, Area Measure
• Area & Polyline measurement — Polygon area calculation (SF/m²) and multi-segment path measurement
• PDF & DXF export — Multi-page PDF at 2× resolution; DXF with per-element layers for CAD import
• Calculation report — Full structural calc package with title block, design criteria, and member-by-member checks
• "Similar To" grouping — Link identical members to a parent for efficient scheduling
• Wall Highlighter — Strip architectural noise from PDF plans; isolate structural walls with keep/remove strokes or automatic layer detection

Quick Calcs — No PDF Required

CalcStudio is a standalone calculation environment that uses the same NDS 2018 / ACI 318-19 engine as StruxDraft — but without the PDF overlay. It's designed for situations where you need a fast, reliable answer:

• Proposal-stage sizing — quickly check a beam or footing before committing to a full design
• Field engineering — verify a member on-site without opening a full project
• Education & training — explore how design values, adjustment factors, and load combinations interact
• Independent checks — verify a StruxDraft design with a standalone calculation

Full Calculation Transparency

Every CalcStudio calculation shows step-by-step work — the same format you'd see in a hand calc or a ClearCalcs-style report. Variables, equations, code references, adjustment factors, and intermediate values are all visible.

• Same NDS 2018 ASD adjustments: CD, CM, Ct, CL, CF, Ci, Cr, Cp
• Same ACI 318-19 checks: punching shear, one-way shear, flexure, development length
• Printable calculation sheets for submittals
• Save/load calculation sets

One-Click Framing from Wall Geometry

AutoFrame analyzes your wall layout and automatically generates a complete framing plan — joists, beams, headers, and sizing — in seconds. Currently in beta, it already handles rectangular and non-rectangular rooms.

• Wall graph construction with adaptive endpoint clustering
• Planar face extraction for room detection (most-left-turn algorithm)
• Optimal joist direction perpendicular to short dimension
• Automatic beam subdivision when spans exceed limits
• Header detection for wall openings (doors, windows, garage)
• Iterative NDS-based member sizing through candidate sizes
• Per-room overrides: custom live load, room type, or manual framing

Streamline Your Plan Review

ArchScrub is a dedicated plan-review tool for structural engineers who spend hours marking up architectural drawings. Load PDFs, annotate structural concerns, and generate organized review comments — all from one interface.

• Import architectural PDF plan sets
• Structured annotation categories (structural, lateral, foundation, general)
• Auto-numbered review comments with sheet references
• Export annotated PDFs and comment logs
• Integration with StruxDraft for quick structural checks during review

Coming Soon — ArchScrub is currently in development. Sign up for updates on the contact page.