Case 002 UK Construction

Timber Frame Configurator

01 — Problem

Designing even a small timber outbuilding to UK standards means juggling TRADA span tables, Approved Document U-value targets and permitted-development height limits across separate references, then producing cut lists and drawings by hand. Errors surface on site, where they are expensive.

02 — Fix

A configurator that derives the full stud-wall frame — studs, plates, lintels, noggings, rafters, restraint straps — live from the building's dimensions and roof type, with a 3D view, per-wall elevations, a packed cut list with costs, and a compliance panel that evaluates the design against the regulations as you change it. A separate joint-aware traditional joinery designer and a masonry module share the same codebase.

Exhibit — UK Construction — Exhibit 002-A

03 — Proof

Tests passing: 132 xUnit
Roof types framed: 4 (mono, apex, hip, flat) incl. hip and jack rafters
Compliance checks: Part L U-values, Part B, Part F, Schedule 2 Class 6, PD Class E height limits
Span tables: TRADA C16/C24 lookups for joists, rafters and stud heights
Thermal model: BS EN ISO 6946 combined-method U-values with thermal-bridge correction
Research base: 21 vetted UK regulation/practice documents, corrections verified by a working UK timber framer

04 — Method

.NET 10 Blazor Server with WebGL 3D and SVG drawing views; the roadmap is deliberately split into per-feature docs so multiple agents build phases in parallel, with cross-agent audits feeding a tracked punch list.