Engineering firms holding facade inspection contracts need systematic, high-resolution documentation of every building face, with coverage organized by floor and bay and paired thermal imagery to identify moisture and delamination not visible in RGB. Scaffolding access is expensive and slow. Drone capture, combined with structured documentation, covers the same building faces in a fraction of the time.
The resulting deliverable needs to be usable by the engineer of record without installing software, loading a project file, or waiting on a cloud platform. It needs to open offline, on any laptop, and serve as an engineering documentation record.
Drone Capture
Each building face flown systematically at consistent altitude with overlapping passes. RGB and thermal captured simultaneously. Coverage organized by face, one flight sequence per elevation, named by building side. Thermal camera paired to RGB by filename index.
Zone Mapping
Engineering elevation drawing loaded as base layer. A grid is applied to match the floor and bay structure of the building. Each cell corresponds to one inspection zone. Zone dimensions are adjusted to the actual structural grid, not a uniform default. All imagery is then assigned to zones by floor and bay position.
Documentation Package Built
Export script assembles the deliverable: engineering drawing per face, all imagery sorted into face/zone directories, a pre-built viewer, and a CSV of any notes captured during QA review. The deliverable is a single zip file. No cloud upload, no login.
Engineering Review
Engineer of record unzips and opens viewer.html in any browser.
Zones are visible on the elevation drawing. Each zone opens to the paired RGB and
thermal images. Engineer assigns condition ratings (Safe / SWARMP / Unsafe),
observation categories, notes, and annotates directly on the imagery. Work is saved
as a JSON file and loaded back in later sessions. CSV and flagged-zone exports
feed downstream reporting.
Offline HTML Viewer
Self-contained interactive report. Opens in any browser. No installation. Works on an airgapped laptop. Engineering drawing with interactive zone grid. Each zone contains its image pair and annotation tools.
Condition Documentation Tools
Safe / SWARMP / Unsafe rating per zone. FISP-standard observation categories (Spalling, Cracking, Efflorescence, Rust Staining, Missing Mortar, Exposed Rebar, Delamination, Staining). Free-text notes. Flag for follow-up checkbox.
Image Annotations
Circle, box, and arrow tools drawn directly on the RGB/thermal image pair. Color-coded by observation category. Undo/redo. Annotations saved to JSON alongside ratings and notes. Persist across sessions.
Export Outputs
CSV export of all zone data (face, floor, bay, rating, category, notes). Flagged zones as plain-text report. Print-ready PDF via browser print. One page per face with grid overlay and notes table.
| DMC Provides | Engineering Firm Provides |
|---|---|
| Drone capture of all building faces | Elevation drawings as grid reference |
| RGB + thermal image pairs per zone | Condition assessment and engineering judgment |
| Offline HTML viewer with annotation tools | FISP or inspection report authorship |
| CSV export and print report | Sign-off and submission to AHJ |
| Day-rate delivery, no subscription | Client relationship and contract |
See it working
The interactive demo uses a fictional building with pre-loaded inspection data. All annotation, export, and print functions are operational.
Open Interactive Demo Read Case Study