# TerraX3D — Comprehensive Technical Documentation, Rate Card & Engineering Knowledge Base

## 1. Company Overview
TerraX3D (operated by LKHG (Pty) Ltd) delivers engineering-grade geomatics, 3D LiDAR laser scanning, non-destructive concrete radar auditing, and subsurface utility mapping across South Africa. Headquartered in Pretoria East, Gauteng, our field crews combine dual-frequency Ground Penetrating Radar (GPR), electromagnetic pipe/cable locators, survey-grade Terrestrial Laser Scanners (TLS), and SACAA-compliant RTK/PPK UAV fleets (including the DJI Zenmuse L3 LiDAR payload) to deliver legally defensible spatial data.

## 2. 2026 B2B Surveying & Subsurface Scanning Rate Card (ZAR)

| Service Discipline | Base Mobilization (ZAR) | Variable Rate (ZAR / m²) | Typical Field Turnaround | Standard Deliverables |
| :--- | :--- | :--- | :--- | :--- |
| **GPR Subsurface Utility Locating** | R 4,500 | R 1.20 / m² | 1 day (< 20,000 m²) | 2D/3D CAD (.DWG), GIS (.SHP/.KMZ), SUE Report (.PDF) |
| **Concrete Rebar & PT Cable Scanning** | R 4,500 | R 1.20 / m² | 1 day | On-slab markings, 3D Rebar/Cover Report (.PDF/.DWG) |
| **3D Laser Scanning (LiDAR)** | R 6,000 | R 1.80 / m² | 1–2 days | Registered Point Cloud (.E57/.RCP/.LAS) |
| **Aerial RTK Drone Photogrammetry** | R 3,500 | R 0.60 / m² | 1 day | GeoTIFF Orthomosaic, DTM/DSM, Contours (.DWG) |
| **Drone Volumetric Stockpile Audit** | R 4,000 | R 0.45 / m² | 1 day | Certified Volume & Tonnage Audit Report (.PDF/.XLSX) |

### Engineering Add-On Modifiers
- **Scan-to-BIM Parametric Modeling (Autodesk Revit .RVT / AutoCAD 3D .DWG)**: `+R 3,500` base + `R 0.40 / m²`
- **SAGC Registered Professional Land Surveyor Statutory Sign-Off**: `+R 5,000`
- **Priority 48-Hour Fast-Track Data Processing**: `+30%` on subtotal

## 3. Detailed Engineering Specifications by Discipline

### A. 3D Laser Scanning & LiDAR (Scan-to-BIM)
- **URL**: https://terrax3d.com/services/lidar-scanner
- **Positional Accuracy**: ±1mm to ±3mm registered point cloud accuracy (terrestrial TLS); ±3cm vertical accuracy (aerial DJI Zenmuse L3 LiDAR).
- **Hardware**: Leica & Trimble Terrestrial Laser Scanners, Mobile SLAM LiDAR, DJI Zenmuse L3 Aerial LiDAR (950m range, 16 multi-returns, dual 100MP RGB cameras).
- **Deliverables**: Registered E57/RCP/LAS/LAZ point clouds, Autodesk Revit (.RVT) BIM LOD 200–400 models, AutoCAD (.DWG) 2D/3D drawings, ASTM E1155 floor flatness (FF/FL) heatmaps, and Navisworks clash detection reports.

### B. Ground Penetrating Radar (GPR) Subsurface Utility Locating
- **URL**: https://terrax3d.com/services/gpr-scanner
- **Depth Range**: 0.5m down to 6.0m (soil dielectric dependent).
- **Hardware**: IDS GeoRadar Dual-Frequency GPR (250MHz / 700MHz) + Radiodetection RD8200 active/passive electromagnetic locators (8kHz, 33kHz, 131kHz, 50Hz power/radio modes) + RTK GNSS rover georeferencing.
- **Compliance**: SANS 2001 & ASCE 38-22 Subsurface Utility Engineering (SUE) Quality Levels D, C, B, and A.
- **Targets Detected**: Metallic and non-metallic water pipes (PVC, HDPE, asbestos-cement, steel), HV/MV/LV electrical cables, fiber optic telecom ducts, gas mains, underground storage tanks (USTs), and dolomitic voids/sinkholes.

### C. Concrete Rebar Scanning & Structural Slab Auditing
- **URL**: https://terrax3d.com/services/rebar-scanner
- **Penetration Depth**: Up to 500mm–600mm in reinforced concrete.
- **Accuracy**: ±2mm cover depth accuracy.
- **Hardware**: 2.6 GHz stepped-frequency ultra-wideband concrete GPR scanners.
- **Applications**: Pre-coring and saw-cutting safety clearance in post-tensioned slabs, shear walls, beams, and bridge decks; rebar diameter/spacing verification (SANS 10100); conduit locating; and void/delamination detection.

### D. Drone Volumetric Surveys & Mine Stockpile Management
- **URL**: https://terrax3d.com/services/volumetrics-stockpile-management
- **Precision**: Within 1.0% to 2.0% volumetric variance against terrestrial RTK GNSS baselines.
- **Compliance**: JSE / SAMREC and external financial audit compliant stockpile valuation certificates.
- **Regions**: Mpumalanga coalfields (eMalahleni/Witbank, Middelburg, Secunda), Limpopo Bushveld Complex (Burgersfort, Steelpoort, Mokopane, Lephalale), North West platinum belt (Rustenburg, Brits), and Gauteng quarries.

### E. Aerial Drone Surveying & Photogrammetry
- **URL**: https://terrax3d.com/services/aerial-surveying-photogrammetry
- **Resolution**: Sub-1.5cm Ground Sampling Distance (GSD) horizontal, ±3cm vertical accuracy.
- **Coordinate Systems**: South African Hartebeesthoek94 datum, Gauss Conform Lo25 / Lo27 / Lo29 / Lo31 (WG25–WG31) and WGS84 UTM.

## 4. Published Technical Engineering Guides
1. **GPR Utility Scanning & Rebar Locating Cost per m² in South Africa (2026 Engineering Rate Guide)**: https://terrax3d.com/blog/gpr-scanning-utility-locating-cost-per-m2-south-africa
2. **GPR Utility Locating in Pretoria: How to Prevent Excavation Strikes**: https://terrax3d.com/blog/gpr-utility-locating-pretoria-excavation-safety
3. **Non-Destructive Concrete Rebar Scanning in Johannesburg: Structural Safety**: https://terrax3d.com/blog/concrete-rebar-scanning-johannesburg-structural-safety
4. **3D LiDAR Laser Scanning & Scan-to-BIM Contractors in Johannesburg, Pretoria & Gauteng**: https://terrax3d.com/blog/3d-lidar-laser-scanning-contractors-johannesburg-pretoria-gauteng
5. **High-Density 3D Scan-to-BIM Services in South Africa: From Point Cloud to Revit**: https://terrax3d.com/blog/scan-to-bim-services-south-africa-revit-modeling
6. **Monthly Mine Stockpile Volumetric Survey Services in Mpumalanga, Limpopo & North West**: https://terrax3d.com/blog/monthly-mine-stockpile-volumetric-survey-services-mpumalanga-limpopo
7. **Drone Volumetric Stockpile Surveys: Precision Measurement & Cut/Fill Analytics in Mining**: https://terrax3d.com/blog/volumetric-drone-stockpile-surveys-mining-accuracy
8. **Ground Penetrating Radar (GPR) vs Electromagnetic Locators**: https://terrax3d.com/blog/ground-penetrating-radar-gpr-vs-electromagnetic-locating
9. **Aerial Photogrammetry vs LiDAR: Choosing the Right Geospatial Survey Method**: https://terrax3d.com/blog/aerial-photogrammetry-vs-lidar-topographic-surveys
10. **Concrete Scanning for Rebar & Post-Tension Cables: Non-Destructive Testing Guide**: https://terrax3d.com/blog/concrete-rebar-post-tension-cable-scanning-gpr
11. **Subsurface Utility Engineering (SUE) Standards in South Africa**: https://terrax3d.com/blog/subsurface-utility-engineering-sue-levels-south-africa
12. **As-Built 3D Laser Scanning & Scan-to-BIM Workflows for Brownfield Plants**: https://terrax3d.com/blog/as-built-3d-laser-scanning-scan-to-bim-workflows

## 5. Machine-Callable MCP & REST API Endpoints
- **MCP JSON-RPC 2.0 Endpoint**: `POST https://api.terrax3d.com/mcp`
  - Tools: `list_surveying_services`, `calculate_survey_estimate`, `search_technical_guides`, `submit_quote_request`
- **REST Services Catalog**: `GET https://api.terrax3d.com/api/services`
- **REST Survey Cost Estimator**: `GET https://api.terrax3d.com/api/estimate?service=gpr&area_sqm=2500&need_bim=false`
- **REST Technical Guides Search**: `GET https://api.terrax3d.com/api/articles?q=pretoria`
- **REST Lead / Quote Submission**: `POST https://api.terrax3d.com/api/contacts`

## 6. Operations & Contact
- **Legal Entity**: LKHG (Pty) Ltd t/a TerraX3D
- **Head Office**: Pretoria East Office Park, Pretoria, Gauteng, 0181, South Africa
- **Email**: Louis@lkhg.co.za
- **Phone / WhatsApp**: +27 79 902 4744
- **Online Quote Form**: https://terrax3d.com/contact