Express 3D Laser Scanning and BIM Model Delivery for a 170,000 sq. ft. Public Health Center in 18 Days
We completed a full-scope 3D laser scanning and structural–engineering BIM model development project for an operating government outpatient clinic in Oklahoma City.
The facility included 170,000 sq. ft. of interior space and approximately 258,000 sq. ft. of exterior and façade areas.
While a project of this scale typically requires more than six weeks for full Scan-to-BIM delivery, our team completed the entire scope — from field scanning to final Revit model — in just 18 business days, maintaining strict survey accuracy standards.
Project Overview
Project Type: Express 3D Laser Scanning & Scan-to-BIM for Government Renovation
Location: Oklahoma City, USA
Interior Area: 170,000 sq. ft.
Exterior Area: 258,000 sq. ft.
Client Objective: Rapid creation of a complete project database (RGB point cloud + coordinated architectural & engineering 3D model)
Critical Constraint: Execution inside a fully operational healthcare facility under government contract timelines
Key Project Challenges
- Extremely compressed delivery schedule (18 days instead of 6+ weeks)
- Large-scale facility with complex engineering systems
- Active hospital environment requiring non-disruptive fieldwork
- Government-level documentation standards and QA requirements
Technical Specifications
Scanning Method:
Terrestrial 3D laser scanning with photorealistic RGB capture
Point Cloud Density:
1,000 points/m² (suitable for 1:50 documentation scale)
Geometric Accuracy:
±5 mm at 10 meters
Deliverable Formats:
.RCP, .E57 (point cloud)
.RVT (Revit BIM model)
Accelerated Delivery Workflow (18-Day Sprint)
Days 1–5 – Field Scanning
High-speed terrestrial scanning of all interior spaces and building façades, organized in structured zones to maintain hospital operations.
Days 1–6 – Parallel Data Processing
Point cloud registration, alignment, and segmentation performed simultaneously with field scanning.
Data was organized by floors, façades, and roof structures to accelerate modeling.
Days 7–17 – BIM Modeling & Drawing Production
Intensive development of:
- Architectural plans
- Sections
- Elevations
- Structural and visible MEP systems
All documentation prepared at 1:50 scale directly from registered point cloud data.
Day 18 – Final QA & Delivery
Internal quality control
Accuracy verification
Preparation of technical documentation
Secure data transfer to client
Results Delivered
1. Complete RGB Point Cloud
- Fully registered and structured dataset
- Delivered in .RCP and .E57 formats
- Organized by floors and systems for ease of use
2. Coordinated 3D BIM Model
- Architectural and engineering model in Revit (.RVT)
- All visible building systems represented
- Structured for further renovation and coordination work
3. Technical Accuracy Report
- Methodology documentation
- Accuracy parameters
- Quality assurance confirmation
4. 12 Working Days Saved
Compared to a standard 6-week workflow, the project was completed nearly two weeks ahead of traditional timelines — a critical factor in government renovation planning.
5. Remote Client Convenience
Thanks to RGB scanning, the client received:
- A colorized 3D environment
- The ability to perform virtual measurements
- Reduced need for repeated site visits
- Faster architectural decision-making
The architectural team was able to analyze and verify building conditions without physical presence on site.
Project Impact
This case demonstrates how an optimized Scan-to-BIM workflow, parallel data processing, and disciplined team coordination can significantly reduce delivery time without compromising engineering accuracy.
Delivering a 170,000 sq. ft. healthcare facility model in 18 days required not only technical capability but also strategic project management under operational constraints.
