Nine weeks end to end
Delivered two days ahead of the agreed date across all 24 floors
Commercial · Chicago, United States
A nine week architecture and MEP model for a Chicago office repositioning
A 1970s office tower was being repositioned for a new anchor tenant. Two earlier survey attempts had produced models the design team would not touch, so the developer needed a partner who could deliver a usable file, not just a scan converted to shapes.
Project facts
Scope, software and timeline at a glanceLocationChicago, United States
SectorCommercial real estate
ScopeArchitecture and MEP
Level of developmentLOD 350
SoftwareRevit, Navisworks
Building size1.1M sq ft, 24 floors
Scan positions940
Delivery time9 weeks
Project overview
A repositioning project that could not afford a third failed model
A 1970s office tower was being repositioned for a new anchor tenant, but the paper drawings on file were incomplete and wrong in several places, and two earlier survey attempts had produced models the design team refused to use.
We audited the existing scan data, rejected three floors with poor coverage and arranged a rescan within a week, then modeled architecture and MEP in parallel using dedicated discipline teams working inside the client Revit template from day one. Floors were released in batches of four so design work could start while later floors were still in production.
The full scope covered 24 floors and two basement levels, with shared coordinates matched to the site survey and a deviation report issued for every release so the client BIM manager could verify accuracy before sign off.
This project combined our architectural scan to BIM and MEP scan to BIM services. See more commercial real estate work on our industry page.
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Inputs and deliverables
What we received and what we handed back
A clear record of the data that came in and the files that went out.
Project inputs
- 940 registered scan setups in E57 format, captured across 24 floors and 2 basement levels
- Partial 1974 architectural drawings, used for reference only and not trusted for dimensions
- Client Revit 2023 template and BIM execution plan
- Phased site access agreed across a 9 week programme
- Two rejected legacy models from prior vendors, reviewed to understand what to avoid
Deliverables
- Federated Revit model, architecture and MEP, at LOD 350
- IFC4 export for consultants outside the Autodesk stack
- Floor by floor deviation QA report
- Full GA, RCP and section sheet set on the client titleblock
- Door, room and area schedules ready for leasing and design use
Key outcomes
Delivered ahead of schedule with zero rejected floors
Zero rejected floors
Every release accepted first time by the client BIM manager
4 mm average deviation
Verified against the registered cloud and reported floor by floor
Business impact
Recovered six weeks of lost schedule inside one quarter
Two failed vendor attempts had already cost the project six weeks before we were engaged. The verified model let the design team begin tenant improvement drawings two months earlier than the recovery plan assumed, directly protecting the developer leasing timeline for the new anchor tenant.
6 weeks of lost schedule recovered inside one quarter
Design work started 2 months ahead of the recovery plan
Anchor tenant leasing timeline protected
“The model came back inside our template with zero warnings. Our design team started work the same day it landed.”
DRD. ReynoldsBIM Manager, Architecture Practice
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