Precision in Practice: On-Site Verification of Elevator Shaft Parameters

Project Context​
During the planning phase, Fuji’s engineers and the client’s construction team conducted critical field verifications – including an impromptu sidewalk discussion to resolve discrepancies between architectural plans and actual site conditions.
​Core Technical Tasks​
​Shaft Dimensional Accuracy Check​

Measured actual vs. designed:

Hoistway width: 2150mm (design) vs. 2135mm (field)
Pit depth: 1450mm (design) vs. 1390mm (field)
Identified 8mm concrete overpour on landing thresholds

​Load Capacity Alignment​

Reconciled:

Rated load: 1000kg (client brief)
Structural beams: 1275kg max (architectural plans)
EN 81-20 safety margins

​Interface Coordination​

Confirmed:

Machine room HVAC duct routing
Fire-rated hoistway door seals
Emergency call system cabling paths

​On-Site Workflow​
​Document Cross-Reference​
Compared 3 data sources in real-time:
① Original elevator specification sheets (Fuji)
② As-built structural drawings (Architect)
③ Laser-scanned point cloud data (Contractor)
​Decision Logging​
Updated 14 revision tags in the project BIM model during discussions, including:

Adjusted car frame dimensions (+12mm clearance)
Relocated COP panel mounting position

​Why Field Verification Matters​

23% of elevator installation delays stem from dimensional mismatches between plans and built structures (2023 Elevator Industry Report)
On-site collaboration reduces RFI response time by 60% compared to email chains

​Client Feedback​
“Having both engineering and construction teams physically trace the shaft parameters eliminated weeks of back-and-forth. We caught a critical beam conflict that 2D plans didn’t show.”