How Drawing Review Caught $890K in Data Center Load Conflicts
- Transformer and UPS weights exceeded the 250 PSF floor load, and chilled water crossed cable tray.
- Helonic checked power, cooling, and structural load on both PDF sets during a two-week 60% review.
- The owner's rep priced 156 loading issues at $890,000 if they had waited until after the slab pour.
Northern Virginia. $890K in avoided change orders.
Issues Detected
2,100+ across all systems
Estimated Savings
$890K avoided change orders
Key Focus
Power, cooling & structural
156 Equipment Loads Over a 250 PSF Data Center Floor
An owner's representative was reviewing a two-building data center campus in Northern Virginia. Power, cooling, and floor loading all depend on each other. One missed conflict becomes a change order measured in weeks and hundreds of thousands of dollars.
The design had redundant feeds with automatic transfer switches, hot-aisle and cold-aisle containment, and a raised floor for underfloor cooling. Structure was drawn for 250 PSF live load. Transformer banks and UPS units on the electrical sheets, weighed from the specs, exceeded that load in several bays.
Two people had two weeks to review more than 800 sheets before the 60% design development package could be approved.
Helonic Listed 2,100 Issues in a Two-Week DD Review
They uploaded architecture, structure, mechanical, electrical, plumbing, and fire protection for both buildings. The check focused on power routes, cooling routes, and structural load.
Helonic listed more than 2,100 issues. The critical ones were 156 spots where equipment weight exceeded the floor load, 234 chilled-water routes through cable-tray corridors, and 89 sprinkler heads sitting below the hot-aisle containment panels.
Another 312 findings sat on shared site utilities: generator yard routing, chilled-water interconnects, and fiber paths drawn by different engineering teams.
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$890,000 in Slab-Pour Change Orders Kept Out of 60% DD
The owner's rep sent the design team one package, sorted by priority and discipline. The 156 loading issues alone were estimated at $890,000 in change orders if the transformer banks and UPS units had to move after the slab was poured.
At 60% DD the design team moved the equipment and added reinforcement in the drawings. Chilled-water routes were redrawn before construction documents went out.
They approved the 60% package with those conditions instead of rejecting it and adding another full review cycle. The 18-month schedule stayed intact.
A six-discipline campus set sits toward the dense end. Across 1,000+ drawing packages Helonic has reviewed, sets with nine disciplines carried about 1.7 times the issue density of sets with four or fewer. See how much contingency a construction project should carry.
“We had two people and two weeks to review 800 sheets. Helonic found 2,100 issues, including the structural loading conflicts we priced at $890K if they had waited until after the slab pour.”
Frequently asked questions
How does Helonic handle data center-specific coordination?
On this campus it checked power routes, cooling routes, floor load against equipment weight, cable tray, and sprinkler clearance in the server halls.
Can Helonic verify structural loading against equipment specifications?
It compares equipment locations on the electrical and mechanical plans with the live load on the structural sheets, and flags bays where the spec weight exceeds that capacity.
Is Helonic useful for owner's representatives specifically?
This team used it at 60% design development, with two reviewers and a two-week window, then approved the package with the loading and routing conditions attached.
How does Helonic handle multi-building campus projects?
Each building is checked on its own. Shared utilities, including the generator yard, chilled-water interconnects, and fiber paths, are checked across both buildings.
Milind Sagaram
Co-founder & CEO, HelonicMilind is the co-founder and CEO of Helonic, where he leads product and go-to-market for AI-powered construction drawing analysis. He works closely with general contractors, project managers, estimators, and owners to understand how drawing quality drives project outcomes - and where AI can reduce RFIs, change orders, and rework. Milind has interviewed hundreds of construction professionals across project delivery roles, from preconstruction estimators at ENR top-400 contractors to facilities directors at institutional owners, and uses those conversations to shape both product direction and the way Helonic talks about the work.
- Construction project delivery and preconstruction
- RFI and change order economics
- Owner and GC workflows for drawing QA/QC
- Estimating risk and bid-stage scope assessment
How this page was researched: Reviewed against Helonic's 2026 drawing-analysis categories, RFI workflow, and product capabilities.
Last reviewed by Milind Sagaram · September 30, 2026