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This PE Day, I want to challenge how we think about engineering excellence. The Citicorp Center case is often taught as a story of “engineering courage” but it actually reveals something far more critical—engineering’s greatest failures aren’t calculation errors. They’re a result of communication breakdowns.

The Shocking Truth Hidden in Plain Sight
In 1978, William LeMessurier, one of America’s most distinguished structural engineers, discovered something that should have been impossible. His innovative Citicorp Tower design, located in New York City, had been fundamentally altered during construction and he didn’t know.

Welded joints specified for critical structural connections had been changed to bolts. The contractor’s reason? Bolts were cheaper and faster. The result? A building that could collapse in a 16-year storm.

But here’s the part that should terrify every professional engineer. LeMessurier only learned about this change AFTER a Princeton University student, Diana Hartley, asked questions about wind loads. The lead structural engineer didn’t know his own design had been compromised.

When Communication Fails, Buildings Fall
Let’s trace the communication catastrophe.
Design Phase: LeMessurier specifies welded joints for critical connections. The "why" behind this decision? Never formally documented.
Construction Phase: Bethlehem Steel proposes bolts to save time and money. Contractors approve the change. LeMessurier? Never notified.
The Hidden Vulnerability: For months, a building stands in Manhattan that could catastrophically fail. The designer doesn’t know. The city doesn’t know. Only luck and timing prevented disaster.
The Student’s Question: When Hartley asks about quartering winds, she’s routed to a junior engineer. Her concerns about missing peer review signatures are dismissed. “Everything is fine,” she’s told. It wasn’t fine.

Your PE License Makes You a Communications Officer
Here’s what PE Day 2025 must recognize: Your seal isn’t just technical certification. It’s your commission as a communications officer for public safety. Every PE must own three critical communication channels:

1. Design Integrity Communication
*Document the “why” behind every decision.
*Create traceable paths for all changes.
*Ensure economic pressures are explicitly discussed.
*Verify that design intent reaches construction.

2. Vertical Communication
*Establish clear escalation paths.
*Ensure every concern gets documented.
*Eliminate filtering based on source hierarchy. 
*Create written trails for safety questions.

3. Horizontal Communication
*Connect design, construction, and inspection teams. 
*Mandate real-time change notifications. 
*Require design review for ANY deviation. 
*Assign clear ownership of communication chains.

The Program Management Failure We Can’t Ignore
The Citicorp case isn’t about one engineer’s mistake. It’s about systemic program management failure. When design changes occur without designer knowledge, when student concerns can’t reach decision-makers, and when industry standards are ignored without documentation—that’s not an engineering failure—that’s a team failure.

Consider that multiple licensed professionals were involved. Engineers, contractors, inspectors, and project managers. Yet no one ensured that critical information flowed where it needed to go. The system failed because engineering was treated as individual work rather than a team responsibility.
 

Engineering IS a Team Sport
In team sports, communication isn’t optional, it’s survival. In football, the quarterback must know what the line is doing. In basketball, the point guard must see where teammates are moving. Lives don’t hang in the balance in these sports, yet communication is paramount.

In engineering, lives DO hang in the balance, yet we often communicate worse than sports teams. We rely on hierarchies that filter critical information. We make changes without closing loops. We assume someone else will handle the communication.

The Citicorp building stood on innovative stilts but nearly fell because of broken communication. This case teaches us that heroes who fix disasters they could have prevented aren’t heroes, they’re warnings. Real engineering excellence means building communication systems as strong as our structures.

When a student’s question reveals that welded joints became bolts without the designer's knowledge, that’s not a calculation error. That's a communication catastrophe. And it's preventable.

A Call to Action for Every PE
This PE Day, let’s pledge to make engineering communication as robust as our calculations taking the following actions:
✓Establish Communication Matrices: Define who tells whom about what, when, and how.
✓ Implement Change Control Protocols: No change without designer review and acknowledgment.
✓ Create Safety Voice Channels: Direct lines that bypass hierarchy for safety concerns.
✓ Document Design Rationale: Record why, not just what and how.
✓ Build Verification Loops: Confirm critical messages are received and understood.

A New Professional Standard 
Every project needs:
*A communication plan as detailed as the technical drawings.
*Change logs that trace from proposal to implementation.
*Regular cross-team synchronization meetings.
*Clear escalation paths for any concerns.
*Documentation that would satisfy a future investigation.

Because when we fail to communicate, we fail our fundamental duty to protect public safety.

Your PE seal makes you responsible not just for your calculations, but for ensuring every team member's knowledge reaches where it’s needed. The next Diana Hartley shouldn’t need extraordinary courage to be heard. She should have clear, established channels to speak through.

This PE Day, ask yourself:
*Who on my team might have critical information I’m missing?
*What changes might be happening without my knowledge?
*Which communication channels need strengthening?
*How can I make it easier for anyone to raise concerns?

This PE Day let’s commit to treating engineering as the team sport it truly is. Because in our game, when communication fails, the stakes aren’t points on a scoreboard, they are lives in our communities.