From the Coordinator's Desk
A note on why this work is necessary
In a city of one million people, each passing through an average of eleven doors per day, inefficient door operation produces a compounding loss of approximately 4.3 seconds per interaction. This amounts to 12,630 hours of lost human productivity. Daily. The figure does not account for injury.
These are not abstract numbers. They represent real time, belonging to real people, that cannot be recovered. The Department exists because someone has to quantify this. Someone has to document it. Someone has to care.
The field guides are free. The observations are documented. The only remaining variable is whether you will read them.
Current Field Guides
-
DPO-001Standard Door Operation: Push and Pull MechanismsFoundational documentation. Covers approach angle, handle engagement, threshold clearance, and close-behind protocol.
-
DPO-007Interior Door Operation: Pull Mechanisms (Revised)Updated to reflect handle-to-body pivot ratio variance observed in field studies Q3–Q4. Previous editions superseded.
-
DPO-012Revolving Door Protocol: Entry Sequencing and CadenceThe most misunderstood door type in common use. This guide addresses all known failure modes without exception.
-
DPO-019The Held Door: When Courtesy Becomes a LiabilityA frank examination of distance thresholds, obligation windows, and the true cost of unnecessary waiting imposed on others.