The building behind the fire · SDRG
Structural Decay Reference Guide
When fire in a box becomes a box on fire.
The Structural Decay Reference Guide catalogs 50 structural components and connection systems, explaining how they behave—and how they can fail—under fire exposure.
Then it goes one step further with Decay Assessment Time, or DAT: a conservative assessment point informed by the available fire endurance and failure research, prompting the fire officer to reassess the exposed component.
The SDRG also identifies Hidden or Unknown Structural Hazards—HUSH—and brings the supporting research into view.
Explore the component catalog, use the guide in training, or examine documented fires, their structural assemblies, and the questions they raise.
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Inside the guide
Concrete columns
A sample component page from the SDRG, showing decay indicators, assessment timing, identification, fire research, and failure behavior.
The existing SDRG app is available at its separate address.
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