#design-fires

A dark modern living room at night where a small flame burns on a sofa cushion, spreading outward in a glowing ring of fire across the fabric while thin smoke gathers under the ceiling and a wall clock hangs in the shadows — the first seconds of fire growth.

🔥 Fire Fundamentals July 21, 2026 · 14 min read

The t-Squared Fire: How Fire Growth Rate Shapes Escape Time

Slow, medium, fast, ultrafast: how the t-squared curve turns fire growth into numbers, and why modern fuels outrun its four classes.

A sofa fully engulfed in flames on a weighing platform beneath the stainless-steel exhaust hood of a furniture calorimeter in a fire research laboratory, with gas analyser racks beside it — the setup that measures the heat release rate of burning objects.

📊 Fire Testing July 3, 2026 · 12 min read

Heat Release Rate: Why HRR Is the King of Fire Science

Why heat release rate is the single most important number in fire science: how labs measure it, what it predicts, and why it outranks smoke toxicity.