Why Do Engineers Inspect Fireproofing? (Video)

“Hi, my name is Greg Batista here to answer another question from the internet.

SafetySam asks: Why do engineers check fireproofing on steel beams?

Because steel, while strong, loses strength quickly in fire. At about 1,100°F, steel loses more than 50% of its strength, and at 1,800°F it can fail completely. Fireproofing — whether spray-on material, intumescent paint, or encasement — buys time during a fire, keeping beams intact long enough for evacuation and firefighting. Engineers inspect fireproofing to ensure thickness, adhesion, and coverage meet code. If fireproofing is damaged or missing, the steel is vulnerable. In high-rises and condos, inspections confirm that one hidden but critical safety layer is in place.

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Authoritative references: NFPA 5000; Underwriters Laboratories (UL) fire resistance standards.

The author, Greg Batista, PE, CGC, SI is owner of G. Batista Engineering & Construction and is a nationally-recognized engineer and contractor with more than 35 years of experience and offices in Fort Lauderdale, Florida.