Epernon Fire Tests Programme – Phase 2 – Epernon Fire tests programme

In Phase 2, the experimental campaign included five large scale tests of timber compartments made of timber walls and ceiling, the interior surface of which was protected with different gypsum boards layouts (2*18 mm GBs or 2*25 mm GBs). Three opening factors were tested, and two types of mechanically loaded ceilings were investigated (CLT and timber-frame assembly). Furnace tests were also conducted to assess the performance of the gypsum board layouts under standard fire exposures (ISO fire and hydrocarbon fire). The campaign was conducted at the CERIB testing facility in Épernon, France.

Overview of the experimental programme


	Test 1	Test 2	Test 3	Test 4	Test 5
Surface of the compartment	21 m²
Fire load	950 MJ/m²
Mechanical load	1,35 kN/m²
Opening factor	0,032 m^1/2	0,032 m^1/2	0,142 m^1/2	0,065 m^1/2	0,065 m^1/2
Wall 1	180 mm CLT 2*18 mm GBs	180 mm CLT 2*25 mm GBs	180 mm CLT 2*18 mm GBs	180 mm CLT 2*18 mm GBs	180 mm CLT 2*18 mm GBs
Wall 2	180 mm CLT *Exposed to fire*	180 mm CLT *Exposed to fire*	180 mm CLT *Exposed to fire*	180 mm CLT 2*18 mm GBs	180 mm CLT 2*18 mm GBs
Wall 3	60 mm CLT 2*18 mm GBs	60 mm CLT 2*25 mm GBs	60 mm CLT 2*18 mm GBs	60 mm CLT *Exposed to fire*	60 mm CLT *Exposed to fire*
Wall 4 With openings	60 mm CLT 2*18 mm GBs	60 mm CLT 2*25 mm GBs	60 mm CLT 2*18 mm GBs	60 mm CLT 2*18 mm GBs	60 mm CLT 2*18 mm GBs
Ceiling	180 mm CLT 2*18 mm GBs	180 mm CLT 2*25 mm GBs	180 mm CLT 2*18 mm GBs	180 mm CLT 2*18 mm GBs	220 mm TFA 2*18 mm GBs

Phase 2 results

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