This work presents experimental data concerning the combustion characteristics of wood slabs of pinus (Pinus elliot) burned in a conical calorimeter. The mass evolution, normalized mass evolution, consumption rates, percent consumption rates, times of self-ignition, pyrolysis and flaming of square slabs (10x10x5cm 3) were obtained for a constant heat output of 2000 W. The behaviours of slabs with fibers parallel or perpendicular to the heating surface are compared during pre-heating, drying, self-ignition, pyrolysis, flaming, flame extinction and smoldering.