The Temple Institute: In-Depth Temple Study: The Three Woodpiles
 
The Three Woodpiles: Dimensions

The large woodpile was arranged on the southeast side of the mizbeach. Parallel to it, on the southwest side, the woodpile for the incense service was arranged. Anywhere else on the top of the mizbeach the woodpile for the eternal fire could be arranged. The woodpiles were constructed in a crisscross fashion. This ensured that air could circulate and kindle the fire. 
Contents:   Part I,    Part II,    Part III,    Part IV,    Part V,    Part VI,    Part VII