If there was fire suppression in the building, it likely didn't cover the construction scaffolding, and once that got burning, it was certainly hot enough to ov

If there was fire suppression in the building, it likely didn't cover the construction scaffolding, and once that got burning, it was certainly hot enough to overwhelm any sprinklers. There are four major phases in the life of a fire, incipient, growth, fully developed, and decay. Sprinklers are designed to keep a fire from progressing from incipient to growth. Once it makes that transition, the battle is lost.