Question 920 Deck Safety

The correct answer is A) break up burning material. The straight stream capability of an all-purpose nozzle is used in fighting a Class A fire to break up and penetrate the burning solid materials, such as wood, paper, or cloth. This allows the water to reach the deeper layers of the fire, effectively extinguishing it. The straight stream provides the necessary force and water volume to disrupt the burning solids, which is the primary objective when addressing a Class A fire. The other answer choices are incorrect because: B) getting the most water possible is not the primary purpose of the straight stream, C) shielding firefighters is not the main function, and D) driving heat and smoke ahead is not the role of the straight stream in a Class A fire attack.