Firefighter Practice Exam

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To effectively breach a cinder-block wall, which blade should be used with the all-purpose saw?

  1. High-speed abrasive blade

  2. Carbide blade

  3. Aluminum oxide blade

  4. Ceramic blade

The correct answer is: Carbide blade

Using a carbide blade with an all-purpose saw is the most effective choice for breaching a cinder-block wall due to its durability and ability to maintain cutting efficiency when working with tough materials like concrete and masonry. Carbide blades are specifically designed to handle the abrasive nature of such materials, allowing for faster and more effective cutting compared to other types of blades. Carbide is a very hard material that resists wear and can cut through tough substrates without losing its cutting edge quickly. This is essential in emergency situations where time is critical, and the integrity of structural components may need to be compromised quickly. Other blades may either not perform adequately or could wear down quickly, making them less suitable for the task.

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