ACI Adhesive Anchor Installer Certification Practice Exam

What should be done with drill bits that are misshapen, broken, dirty, or oily?

1. They should be reused

2. They should be cleaned and used

3. They should not be used for installations

4. They can be used if no other options are available

The correct answer is: They should not be used for installations

Drill bits that are misshapen, broken, dirty, or oily pose significant risks when used for installations. Using compromised drill bits can lead to improper anchoring, which ultimately affects the structural integrity and safety of the installation. A misshapen or broken bit may not create the correct diameter or depth required for an adhesive anchor, and could also lead to difficulty in achieving accurate placement of the anchor. Dirty or oily bits can prevent proper adhesion since contaminants can interfere with the bonding process between the adhesive and the base material. Therefore, drill bits in such conditions should be completely replaced rather than used in installations to ensure the reliability and safety of the anchoring system. Proper maintenance and condition assessment of tools are essential practices to adhere to in order to meet safety standards and achieve the desired performance in adhesive anchor installations.