Construction Skills Certification Scheme (CSCS) Practice Test

Which of the following is a common method for controlling dust exposure on construction sites?

1. Using high-pressure water spray

2. Allowing dust to settle naturally

3. Wearing regular masks

4. Opening all windows on site

The correct answer is: Using high-pressure water spray

Using high-pressure water spray is an effective method for controlling dust exposure on construction sites. This technique involves misting water into the air or applying a fine spray directly to surfaces where dust is likely to be generated. The water content binds to the dust particles, making them heavier and causing them to settle down rather than remain airborne. This approach helps to minimize airborne dust, which can pose health risks to workers and hinder visibility on the site. The other methods present limitations in effectively managing dust. Allowing dust to settle naturally can leave workers exposed to harmful particles for extended periods, which is not a proactive approach to dust control. Wearing regular masks, while helpful in providing some level of personal protection, does not address the root cause of dust generation on a site and can become ineffective if not of the appropriate standard or used improperly. Opening all windows may allow for better airflow but can also introduce more dust from the outside and does not actively reduce dust levels on the site. Thus, the use of high-pressure water spray stands out as the most reliable and immediate measure for controlling dust exposure.