What is a requirement for placing pressure taps during testing?

The requirement to place pressure taps where they won't be stepped on is essential for several reasons. First, ensuring that pressure taps are not located in areas where they could be accidentally stepped on prevents physical damage to the equipment. Damaged taps can lead to inaccurate pressure measurements, which is critical for the integrity of the whole-building airtightness test.

Moreover, placing pressure taps in safe locations minimizes the risk of obstruction during the testing process, allowing for consistent airflow and ensuring the taps maintain their intended position. This placement is crucial for capturing accurate pressure readings, leading to reliable test results that can inform necessary building performance improvements.

In contrast, other options may present challenges or complications. For instance, placing pressure taps in direct sunlight could affect their readings due to temperature fluctuations. Similarly, positioning them on the ceiling or near air vents can introduce inaccuracies in measurements due to unintended airflow or pressure variations that those locations might experience.