How many samples for 4 LF TSI?

How many samples for 4 LF TSI?

• A. 3
• B. 2
• C. 4
• D. 5

Answer: (A)

When you’re sampling a run of piping for this test, you place sampling points to cover the length evenly so a problem anywhere along the length can be detected. For a four-foot (4 LF) segment, taking samples at the start, the middle, and the end gives three well-spaced locations: 0 feet, 2 feet, and 4 feet. This pattern provides representation across the entire run without overdoing the sampling. If you used only two samples, you could miss issues in between; more than three isn’t necessary for such a short length.

When you’re sampling a run of piping for this test, you place sampling points to cover the length evenly so a problem anywhere along the length can be detected. For a four-foot (4 LF) segment, taking samples at the start, the middle, and the end gives three well-spaced locations: 0 feet, 2 feet, and 4 feet. This pattern provides representation across the entire run without overdoing the sampling. If you used only two samples, you could miss issues in between; more than three isn’t necessary for such a short length.