by Tim Maskew | Sep 24, 2020
See Also
What is the 5 3 1 rule in Forex?Current regulations require a certain number of samples per distinct or “hom*ogeneous” material type.
The general rule of thumb is the 3, 5, 7 rule:
- Less then 1,000 SF of the suspect material (3 samples)
- Between 1,000 SF and 5,000 SF of the suspect material (5 samples)
- Greater than 5,000 SF of the suspect material (7 samples)
So if there is <1,000 SF of Popcorn Ceiling then only 3 samples would be needed, and so on.
