Water pipes must be protected from freezing, which is generally accomplished by burying the pipes at least _______ ft below the frost line.

Water pipes must be protected from freezing, which is generally accomplished by burying the pipes at least _______ ft below the frost line.

• A. 1
• B. 2
• C. 3
• D. 0

Answer: (A)

Burying water pipes below the frost line protects them from freezing by placing them in soil that doesn’t freeze in winter. The frost line is the depth to which ground freezes; below it, the soil stays unfrozen, keeping the pipes from freezing. A common rule of thumb is to place the piping at least one foot below that frost line, which is why one foot is cited as the general minimum. In colder climates, deeper burying may be required, but the standard practice for general protection is 1 ft below the frost line. The other depths aren’t the typical minimum: zero feet offers no protection, while deeper depths are not the standard book-rule in most jurisdictions.

Burying water pipes below the frost line protects them from freezing by placing them in soil that doesn’t freeze in winter. The frost line is the depth to which ground freezes; below it, the soil stays unfrozen, keeping the pipes from freezing. A common rule of thumb is to place the piping at least one foot below that frost line, which is why one foot is cited as the general minimum. In colder climates, deeper burying may be required, but the standard practice for general protection is 1 ft below the frost line. The other depths aren’t the typical minimum: zero feet offers no protection, while deeper depths are not the standard book-rule in most jurisdictions.