Underground CSST marker distance from grade?

Underground CSST marker distance from grade?

• A. Six inches from grade
• B. One foot from grade
• C. Ten inches from grade
• D. One inch from grade

Answer: (A)

Marking buried gas piping so it’s visible at or near the surface is essential for safety. For underground CSST, the marker should be placed six inches above grade. This height keeps the marker above soil and landscaping, ensuring it remains visible to anyone digging or performing work, while still being close enough to indicate the exact buried line. If the marker were much closer to the soil surface, it could be buried and go unnoticed; if it were much higher, it could be damaged or look out of place. Six inches above grade is the standard, practical distance that aligns with identifying buried gas lines.

Marking buried gas piping so it’s visible at or near the surface is essential for safety. For underground CSST, the marker should be placed six inches above grade. This height keeps the marker above soil and landscaping, ensuring it remains visible to anyone digging or performing work, while still being close enough to indicate the exact buried line. If the marker were much closer to the soil surface, it could be buried and go unnoticed; if it were much higher, it could be damaged or look out of place. Six inches above grade is the standard, practical distance that aligns with identifying buried gas lines.