Hub stakes are protected by which types of stakes?

• A. Witness stakes or guard stakes
• B. Boundary stakes or control points
• C. Grade stakes or slope stakes
• D. Bench marks or corner stakes

Answer: (A)

Hub stakes need protection because they mark precise survey positions that can be easily disturbed by digging, driving, or construction activity. To keep the hub from being moved or lost, two practical aids are used: witness stakes and guard stakes. Witness stakes nearby indicate the hub’s location and provide a reference point so crews can recover the mark later, even if the ground has changed. Guard stakes are placed around the hub to physically protect it and deter disturbance, often giving a visual cue that the area is important.

Other stake types serve different purposes. Boundary stakes or control points establish property lines and reference geometry rather than protecting a specific hub; grade stakes or slope stakes set elevation and slope for earthwork; bench marks or corner stakes mark vertical references or parcel corners. They aren’t primarily intended to shield the hub itself.