Portable Single Point Anchors

Design Considerations

The use of weighted base single-point anchors will subject your roof to a 700 lb load in a concentrated area. For this reason, it is imperative to ensure that the structural integrity of the roof is sound. Weighted base single-point anchors are not recommended for pitches above 5 degrees. Portable single-point anchors for construction applications are mechanically attached, requiring no drilling of concrete or structural steel. Non-engineered single-point anchors must be rated at 5,000 lbs for one user or 10,000 lbs for two users. Engineered systems must be designed for 2 times the applied load in the event of a fall by a qualified person.

A single-point anchor may be designed for single or dual tie-off, as long as each user attaches to a designated D-Ring. Multiple users should never tie off to the same D-Ring under any circumstances. Special care must be taken to train personnel in the proper use of single-point anchors. An SPA is designed to protect workers within a 30 degree conical cone; moving outside the intended coverage area increases the likelihood of coming into contact with the structure below the work area in the event of a swing fall.