Rigid Post Single Point Anchors

Design Considerations

Because Rigid Post Single Point Anchors used in rooftop applications are commonly attached structural steel members beneath the roof deck, their installation is a more complex undertaking than other rooftop anchors. Non-engineered single point anchors must be rated rated at 5,000 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 structure below the work area in the event of a swing fall.