Web Devices Fall Arrest Systems LA 80-AP Series Anchor Pad/I-Beam Crossover Straps is designed for anchoring (tying off) a lanyard, self retracting lifeline (SRL), and/or vertical lifeline (VLL), and other components of a personal fall arrest system (PFAS), to a structural member capable of supporting 5000lbs. Anchor Pads/I-Beam Crossover Straps are part of a complete personal fall arrest system and are intended for use by one (1) person only.