The greater the angle of the re-direct, the less the force exerted on it.Factors for the angle formed by the legs of the anchor in a two point anchor system 30 degrees = 0.52 60 degrees = 0.58 90 degrees = 0.71 120 degrees = 1 150 degrees = 1.94 180 degrees = 12.For safety, 90 degrees is the maximum preferred angle, 120 degrees should NEVER be exceeded.Any angle in an anchor system will increase the loading on anchors and other element of the system.Multiple points Load sharing Load distributing.Lash from the top of the front picket to the bottom of the next one working backwards.Always have a second/separate anchor point for the backup line.Used to secure rope to an anchor point or object being moved.Formed from nylon webbing w/ sewn in loops.Ends connect using a double fisherman knot.Formed using 6 to 9mm kern mantle rope.Used for mechanical advantage systems or change of directions.Used to connect rope/webbing to objects.Note: Only full body harnesses should be used when there is any likelihood that the rescuer will be turned upside down.NFPA Class II/ANSI Class IV – seat-style for rescue.NFPA/ANSI Class I – seat style for emergency escape.Used as a Rescue Knot or to hoist toolsīasic Rescue knots Grog's Search & Rescue Knots.Rope can be washed by hand with a commercial rope washer or in a laundry machine. sun, heat, exhaust, acid, hot concrete.Store IAW manufacturer’s recommendations and to avoid degradation from the environment.Rope should be retired based on experience and good judgment, used in conjunction with education.New ropes inspected and a rope log created.Note: Life Safety Rope must have an internal tracer tape indicating compliance.Class 2 (General use) – Two person life safety rope w/ > 600 lbs working strength.Class 1 (Light use) – One person life safety rope w/ > 300 lbs working strength.NFPA 1006, Standard for Rescue Technician Professional Qualifications, 2001 ed.NFPA 1670, Standard on Operations and Training for Technical Rescue Incidents, 1999 ed.Fire Service Rescue, Sixth Edition, IFSTA.Rescue Technician Instructor Guide, Department of Defense Fire Academy.NFPA 1983, Standard on Fire Service Life Safety Rope and System Components, 2001 Edition.Constructing mechanical advantage systems.
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