Rope rescue system kit 2 545 everything but the rope to fully outfit the rope rescue system kit for a complete systems package this kit includes the gear to rig a main line lowering or raising system mechanical advantage and a separate belay system.
Rope rescue lowering systems.
The resulting two rope system clearly passes both the critical point test and the whistle test the rescuer lowering the load uses a descent control device.
Rope can be used to construct raising and lowering systems highline systems mechanical advantage travel restrict systems and much much more.
4 locking carabiners 2 prussiks minding pulleys brake bar radium.
In this illustration a 100 kilogram load is being lowered through a pulley with 10 friction.
3 1 system the 3 1 is the classic mechanical advantage system used by rescuers.
The formula to calculate friction when lowering a load is.
Using the above formula and substituting 100 kilograms for the weight and 0 1 i e 10 for the friction loss shows that the hand must hold 90 kilograms.
Through the use of various knots auxiliary equipment and an open mind much can be accomplished with a rescue rope.
It requires less rope than a non piggybacked 2 1 system is reasonably easy to rig is easy to add a progress capture device provides an appropriate amount of mechanical advantage to raise one or two people and with a few tweaks it can be converted into a simple 5 1 system.
Rescue rope is a very important tool and is without a doubt very versatile.
How to construct a raising and lowering system with a 3 to 1 mechanical advantage hardware.