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vRigger Learning Center

This also applies to cable, chain, and webbing.

Gear that is anchored includes anchors, rocks, trees, tripods, trucks, etc.

A "bight" is a simple loop in a rope that does not cross itself.

A "bend" is a knot that joins two ropes together. Bends can only be attached to the end of a rope.

A "hitch" is a type of knot that must be tied around another object.

"Descending devices" (e.g., ATCs, Brake Bar Racks, Figure 8s, Rescue 8s, etc) create friction as their primary purpose. The friction in descending devices is always considered when calculating forces.

The "Safety Factor" is the ratio between the gear's breaking strength and the maximum load applied to the gear (e.g., 5:1).

Working with Flaked Ropes in vRigger

General Tips

vRigger includes flaked (aka "stacked") ropes. As shown here, they look best when you use rope benders to curve the rope where it enters and exists the pile of rope.

If the rope comes out the bottom of the flaked rope, you can use the reverse rope routing property to swap the rope's entry and exit points. You might also add a stopper knot as shown above.

Stacked Ropes and Force Calculations

Unfortunately, vRigger will move the flaked rope (and stopper knot) when you calculate forces which creates an unsightly appearance.

You can prevent the flaked rope from moving when you calculate forces by locking it. We locked the flaked rope, stopper knot, and rope tail in the following illustration (in the red circles) so these items won't move when the forces are calculated.