One piece of information often lacking in discussion of the Petzl ASAP is just how much rope is needed below the device to be sure it catches during a fall.

You may use the calcuator below to calculate the force on a deviation anchor. You will need to input values for the deviation angle as depicted in the image, and

You may use the calculator below to calculate the force on each anchor in a highline set up. You will need to input values for the span, sag as depicted