What is the square knot used for?

• A. Used to bind two ropes of the same diameter together, not load bearing, must use the same diameter ropes
• B. To tie two ropes for load bearing purposes
• C. To join two pieces of webbing
• D. Hauling, ascending, and self-rescue

Answer: (A)

The square knot is used to join two ropes of the same diameter for light, non-load-bearing tasks. It’s quick and easy to untie when the tension is light, but it isn’t reliable under load, so it shouldn’t be used where a strong, safe hold is required. When you need to join ropes of different diameters, a sheet bend is more appropriate, and for load-bearing or critical uses you would choose a different knot altogether.

This knot isn’t intended for binding webbing, hauling, ascending, or self-rescue situations, so those options aren’t fitting uses.