How to Tie a Square Knot
Many people learn to tie a square knot early in their exploration of knots and rope work due to its simplicity and versatility. Here are the fast facts you need to know to properly tie and use a square knot. The standard of proficiency for tying a square knot is: In any environment, given a sling rope, while blindfolded (or in complete darkness), tie a square knot with overhand security knots in 30 seconds or less, ensuring that each pigtail is no shorter than a fist and no longer than a fist with thumb extended (4-6 inches).
Square Knot Use
The square knot is a Class 1 (End of the rope) knot that is used for joining two ropes OF EQUAL DIAMETER. [For ropes of unequal diameter, see SHEET BEND]
Square Knot Advantages vs. Disadvantages
Advantages
- Easy to tie
- Can be untied after being under heavy load
- It can be untied while loaded
Disadvantages
- Cannot be used to join ropes of unequal diameter
- It can easily untie itself if used without overhand security knots (or another security knot)
- Significantly reduces the strength of a rope system (about 45% of original strength)
Square Knot Animation
Adding Overhand Security Knots Animation
Tying a Square Knot Step-by-Step Breakdown
Step 1
Start with roughly 18 inches of pigtail in each hand.
Step 2
Cross the right rope over the left rope.
Step 3
Bring the right rope up through the middle.
Step 4
The rope initially on the right should now be on the left and vice versa.
Step 5
Cross the left rope over the right.
Step 6
Bring the left rope through the newly formed circle.
Step 7
Set and dress the square knot.
Step 8 (Optional)
To add overhand security knots, tie an overhand (which incorporates the rope adjacent to the knot’s shelf) with the remaining pigtail, as shown in steps 8-11. Security knots MUST BE USED IF THE KNOT IS PART OF A LIFE SAFETY SYSTEM!
Step 9 (Optional)
Step 10 (Optional)
Step 11 (Optional)
Other Class 1 (End of the Rope) Knots to Explore
- Sheet Bend
- Double Fisherman’s Knot
- Water/Tape Knot
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Owen Wood
Founder, Guardian Angel Tactical
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