How to tie it
- 1Start with a clove hitch on the vertical pole, just below where the two poles cross, and twist the short tail around the standing part to get it out of the way.
- 2Make three or more wrapping turns around both poles — over one pole and under the other in a consistent square path. Keep each turn snug and lay it neatly beside the last, not on top.
- 3Make frapping turns — two or three turns passed between the poles, around the wraps, pulled as tight as you can to cinch the wraps together.
- 4Finish with a clove hitch (often on the pole you didn't start on), and tuck or half-hitch the end.
Remember it as
Wraps bind the poles; fraps squeeze the wraps.
When to use it
- Pioneering structures. Trestles, towers, monkey bridges, gateways, flag poles — wherever two spars cross and press against each other.
- Camp gadgets. Tables, wash stands, tool racks, drying racks.
- Fences, barriers, and raft frames from driven stakes and cross-poles.
Common mistakes & safety
- Tight fraps are the whole game. A loose lashing lets the poles shift and the structure rack and fail. Use body weight and leg strength to tension, not just hand pull.
- A lashed structure is load-bearing and can hurt people if it fails. Inspect poles for cracks and rot, match rope and pole size to the load, and don't let anyone climb a structure until it's checked.
- The clove hitches must be secure. If the start or finish slips, the wraps unravel — dress and lock them.
- Right joint for the job. A square lashing is for poles that cross and press together; poles that pull apart along their length need a diagonal lashing instead.
- Rope condition matters. Worn, rotten, or wrong-diameter rope is a failure waiting to happen on a load-bearing joint.
Going deeper
- Wraps vs. fraps. Wrapping turns go around both poles to bind them; frapping turns go around the wraps, between the poles, to squeeze them tight. Every lashing is some pattern of these two, plus start and finish hitches.
- Method variants. There's a traditional start and a modern "Mark II" start; both reach the same rigid cross-joint. Follow whichever version your troop teaches.
- Square vs. diagonal. Square lashing for poles that cross and bear against each other; diagonal lashing for poles that need to be pulled together because they'd otherwise spring apart.
Official source
Square Lashing on Animated Knots →Pioneering methods and official wording live with Scouting America. Confirm the current technique and safety guidance at scouting.org before building anything people will climb or stand on.