When attaching shocktube to detonation cord, which knot is recommended?

When attaching shocktube to detonation cord, which knot is recommended?

• A. Square knot and clove hitch
• B. Bowline
• C. Reef knot
• D. Butt splice

Answer: (A)

The idea being tested is that the connection between shock tube and detonating cord must be secure, simple to inspect, and resistant to movement during handling. A square knot to join the shock tube end to the detonating cord, with a clove hitch wrapped around the assembly to hold it in place, provides that combination of a strong, flat, easily verifiable join and a secure grip along the cord. The square knot keeps the two parts tied together in a neat, compact way and is straightforward to check visually, while the clove hitch serves as an anchor that prevents slipping as the cord is moved or subjected to handling. This setup reduces the risk of a loose or detached connection, which is critical for reliable initiation. Other options don’t offer the same practical balance: a bowline forms a loop that isn’t ideal for joining two conductors; a reef knot is similar to a square knot but is less reliable under certain loads; and a butt splice is not the knot used for linking shock tube to detonating cord.

The idea being tested is that the connection between shock tube and detonating cord must be secure, simple to inspect, and resistant to movement during handling. A square knot to join the shock tube end to the detonating cord, with a clove hitch wrapped around the assembly to hold it in place, provides that combination of a strong, flat, easily verifiable join and a secure grip along the cord. The square knot keeps the two parts tied together in a neat, compact way and is straightforward to check visually, while the clove hitch serves as an anchor that prevents slipping as the cord is moved or subjected to handling. This setup reduces the risk of a loose or detached connection, which is critical for reliable initiation. Other options don’t offer the same practical balance: a bowline forms a loop that isn’t ideal for joining two conductors; a reef knot is similar to a square knot but is less reliable under certain loads; and a butt splice is not the knot used for linking shock tube to detonating cord.