Are There Certifications for Natural Cordage Strength Testing?

Natural Cordage Testing Methods

To test the strength of natural cordage, you can use various methods, including the reverse wrap test, where a load of 25-30 pounds (11-14 kg) is applied to a 1-inch (2.5 cm) diameter stick wrapped with cordage, and the cordage is pulled until it fails. Another method is the knot test, where a series of knots are tied in a piece of cordage, and the cordage is pulled until it fails. The cordage that holds the most loads or has the highest breaking strength is considered the strongest.

Standardized Testing Protocols

The International Organization for Standardization (ISO) has established standardized testing protocols for cordage strength, including the ISO 9001:2015 standard, which includes requirements for natural fiber cordage testing. The test involves wrapping a 1-inch (2.5 cm) diameter stick with the cordage and applying a load of 25-30 pounds (11-14 kg) until the cordage fails. The breaking strength of the cordage is then measured in pounds (Newtons).

Certification Programs and Training

Several certification programs, including the Certified Survival Instructor (CSI) program and the Wilderness First Responder (WFR) certification, include training on natural cordage strength testing and certification. These programs typically require students to pass a written exam and a practical test, which includes testing the strength of natural cordage using standardized protocols.