Can you help with climbing ropes?

Climbing ropes question?

• can you use 9mm general purpose rope for climbing? its only temporary as i let my friends borrow my real climbing rope and i have yet to get it back. its outdoor climbing.

• Answer:

  General purpose ropes should never be used for climbing for a number of reasons. 1. Climbing ropes are designed to be "dynamic" meaning that they will stretch to absorb a significant portion of the energy imparted during a fall. A general-purpose rope is likely very static meaning that this force will be imparted on the climber and his or her protection during a fall resulting in injury or protection failure. This is bad. 2. Climbing ropes have been tested to meet CEN/UIAA standards for strength, elongation and other safety-related aspects. General purpose ropes have not been tested nor have they been designed to meet these standards. 3. Climbing ropes use a kernmantle construction where an inner core provides the majority of the rope's strength while an outer sheath protects the core. General purpose ropes are generally twisted (or sometimes braided) and don't usually offer the same degree of strength, energy absorption and abrasion resistance. Climbing on a rope not specifically designed for it is a very bad idea. Don't do it.