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Glossary of Slackline terms

  • Classification

    These values describe what applications this webbing is best used for. Hover each of the values to get a definition of what that application is.

  • Dynamic Elongation

    The amount of elongation experienced when dropping an 80kg object a distance of 4.8 meters on a 2.5 meter long section of rope. This is done in accordance to the Dynamic Elongation standard established by the UIAA.

  • Elongation @ 10 kN

    The amount of stretch this item has at a force of 10 kN (2,248 lbf).

  • Elongation @ WLL

    The amount of stretch this item has at its working load limit.

  • Gear Tie-Offs

    A small piece of cord or rope that is used to secure other small pieces of gear from falling. Usefull in highline rigging when you do not want to loose any small pieces.

  • Impact Force

    The amount of force, measured in kiloNewtons, that the first UIAA fall puts on the falling object of 80 kg.

  • Leader Lines

    A line or rope used to pull your highline webbing across the gap. Often times when bringing the line across the gap on a highline, there is a lot of potential for abrasion. Using a leader line to get the line across avoids destroying your slackline webbing.

  • Minimum Breaking Strength (MBS)

    The minimum amount of force required to break this object. Often referred to as tensile strength or breaking strength. Not to be confused with "Working Load Limit" or "Yield Strength".

  • Number of Falls

    This indicates how many UIAA falls the rope can hold before failing. The lab falls create much greater force than a real climbing fall; therefore it is mostly a comparative value.

  • Pullout Strength

    Corresponds to the amount of force required to pull the pin out without pressing the button to release the locking balls.

  • Reeve

    To thread rope through the sheaves of your pulleys. The end result is a pulley system.

  • Sheath Mass

    The percentage of the total weight that the sheath makes up. If a rope weighs 100 grams per meter and the sheath mass is 40%, that means the sheath weighs 40 grams per meter and the rest of the rope weighs 60 grams per meter.

  • Sheath Slippage

    The amount he sheath of a rope will slip when loaded radially around the diameter.

  • Sheave

    A sheave is a wheel or roller with a groove along its edge for holding a belt, rope, or cable. When hung between two supports and equipped with a belt, rope or cable, one or more sheaves make up a pulley. The words sheave and pulley are sometimes used interchangeably.

  • Static Elongation

    The amount of elongation the rope experiences when an 80 kg weight is hung from a 1 meter section of rope. This is done in accordance to the Static Elongation standard established by the UIAA.

  • Strength in Webbing Anchor

    The minimum amount of force this item will hold in any standard webbing anchor.

  • Webbing Thickness

    The average thickness of a piece of webbing.

  • Webbing Weight

    The amount of mass per unit length of this item.

  • Webbing Width

    The distance from one edge of the webbing to the other.

  • Working Load Limit (WLL)

    The highest amount of force that should be applied to this item under normal use. Any time this number is exceeding, this item should be retired from use. Working Load Limit is based on a 5:1 safety factor. You must decide if that is sufficient in your situation or if you need to adjust the WLL. This listed value is the absolute maximum WLL, no matter the situation.

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Balance Community: Slackline Outfitters