Tug-O-Angle

Angles and vector forces are an intimate part of rigging and it’s easy to get lost in the numbers.  Heck, it can even get frustrating!  Use this simple exercise to cut out the math and get a feel for how vector forces and angles play into rigging.  The math, numbers, and vector charts can come after.

Tug-O-Angle draws on experiential learning and is a fun way to kick-off an anchor workshop as it puts a variety of concepts into perspective and provides participants with an opportunity to feel and experience forces directly.  This exercise requires a minimum of 3 people but the more the merrier.

SET-UP

There are multiple ways to set-up this exercise.  My preference is to have two separate lengths of rope.  Find the middle point of one of these lines and tie an eight on a bite — these are the legs for your anchor.  Tie an eight on a bite at the end of your other single line — this is your load line.  Attach your load line to your anchor line using a carabiner.  See below.

tug-o-angle_simplebw

Assign an equal amount of participants to each leg of rope.  This may not look fair but that’s the fun part.  Start with the legs of the anchor at a 45° angle with the load line positioned for a straight pull.  Make sure that each leg of rope and it’s assigned participants run straight in the intended direction.

The job of those on the anchor side (left in the image above) is to be a solid and strong anchor.  Direct them to hold fast and strong with legs shoulder width apart and one leg in front of the other — they must only hold and not pull!  Check in with your anchor teams and make sure they’re ready and “bomb proof” before moving onto the load team.

The job of those on load side (right in the image above) is to apply their load to the anchor.  Direct them to start with a static pull — if the anchor side holds strong direct them to apply some dynamic pulls or shock loads.

Observe what happens and debrief with participants on both the anchor and load side.  How did it feel?  What did they notice?

Repeat the exercise increasing the angle of the anchor side to 90° then 120° and finally 180°.  What do you observe each time?

tug-o-angle_exercise

Pull from the group and debrief the overall exercise.  What conclusions can be made?

Have fun with this exercise.  Add a change of direction, throw in some pulleys, change up your anchor, etc.  Find something cool?  Let us know what you discover.

Contributed by Basil Tsimoyianis

DIY Lanyards

Lanyards, sometimes referred to as cows tails or lobster claws, come in many forms.  Common uses include connecting to an anchor, assisting in vertical or horizontal progression, and/or holding position where needed.  You can buy adjustable and non-adjustable lanyards or make them yourself.  Those from manufacturers will often have sewn termination points instead of knots and adjustable versions will usually consist of mechanical rope grabs or buckles — they also cost considerably more than DIY options.

A climber uses lanyards as a means for progression while aid climbing during a training.

A climber uses three DIY lanyards while aid climbing.

PERKS TO THE DIY LANYARD

  • Materials are easy to acquire
  • Knots are much better at absorbing shock then sewn termination points and will reduce the impact on your body in a fall
  • Prusiks are lighter, cheaper, and easier to acquire than mechanical rope grabs
  • Customization!  Length, color, rope diameter, composition, etc.
  • Low budget
Climbers use DIY lanyards to hold themselves in position while rigging a tri-bi-mono-pod during an Earth First! Climbers Guild camp in Oregon.

Climbers use DIY lanyards for work positioning while rigging a tri-bi-mono-pod during an Earth First! Climbers Guild camp in Oregon.

THINGS TO CONSIDER WHEN MAKING A DIY LANYARD

Know your equipment.  Use equipment rated for climbing.  Don’t use rope or gear that you would not otherwise climb on.  Retired gear should not be made into a lanyard!  Know the history and condition of the equipment you’re using — if you have doubts then best not use it.  It’s good practice to label, track, and retire lanyards accordingly.

Dynamic or Static?  It depends.  Dynamic lanyards have the benefit of absorbing impact forces resulting from a fall.  Use them to connect to static systems, move across multiple points, or to protect against a fall.  Static lanyards (made from webbing or static rope) lack the elastic properties found in dynamic lines and do a better job at reducing unwanted movement or bounce.  Use them when you plan to work or move directly on loaded lanyards.  Examples of this would be progressing up a tree, sitting back on your lanyard for positioning, or restraining yourself from an edge.

icon_1636A fall on any static system can result in serious injury or death.  Use proper technique when climbing with static lanyards to avoid shock loading your system.  Use a shock absorber or prusik hitch as a link to your static lanyard to reduce the impact on your body in case of a fall.

How about the diameter?  10.5mm and 11mm diameter lines are the go to if you expect your lanyards to take a beating.  Wrapping your lanyard around trees or beams and/or running it over edges will reduce the life span and integrity of your lanyard.  Thicker lines are a good choice for training programs or extended actions where prolonged wear and tear is likely.  That said, 9.4mm to 10mm lanyards are lighter, less bulky, and easier to work with.  They’re plenty strong but are best reserved for experienced climbers and their condition should be carefully monitored.

Climbers with Greenpeace on the Arctic Sunrise in the Barents Sea. Photo: Igor Podgorny, July 2012

Climbers with Greenpeace on the Arctic Sunrise in the Barents Sea. Photo: Igor Podgorny, July 2012

Know your knots.  The figure eight follow thru, eight on a bite, and barrel knot/scaffold knot, are the three most useful knots for tying your own lanyards.  The figure eight follow thru is the knot of choice for tying a lanyard directly to the master point of your harness (the overhand follow thru is a low profile alternative but is much more difficult to untie once firmly loaded).  The figure eight on a bite is great for when you’re able to clip in directly or want carabiners to rotate freely.  The barrel knot is best in situations where you want to use minimal rope or capture a carabiner in a specific orientation — this helps restrict movement and prevent cross loading.

icon_6770Keep your knots low profile!  The gain (eye of your knot) should be kept short to prevent snagging and conserve rope length.  The tail of your knot should be about a palms width and no longer (it’ll just get in the way).  I often tape my tails so they don’t flap around once I have everything adjusted.

Lanyard lengths cut from dynamic climb line and labeled accordingly with length, diameter, and date of service.

Lanyard lengths cut from dynamic climb line and labeled accordingly with length, diameter, and date of manufacture.

Length.  This is highly dependent on your intended purpose.  Short lanyards are common practice in rope access or rock climbing where you’re often connecting lanyards to devices or anchor points within reach.  Longer lanyards are necessary for climbing trees that require you to wrap large diameter trunks or extend to limbs beyond your reach.  Regardless of what you choose it’s often useful to have at least one lanyard that’s an arms reach — this includes the knots and carabiners.  A 6 to 7 foot (~2m) length of rope is a good place to start.  If you want to tie two lanyards consider doing it with a longer single length of rope — about 12 to 14 feet (3.5-4.5m) or more depending on your needs.  This alternative will leave you with a third point of attachment between the two lanyards (see below).

icon_1635Lanyards extending beyond your reach require specific techniques and should be used with caution.  They are best restricted for use as a flip line, restraint line, or progression in trees.

Two lanyards tied from one 12ft length of dynamic line. The point isolated between the lanyards creates a loop that serves as another point of connection.

Two lanyards tied from one 12ft length of dynamic line. The bridge (bight of rope isolated between the lanyards) serves as another point of connection.

Adjustable lanyards.  There are multiple ways to do this but the simplest and most recognized method uses a prusik loop (6mm works well with lanyard diameters of 9 to 11mm).  Start with a short prusik loop and tie a prusik hitch around your lanyard.  Clip the prusik back to the master point on your harness (you can avoid using a carabiner by retying the prusik loop directly to your harness as seen in the image below).  You can also fasten a quick link/screw link beneath the prusik hitch on your lanyard and back to your harness as pictured — this will tend the prusik and allow you to shorten the lanyard with one hand (this technique was shared to me by a friend who had climbed with Robin Wood, a German environmental organization).

icon_6770Adding a prusik as a point of connection to your lanyard can help reduce impact forces resulting from a fall.   A prusik will slip slightly before locking up if subject to high loads or forces.  This absorbs energy and will reduce stress on your overall system and body.

Adjustable lanyard. Notice the four components: barrel knot restricts carabiner movement, prusik for adjustment, screw link tends prusik, eight follow-thru tied directly to central point on harness.

Adjustable lanyard — notice the four components: barrel knot restricts carabiner movement, prusik captures preferred lanyard length, screw link tends prusik for one handed adjustment, eight follow-thru tied directly to central point on harness.

The addition of a quick link allows for one handed operation when using prusiks.

The addition of a quick link allows for one handed operation when using a prusik to create an adjustable lanyard.

WHATEVER YOU USE JUST DON’T FORGET — A GOOD LANYARD WILL:

  • Be made of climb rated materials in good condition
  • Be connected to a load bearing point on your harness intended for the job
  • Hold you where you want to be
  • Catch a fall while minimizing impact
  • Be simple and easy to use
It’s important to note that there are many options and nuances for lanyards not covered here.  If you’re unsure of something ASK!
 Dynamic rope (sold by the foot!) — Visit our store for current pricing

Input or tips?  Please share. 

Stopper Knots

A stopper knot is any knot tied at the end of a rappel rope that prevents a climber from rappelling off the end of the rope.  Many accidents and fatalities are a result of insufficient stopper knots or none at all.

RULES OF THE STOPPER KNOT:

  • A stopper knot must be larger than the passage/clearance of the rappel device being used

  • A stopper knot is dependent on the diameter of line being used (thinner diameter lines require larger stopper knots)

  • Stopper knots must be placed on BOTH lines if rappelling off running lines

  • Always check the ends of your rope(s) for adequate stopper knots

In July of 2009 I had a stopper knot slip thru my hand while wrestling with a banner on Mount Rushmore near Keystone, South Dakota.  Things were hectic and I was exhausted and dehydrated.  It happened fast and before I knew it I was 300ft in the air and hanging out between good ol’ Teddy and Abe with a double overhand stopper knot jammed into my rappel device (I was using the Petzl STOP).

Moral of the story?  Tie a knot at the end of your rope!  But remember – NOT ALL STOPPER KNOTS ARE CREATED EQUAL!

NEVER use a single overhand knot as a stopper knot! They can slip thru rappel devices.

NEVER use a single overhand knot as a stopper knot! They can slip thru rappel devices.


Stopper knots come in all shapes and sizes.  Choosing which is best can prevent a lot of hassle and even save your life.  Use this list of six with the rules above to help you choose the best stopper knot for any given situation.


DOUBLE OVERHAND

double_overhand

Pros

  • Simple
  • Fast
  • Uses minimal rope

Cons

  • Slim profile (rope diameter and rappel device must be carefully considered!)

TRIPLE OVERHAND

triple_overhand

Pros

  • Simple variation to double overhand
  • Larger profile than double overhand

Cons

  • More likely to get jammed or stuck on edges or in cracks/crevices

QUADRUPLE OVERHAND

quadrupal_overhand

Pros

  • Variation to triple overhand
  • Larger profile than triple overhand

Cons

  • Requires more rope than the other overhand variations
  • More likely to get jammed or stuck on edges or in cracks/crevices
  • More cumbersome to tie than the other overhand variations

CAPUCHIN (double overhand on a bight)

capuchin

Pros

  • Simple
  • Wide profile (ball shape)
  • Good choice for thinner diameter ropes or rappel devices with greater clearance
  • Knot of choice for figure 8 descender or when descending with a mule hitch (carabiner dependent!)

Cons

  • Requires a fair amount of rope
  • More likely to get jammed or stuck on edges or in cracks/crevices
  • Open loop is a point for snagging

FIGURE EIGHT ON A BIGHT

figure-eight_onbight

Pros

  • Simple
  • Fast
  • Large profile
  • Good choice for thinner diameter ropes or rappel devices with greater clearance

Cons

  • Requires a fair amount of rope
  • More likely to get jammed or stuck on edges or in cracks/crevices
  • Open loop is a point for snagging

FIGURE EIGHT ON A BIGHT WITH ADDED CONNECTOR

figure-eight_onbite_connector

Pros

  • Fast and easy variation to the figure eight on a bight
  • Large profile

Cons

  • More likely to get jammed or stuck on edges or in cracks/crevices
  • Open loop and connector is a point for snagging
  • Requires more gear
  • Hard gear has the potential to damage surroundings or injure bystanders

Prusik hitch

PrusikHitch_color-txt

The prusik hitch is the friction hitch that every rope guerrilla should know.  It’s tied with a loop of accessory cord and serves as a “soft” rope grab, gripping when under tension but able to slide when the load is released.  It grabs in either direction and makes a great point of connection when working on a horizontal safety or restraint line.

Use the prusik hitch in a variety of applications; hauling, rescue, banner rigging, ascent/descent – the list goes on.  The prusik hitch (developed in 1931) remains a tried and true alternative to the mechanical rope grabs to which it gave origin.  It’s simplicity, many functions, low weight, and low cost make it irreplaceable.

One method for using a prusik hitch as an autoblock or backup to a rappel.

One method for using a prusik hitch as an autoblock or backup for a rappel.

Benefits:

  • Simple
  • Easy to tie
  • Multi-directional
  • Multi-purpose

Learn to tie the prusik hitch here.

Improvised prusik minding pulley

Pulley_improvisedprusikminding-cyIt’s common practice to use a method of progress capture to hold a load.

pulley_pm-magnify

Prusik minding pulleys are designed with extended side plates to prevent a prusik hitch from entering the sheave (wheel) of the pulley when capturing progress in a haul system.

You can also improvise a prusik minding pulley with a simple pulley and some hardware.  This configuration is best used for banner rigging and should be prepared in advance.

Pulley_improvised-prusikminding

Start by finding the correct size nut and washer.  You’ll want the opening of your nut and washer to be slightly larger than the diameter of the rope.

Thread the rope through the nut, washer, and pulley before finishing with a friction hitch on the load end of the line.  Clip this back to the same carabiner on the pulley.

Warning:  Do not use a nut and washer to capture progress with a live load.  The threads in the nut and imperfections in the washer can damage a rope.