How to Make a Rope Bridge

There are certain skills that won’t benefit you right away in the P.A.W. Knowing how to build a rope bridge is definitely one of them. If you’re on your own and still wandering around looking for a safe location, this skill will be of almost no use to you. However, if you’re traveling in a group with more gear than everyone can carry on their backs or you’ve made a permanent settlement and you cross that particular stream/chasm frequently, knowing how to build a rope bridge and cross it is an invaluable skill.

There are more types of rope bridges than you can shake a stick at, so I’m going to go over some of the most basic varieties: the one-rope, two-rope, three-rope, and simple suspension bridges. All of them rely on several fundamental basics.

Anchor all ropes on both sides of the bridge to a solid, permanent anchor point, like a large rock embedded in the ground or an old tree (big trunk). In the military, they call these “bombproof” anchor points, as in if you were being shelled, your anchor points wouldn’t give way and leave you high and dry.
You need a suitable loading platform on both sides of the bridge. The loading platform is where you get on or off of the bridge. With the more permanent bridge types, this is less of a concern because you can always build a suitable platform. The platform needs to be relatively flat and close enough to the anchor rope that it isn’t difficult for anyone to attach themselves or any equipment to it.
When constructing the bridge, make sure there is some space between your rope and the anchor point. Once your bridge is complete, the ropes will all be incredibly taut but they’ll still move around a little bit once the bridge is in use. If you don’t leave a gap, this can cause the rope to rub against the anchor abrasing the rope, weakening it, and risk the rope snapping.
When tightening the ropes, be careful to not overtighten them. This will put undue stress on the rope at the knots which could cause the rope, knots, or both to fail while using the bridge.
Never let more than two people cross any of the bridges at a time, especially if they are carrying equipment with them. The more weight placed on the system, the more likely it will fail.

Transport Tightening System

The anchor mechanism on the near side is referred to as the “transport tightening system” because it is tied in such a way that all the slack can be taken out of the rope, thus tightening the whole system. It is a rope and series of knots tied around the anchor point in such a way as to secure the bridge and tighten the ropes to the desired tautness.

The first knot you will tie is a static knot (like a wireman’s knot or a figure-eight slip knot) around three to six feet from the anchor point. Clip a carabiner through the knot with the gate facing upward. Continue wrapping the rope around the anchor. At this point you need to decide whether you’re going to do a “dry crossing” or a “wet crossing”. A dry crossing is when everyone but the first person cross over the bridge. A wet crossing is when the last person is required to dismantle the bridge prior to crossing.

If you decide to perform a dry crossing, you will need to add a transport knot into the system. I personally prefer this method because you only have to have one strong swimmer/climber to initially take the far side rope end to the far side.

Transport Knot

Now that you’ve brought the rope around the tree, go back to the part of the rope on the other side of the tree and make a loop with the piece of rope coming from the far side crossing over the piece that goes around the tree. Now go back to the part that you just looped around the tree. Make a bight in the rope and pass it through the back of the loop you just made and clasp it into the caribiner on your static knot further down the rope.

Tightening and Anchoring the Rope

If you didn’t tie the transport knot into the system, clasp the rope into the carabiner attached to the static knot. Now you need to tighten the bridge. Pull the loose end of the rope coming out of the carabiner until the bridge is the appropriate taughtness. Tie the rope off on the anchor point. You can tie the rope off with any number of knots, but the easiest on to use is a round-turn with two half-hitches.

Collapsing the Bridge

For a dry crossing,after everybody but the last two people have crossed, untie your rope anchor knot and tie it to the second-to-last crosser and have him cross. As long as the slack end is directed toward the far end from the loop in the rope, the tension will be maintained. If you want to be doubly safe, you can twist the rope at the carabiner to bind all the rope. Once that person has crossed, pull the loop from the transport knot out of the carabiner and let the transport knot collapse. At this point, you basically have a rope tied on the far end anchor point, that crosses to the near end, loops around the near anchor point and back across to the far end. Have several people on the far end pull the rope tight and anchor the rope to the far end anchor point as described above. After you cross, untie the rope at both end and pull on the end until all of the rope is on your side.

One-Rope (Commando) Bridge

The one-rope, or commando, bridge is the simplest to build and tear down, but the most difficult and physically demanding to cross. As the name hints, you only use one rope to traverse your obstacle, meaning you’ll be in an awkward position, using pure muscle strength to drag yourself along the length of the bridge. This is ideal if you’re only crossing with minimal gear and able-bodied individuals, and in a hurry. Also, this is probably what your going to need initially when building a permanent bridge in order to move things back and forth during construction.

Crossing the Bridge

Crossing a bridge made with one rope can be tricky.

Two-Rope (Postmans) Bridge

The ever fancy Postman’s Bridge adds a whole additional rope to the Commando Bridge… Fancy! In this configuration, you walk on one rope and hold onto the second rope at chest level or slightly above.

If you have a lot of equipment or people incapable of crossing a Commando Bridge, but you still need your bridge to be temporary and/or hastily constructed and dismantled, then the Postman’s Bridge is your best bet. It is a reasonable balance of stability and expediency. When constructing this bridge, you are basically just building 2 Commando Bridges at different heights.

Three-Rope (Monkey) Bridge

The Monkey Bridge requires a bit more preparation, and because of the required resources and investment of time in this bridge, it is likely that you will use this in a semi-permanent capacity. One benefit that this bridge has over the previously discussed is that it can be used to span further distances.

Fortunately, the construction process is not overly complicated. Lay your hand and foot ropes out and tie stringers onto them so that the strings wrap each rope at approximately three foot intervals.

Build the shears by laying out two equal-length pieces of wood and tying them 2/3 of the way up. Spread them apart at the feet and lash them to a cross brace.

Lay the foot rope in the crux of the lasher, tie it to the anchor on one end and then tighten and tie at the other end. Do the same with the hand ropes, looping them over the tops of the shears first.

August 22, 2011

How to Tie a Figure Eight Slip Knot

The Figure Eight Slip Knot is an adjustable loop-on-the-bight knot.

Make a bight in the rope.
Hold the center of the bight in the right hand. With the center of the bight in the right hand and the legs of the rope secured, twist two complete turns clockwise.
Reach through the bight and grasp the long, standing end of the rope. Pull another bight back through the original bight.
Pull down on the short working end of the rope and dress the knot down.
If the knot is to be used in a transport tightening system, take the working end of the rope and form a half hitch around the loop of the figure eight knot.

August 22, 2011

How to Tie a Wireman’s Knot

There are many knots that fall into the loop-on-the-bight category, but this one is particularly helpful when building a rope bridge (as described in an upcoming post). This knot is basically tied by reverse french braiding the loops.

Wrap two turns around the left hand (palm up) from left to right.
Name the wraps from the palm to the fingertips: #1 (heel), #2 (palm), and #3 (fingertip). Grab the #2 wrap (middle) and place it over the #1 wrap (heel).
Grab the #1 wrap (now in the middle) and place it over the #3 wrap (fingertip).
Grab the #3 wrap (now in the middle) and place it over the #2 wrap (heel).
Grab the #2 wrap (now in the middle) and pull up to form a fixed loop.
Dress the knot down by pulling on the fixed loop and the two working ends. Pull the working ends apart to finish the knot.

August 22, 2011

How to Tie a Round Turn and Two Half Hitches

Knots are pretty important in survival. Most people don’t realize it until they suddenly have to tie a rope and the knot collapses and they have no idea why. One of the best knots for tying the end of a rope to a static object is called the Round Turn and Two Half Hitches. Called this because of the components that go into tying it. You turn the rope ’round the object and secure it with two half hitch knots.

First, wrap the rope around your static object.
Then loop the running end of the rope over the standing end.
Tuck the running end of the rope through the loop created by the last step. Pull to tighten the knot and push it back close to the anchor object.
Wrap the running end of the rope over the top of the standing end again.
Tuck the running end of the rope through the loop create by the last step (again). Pull to tighten the knot and push it back close to the first half hitch.

This will create a stable knot that can take a fair amount of weight without weakening.

August 7, 2011

Survival Hall of Fame: Hiroo Onoda

Hiroo Onoda Relieved of Duty — Hiroo Onoda being relieved of duty.

Some individuals have shown themselves to be exemplary students of survival, surviving adverse circumstances to such an extreme that they will be remembered for a long time. One of these individuals is Hiroo Onoda.

Hiroo Onoda was a 2nd Lieutenant in the Japanese Imperial Army stationed on Lubang Island in the Philippines at the end of World War 2. His mission was to hamper enemy efforts to maintain a presence on the island and to not surrender under any circumstances. Shortly after arriving on the island, the Allied forces attacked, leaving Onoda and 3 others as the only survivors on the island. These four holdouts hid in the jungle stealing food when they could, scavenging when they couldn’t, and being a general nuisance (as instructed) to those they perceived to be Allied forces or sympathizers.

When the war ended, they still had no way of communicating with their chain of command and continued raiding and sabotaging the local infrastructure to aid the war effort. Leaflets were left for them by locals and dropped from airplanes to try to get them to surrender, but they decided that it was propaganda and not to be trusted. One by one, Onoda’s comrades were picked off and by 1972, Hiroo was the only one left. Think about that for a second. 29 years after being sent to the island (28 years after the Japanese surrendered), this guy is still hiding out in the jungle, not only surviving, but conducting raids and sabotage on the locals in the name of Japan. Police and the Philippine Army had been looking for them the whole time and never found them.

It took a college dropout in 1974 to finally find Onoda. Norio Suzuki had decided to travel the world looking for “Lieutenant Onoda, a panda, and the Abominable Snowman, in that order.” It was less Suzuki finding Onoda and more Onoda finding Suzuki, but they talked a great deal. Suzuki told Onoda that the war had been over for many years, but Onoda didn’t believe him. Suzuki offered him a cigarette, a Japanese novel, and some pornography, of which Onoda only took the cigarette. Onoda confided that he had been given his orders by his superior, Major Taniguchi, and that he would only believe the war was really over if Major Taniguchi were the one to tell him. Suzuki returned to Japan telling Onoda he would return in two weeks. Suzuki and Taniguchi returned as promised to find Lieutenant Onoda in his full uniform, carrying a fully functional standard issue rifle with 500 rounds of ammunition, a several hand grenades, and his officers sword.

Taniguchi presented orders to Onoda stating:

In accordance with the Imperial command, the Fourteenth Area Army has ceased all combat activity.
In accordance with military Headquarters Command No. A-2003, the Special Squadron of Staff’s Headquarters is relieved of all military duties.
Units and individuals under the command of Special Squadron are to cease military activities and operations immediately and place themselves under the command of the nearest superior officer. When no officer can be found, they are to communicate with the American or Philippine forces and follow their directives.

This left Onoda relieved of duty (meaning he never actually surrendered). The Filipino government pardoned Onoda of all his crimes during his time on Lubang Island. Onoda went back to Japan, wrote an autobiography, and eventually moved to Brazil because he was weary of the “withering virtues” of Japan. He eventually went back to Lubang Island where he donated $10,000 to the local school.

Hiroo Onoda is the bad ass of bad asses. Taking on the population of an entire island, burning food supplies, blowing up transport ships, and evading capture for roughly 30 years. We should all be so well equipped in the same situation.

August 3, 2011

Found on the Internet: How to Throw a Tomahawk

Like the article says, it may not necesarily be a very useful skill, but there will be that one time that it could be the difference between life and death and looking back on it you’ll be glad you learned it.

You’ve probably seen it in countless movies. A mountain man or Indian takes a man down by hurling a tomahawk through the air and sticking it into his enemy’s back. If you’re going to strike a man down, I can’t think of a more badass way to do it than with a tomahawk.

But contrary to popular belief, Native Americans and mountain men rarely threw their tomahawks, or ‘hawks, during battle. A tomahawk was one of their best hand-to-hand weapons, good for both offensive and defensive moves. Throwing a tomahawk to kill an enemy, while certainly very cool looking, put considerable distance between the thrower and his very best weapon. Even if a mountain man or Indian warrior killed his target, he was pretty much defenseless while he scurried to retrieve his hawk from his victim’s body.

[How to Throw a Tomahawk Like a Mountain Man] via [The Art of Manliness]