Deadman Anchors, Part 2

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Originally published August 22, 2024

Dead man anchors are part science, part art—and getting the webbing attachment wrong can turn a solid anchor into a death trap. Here's how to tie off buried objects so they actually hold.

Summary:

Part 2 of the dead man anchor series focuses on proper webbing techniques and object selection, featuring insights from swift water expert Joe Storms on adapting to field conditions.

Excavation Tools (in order of preference):

  1. Proper shovel: Sturdy material that can withstand abuse

  2. Trowel: Compact option if you know you'll need to dig

  3. Rock: Shovel-shaped rock works in a pinch when no tools available

Webbing Attachment Technique:

Step 1: Tie overhand knot on a bight at end of webbing

Step 2: Wrap webbing around object and pull opposite end completely through the loop

  • Creates 2:1 mechanical advantage for cinching tight

  • Allows maximum tension on the wrap

Step 3: Secure based on object shape

  • Simple shapes: Single girth hitch may be sufficient

  • Complex shapes: Add half hitch, change wrap direction, add multiple wraps

  • Goal: Webbing cannot slide off under any circumstances

Step 4: Shake test

  • Aggressively test the wrap before burying

  • Webbing must stay locked in position

Critical Principle: "There is not one right way to do this. The process is a mix of science and art."

Beyond Rocks—Alternative Objects:

Logs: Excellent dead man material with good surface area

Bundles of sticks: Viable if used correctly

  • Key concern: Leverage can cause breakage

  • Solution: Place solid material (rocks) on both sides close to webbing to minimize leverage

  • Reduces bending moment on individual sticks

Adding Solid Material: Two creative methods shown for placing rocks to reinforce front of dead man and prevent leverage-induced failure. This applies to ALL dead man objects—even rocks can break under extreme loads.

Real-World Breaking Test: Photo example: Dead man didn't fail with 1, 2, or even 3 people pulling—only broke when entire crew applied force simultaneously. Demonstrates proper construction provides significant strength, but highlights importance of load management.

Encountering Existing Dead Man Anchors:

What you'll see: Just webbing emerging from ground

What you should do:

  1. Dig it up and inspect (safest approach)

  2. Check burial depth—water flow may have eroded surface material

  3. Verify object integrity and webbing attachment

  4. Reconstruct if solid, or rebuild if compromised

Field Adaptation Example: Shallow rocky soil (only 2" depth achieved) required hybrid approach: combined minimal burial with heavy rock stacking on top—creating dead man/cairn anchor hybrid.

Series Context: Part 2 of 3-part series; see "Friendly Friction and Meat" video for techniques to make dead man anchors bomber through backup and testing protocols.

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