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This is very much a work in progress. It includes influences from many different people and areas of study. The intent is to establish a "Technical Doctrine" for guiding technical rigging practices. It covers physics terms, units of measure, system loading, "Jolts", fall factors, Fundamental Requirements, and Risk based Decision Points. I hope to expand this work over time....

These are the basic building blocks of the technical systems a rescuer should know. 

In June of 2019 I conducted air quality testing in supplied air hoses on Rescue Companies in the Austin Fire Department. This report shows what we found. Bottom line, it is CRITICAL to Purge your SAR air hose before use.

This is a video where I describe principles of right triangles and highlight a few places were they are found in rescue disciplines and how understanding them can really up your game. 

This is the study Russell McCullar and I did on Progress Capture Devices. We presented it at the International Technical Rescue Symposium in 2014 and won "Best New Research" for our efforts. We introduced the concept of a "System Operation Limit", whereas a system reaches a limit where it does not "fail" but the rope begins to slide or slip through a device. The same year Kirk Mauthner spoke of the same phenomenon and referred to it as "Force Limiting". Force Limiting was the better term (as opposed to an SOL...), and is what is used in mainstream today. 

I received a phone call asking about the competency of a "long" 4x4 used as a stimple in a doorway. I threw this together pretty hastily and shot it off. It is not my best work, and I think there are other points to be made, and other aspects to be analyzed, but it might be worth a look...

This is about Bowline Names and Bowline Variations

This was created to compile several principles of Big Rig lifting and moving. 

I created this video to explain why and how a basket "hitch" is twice as strong as a vertical "hitch". This topic is interrelated to D/d ratio, and the video gives a short explanation and introduction to D/d. 

To the left is a single page handout providing some "Rules" when working with ropes around elevators. Below are seven handouts that support these rules and provide the "why" behind them. The first Three are focused on Anchoring inside building/elevator lobbies. The second four are focused on AHD (Artificial High Directional) options. 

This is a quick reference card for the Standardized Commands and Frame Building steps used by Origin Rigging. The Frame Building steps are an adaptation of the steps outlined in the Rock Exotica version of the Vortex user manual. 

The PDF is intended to be printed and cut along the dotted lines, then laminated in business card sized 5mm sheets. 

These diagrams demonstrate optimal "Guyline Paths" and the four ways to affect Guyline Paths. 

This analysis review the "Reeve Technique" for use with Tripods. This technique goes by many names: "Passthrough", "Inline", etc... I prefer the term "Reeve Technique" because it looks like and functions like the reeve line of an English Reeve highline.