Mainline Systems and Operations Archives

Hybrid High Directional Systems for Vertical and Horizontal Rescue Operations

Lance Piatt / Blog, Designing Your Processes, Dynamic Directional, Elevated Anchor Systems, Litter Operations, Mainline Systems and Operations, Portable Anchors, Team Competencies, Two (Twin) Tension Rope Systems, Two Tensioned Rope Rescue Systems, Uncategorized

Hybrid High-Directional Systems for Vertical and Horizontal Rescue Operations Technical rescue systems are often categorized by their primary function. Some systems are designed to manage vertical movement. Others are designed to support horizontal transportation. Complex terrain, however, rarely presents a single movement problem. Rescuers may need to raise a patient from below a cliff edge, […]

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Litter Operations and Patient Evacuation in Technical Rescue

Lance Piatt / Blog, Designing Your Processes, Litter Operations, Mainline Systems and Operations, Mechanical Advantage, Pickoffs

Sign Up for Free E-Book Litter Operations and Patient Evacuation in Technical Rescue Technical rescue environments rarely fail because of a lack of gear. More often, they fail because teams underestimate movement, terrain transitions, communication breakdowns, or the physical demands of transporting a patient through difficult ground. Litter operations sit at the center of all

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Mechanical Advantage and Anchor Systems in Rope Rescue

Lance Piatt / Anchoring, Anchors, Blog, Mainline Systems and Operations, Mechanical Advantage

In rope rescue, mechanical advantage and anchor systems are never separate subjects. Every haul system depends on an anchor, and every anchor must be capable of resisting the forces a mechanical advantage system creates. That relationship is often misunderstood. Rescuers may focus on the efficiency of a 3:1 or 5:1 system, yet overlook how redirects,

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Cross Haul System Calculator — Building a Force Analysis Tool for Horizontal Rope Access

Lance Piatt / Blog, Designing Your Processes, Dynamic Directional, Education, Elevated Anchor Systems, Highline Rigging, Horizontal Rigging, Litter Operations, Mainline Systems and Operations, Portable Anchors, Principles of Learning, TerrAdaptor, Two (Twin) Tension Rope Systems, Two Rope Offsets, Two Tensioned Rope Rescue Systems

Building a Force Analysis Tool for Horizontal Rope Access TTRS Configuration · Vortex AHD Leg Forces · Exit Zone Analysis SPRAT Level 2 Required Skill · Pre-operational Planning Tool Moving a package horizontally across a span — a patient in a litter, a gear load, a confined space casualty — sits at the intersection of

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Highline Systems Fundamentals in Technical Rope Rescue

Lance Piatt / Blog, Designing Your Processes, Dynamic Directional, Elevated Anchor Systems, Highline Rigging, Knot Passing, Mainline Systems and Operations, Tracking Lines

Highline systems are built to move a load across a horizontal span when direct vertical access is not possible or introduces unnecessary risk. The system must maintain clearance, control, and stability while transporting the load from one side to the other. This is not achieved through a single rope or device, but through a structured

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Artificial High Directionals When They Are Needed and How They Support Rescue Operations

Lance Piatt / Arizona Vortex, Artificial High Directional AHD, Blog, General Rigging, Mainline Systems and Operations, Twin Tension Rope System

Introduction Artificial High Directionals (AHDs) represent a decisive shift from basic anchor-based rigging into controlled, engineered system behavior. Teams that are competent in raise and lower operations often reach a point where efficiency, safety, and control begin to degrade—not because of poor technique, but because of environmental limitations. Edges, terrain transitions, and structural barriers introduce

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Artificial High Directional A-Frame — Sideways Configuration (SA Frame)

Lance Piatt / Artificial High Directional AHD, Blog, Designing Your Processes, Education, Elevated Safety, Horizontal Rigging, Mainline Systems and Operations

Artificial High-Directional A-Frame — Sideways Configuration (SA Frame) The sideways A-frame configuration is a contingency Artificial High Directional used when no suitable anchors exist directly over the edge, and the force must be managed laterally across the surface. Unlike the standard forward-biased A-frame, the SA frame operates with the structure oriented 90 degrees to the edge,

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Why Austrian Economics Belongs in Rope Rescue

Lance Piatt / Anchors, Artificial High Directional AHD, Blog, Designing Your Processes, General Rigging, How-To Concepts, Mainline Systems and Operations

Why Austrian Economics Belongs in Rope Rescue Wealth, Labor, Time, and Risk Allocation Technical rope rescue looks like engineering. We calculate force. We build anchors. We manage friction and redundancy. Physics sets the outer limits. If we violate those limits, the system fails. However, engineering alone does not explain how decisions unfold on scene. In

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Two Tension Offset Systems for Complex Rope Rescue

Austrian Economics and Technical Rope Rescue

Lance Piatt / Anchoring, Anchors, Artificial High Directional AHD, Blog, Designing Your Processes, Elevated Anchor Systems, How-To Concepts, Mainline Systems and Operations, Patient Packaging, Safe Practices, Scene Management

Austrian Economics and Technical Rope Rescue Scarcity, Trade-Offs, and Rigging Under Pressure Technical rope rescue looks like engineering. We study force vectors, anchor strength, friction, and redundancy. We calculate loads. We manage geometry. Physics defines the hard limits. If we exceed those limits, the system fails. However, physics does not decide what we build. Two

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Principles and Architecture of Mechanical Advantage in Rope Rescue

Lance Piatt / Blog, Designing Your Processes, Mainline Systems and Operations, Mechanical Advantage

Technical Systems Report: Principles and Architecture of Mechanical Advantage in Rope Rescue 1. Purpose and Scope of Force Analysis In professional technical rescue, rigging must transition from intuitive guesswork to a disciplined application of structural physics. Establishing a rigorous analytical framework for force and work is the primary safeguard for system integrity. By defining these

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Horizontal Rope Rescue Systems and Highline Movement Techniques

Physics of Horizontal Rope Rescue Systems

Lance Piatt / Anchoring, Anchors, Artificial High Directional AHD, Blog, Dynamic Directional, Highline Rigging, Horizontal Rigging, Mainline Systems and Operations, Twin Tension Rope System

Physics of Horizontal Rope Rescue Systems Why sideways movement is the real test of a rigger’s mind. Vertical rope work is the entry exam. Gravity defines the path, the system behaves predictably, and most mistakes are recoverable. But move a rescue load sideways—even fifty feet across a gap or diagonally off a tower—and everything changes.

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Balancing Online and Hands-On Training -Knots for Force Multiplication in Rope Rescue - Steep Highline Calculations and Rigging Techniques

High Tension Highline Rigging Mastery for Technical Rope Rescue

Lance Piatt / Anchors, Artificial High Directional AHD, Blog, Designing Your Processes, Mainline Systems and Operations, Principles of Learning, Technical Learning, Twin Tension Rope System

The ability to span a canyon, river, industrial void, or structural gap is one of the most demanding skills in advanced rope rescue. While offsets, tracklines, and guided systems are essential tools, the true test of technician-level capability is the high-tension highline. Unlike everyday rigging, high-tension systems do not forgive misunderstandings in geometry or guesswork

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Horizontal Movement Systems in Rope Rescue

Counterintuitive Principles of Elite Rope Rescue Systems

Lance Piatt / Anchoring, Blog, Designing Your Processes, Mainline Systems and Operations, Twin Tension Rope System

1. The Ultimate System Test: What Happens If Everyone Lets Go? The “whistle test” is one of the simplest yet most powerful tools in rope rescue. It strips away the illusion of operator control and evaluates the system on pure mechanical resilience. If a sudden distraction — a falling rock, a hornet swarm, or a

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Twin Tension Rope Systems (TTRS) Mastery for Rescue Safety

Lance Piatt / Blog, Mainline Systems and Operations, Pulleys & Mechanical Advantage, Twin Tension Rope System Clutch, Two (Twin) Tension Rope Systems, Two Tensioned Rope Rescue Systems

In modern technical rescue, moving beyond traditional main-and-belay configurations is essential to achieving superior safety margins and operational efficiency. The shift is towards Dual Mainline Rope Systems, also known as Twin Tension Rope Systems (TTRS). These systems fundamentally change the dynamics of load control by actively engaging both ropes to share the load equally, thus

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Hybrid Patient Connection Setup with Skate Block and Tracking Line

Integrating Artificial High Directionals in Skate Block Systems

Lance Piatt / Blog, Mainline Systems and Operations, Skate Blocks

Integrating Artificial High Directionals (AHDs) within Skate Block Systems transforms a simple, low-tension rescue technique into a controlled, highly adaptable rigging platform. This integration enables teams to overcome edge trauma, improve resultant alignment, and achieve greater system precision—all without sacrificing the lightweight, small-team functionality that defines the skate block. In essence, an AHD turns a

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Skate Block Systems in Technical Rope Rescue

Lance Piatt / Mainline Systems and Operations, Skate Blocks

Skate Block Systems provide a streamlined, efficient rigging solution for small teams performing rescues or load movements in specialized environments. These systems are particularly effective when personnel and time are limited—such as during tower maintenance, communications rigging, crane work, or industrial access operations. Unlike full highline or two-rope offset systems, the skate block uses the

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Dynamic Forces and Shock Loading in Horizontal Track Systems

Lance Piatt / Blog, Designing Your Processes, Mainline Systems and Operations, Principles of Learning, Two Rope Offsets, Two Tensioned Rope Rescue Systems

Dynamic Forces and Shock Loading in Horizontal Track Systems In rope rescue, most failures come from what wasn’t seen, not what wasn’t built. A system can be geometrically perfect, the anchors flawless, and the tension within the limits of every catalog rating—until motion enters the picture. Once a load begins to move, the numbers change.Ropes

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Mainline and Belay Operations in Horizontal Track Systems

Lance Piatt / Blog, Designing Your Processes, Mainline Systems and Operations

Mainline and Belay Operations in Horizontal Track Systems In rope rescue, tensioned track systems are among the most complex setups a team can face. Moving a litter horizontally across a canyon, river, or urban void requires precise control of forces, anchors, and redundancy. The difference between success and disaster is often in the management of

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Ideal Sag in Tensioned Track Systems for Rope Rescue

Lance Piatt / Blog, Highline Rigging, Mainline Systems and Operations, Technical Learning

Why Sag Is the Silent Killer Ideal sag in tensioned track system for rope rescue is not an easy thing to figure out. If you’ve ever stood under a loaded tensioned track line, you know the truth: it’s not the rope that fails first, it’s the anchors. They groan, creak, and sometimes shift under loads

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climber fall rescue - 5 First Principles of Rescue Rigging

Climber Rescue Team Using Twin Tension Rope Systems

Lance Piatt / Blog, Designing Your Processes, Mainline Systems and Operations, Twin Tension Rope System

Climber Rescue Team Using Twin Tension Rope Systems A climber begins their ascent. Movements are steady and deliberate. Each step shows control. But even skilled climbers can fall. And when they do, preparation makes the difference and it is here we see a Climber Rescue Team Using Twin Tension Rope Systems. The Fall: Fast Response

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Mainline Systems and Operations