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Determining Mechanical Advantage using the T-Method with an added Pulley on the Load

By Lance Piatt / Pulley Systems, Pulleys & Mechanical Advantage

Calculating mechanical advantage: the T-system The subtle but significant difference to this system… a pulley on the load and the main line terminated at head of the tripod. We have a 6:1 mechanical advantage in the pulley system. 1. Assume continuous strands of rope have the same amount of tension. If we start at the …

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Mechanical Advantage Using the T-Method with a Horizontal System

By Lance Piatt / Pulley Systems, Pulleys & Mechanical Advantage

Calculating mechanical advantage: the T-system 1. Assume continuous strands of rope have the same amount of tension. If we start at the point where effort is applied and assume that we apply one unit of tension (1T) then we can assume that the tension along this single strand of rope will be the same throughout. …

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T Method Applied To Mechanical Advantage Systems Using Rope Grabs

By Lance Piatt / Pulley Systems, Pulleys & Mechanical Advantage

T Method Applied To Mechanical Advantage Systems Using Rope Grabs. Calculating mechanical advantage: the T-system 1. Assume continuous strands of rope have the same amount of tension. If we start at the point where effort is applied and assume that we apply one unit of tension (1T) then we can assume that the tension along …

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Mechanical Advantage: Calculation of MA with the T-Method in a Simple System

By Lance Piatt / Pulley Systems, Pulleys & Mechanical Advantage

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Rigging slings on carabiners

By Lance Piatt / General Rigging / 29 Comments

Roping and rigging equipment compatibility Industrial round slings are normally used to connect a load or anchor to rigging equipment via shackles. There seems to be an increasing tendency to use these round slings for rope based activities with carabiners. Generally there is an awareness that their added bulk may have an impact on the …

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Pulleys & Systems for Rescue & Industrial Rope Access

By Lance Piatt / Pulley Systems, Pulleys & Mechanical Advantage / 17,091 Comments

Pulley Systems Introduction Victims in the field of rescue often times find themselves stranded somewhere well above head level on cliffs, mountains, bridges, buildings and other structures. The obvious challenge of importance to the rescue attempt is the need to get the victim down. Any ultimate benefit from the rescue maneuver hinges upon …

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When do I remove rope or a harness from service?

By Lance Piatt / Professional Standards, Safe Practices / 43 Comments

When do I remove rope or a harness from service? Rope: A non-destructive test that tells how much strength your rope has left does not exist at this time. The decision to retire a rope or to keep it in service relies on good judgment that comes only from experience in working with rope. Inspecting …

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Arizona Vortex SA (Sideways A) Frame with Compression Member

By Lance Piatt / 5th Class Litter Raise, Anchoring, Arizona Vortex, Artificial High Directional AHD, Portable Anchors / 9 Comments

The Arizona Vortex Workshop was hosted by Rescue Response Gear and The Rigging Lab. CMC Rescue taught the 3 day workshop and was well attended. The Side A or SA Frame is probably the safest manner in which to set up an artificial high directional using the Arizona Vortex. Very accommodating to properly setting the …

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Twin Highline Unit 3 : Working Platform for Ascent and Descent

By Lance Piatt / Anchoring, General Rigging, Pulley Systems, Team Competencies / 5 Comments

The third part in the series on the rigging of a Twin Highline. This unit goes through the pieces and theory behind the “Platform” from which a rescuer or worker can move across the area beneath them, as well as lower down to it and ascend back up to the line centered around the …

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Twin Highline Track Line Unit 5 : Twin Highline and Track Line Using a Manned Belay Part 1

By Lance Piatt / Anchoring, General Rigging, Safe Practices / 5 Comments

This segment goes through the first part of the process of using the Twin Highline Track Line with a belayer belaying the rescuer or worker as they move down the line. The working platform is a systems of ascent device, descent device and fall protection devices. A clean set up indeed. The working platform …

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Search Results for: two tension

Determining Mechanical Advantage using the T-Method with an added Pulley on the Load

Mechanical Advantage Using the T-Method with a Horizontal System

T Method Applied To Mechanical Advantage Systems Using Rope Grabs

Mechanical Advantage: Calculation of MA with the T-Method in a Simple System

Rigging slings on carabiners

Pulleys & Systems for Rescue & Industrial Rope Access

When do I remove rope or a harness from service?

Arizona Vortex SA (Sideways A) Frame with Compression Member

Twin Highline Unit 3 : Working Platform for Ascent and Descent

Twin Highline Track Line Unit 5 : Twin Highline and Track Line Using a Manned Belay Part 1

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