Why register? ...To Enhance Your Experience
+ Reply to Thread
Results 1 to 6 of 6
  1. #1
    Forum Member MichaelXYZ's Avatar
    Join Date
    Jan 2012
    Location
    San Diego
    Posts
    354

    Default Let's Talk Highlines

    My only exposure to highlines is RRGTV, so I find myself with a lot of questions. Now sag in the line seems to be a critical element. The more sag, the less load on the anchors, but with this also seems to come a price which is too much sag will make it impossible to bring the patient and rescuer to the retrieval point. So what is the ideal sag which does not load up the anchors, yet allows a safe patient retrieval? Hope that makes sense.

    Name:  highlinevectors1.jpg
Views: 261
Size:  22.7 KB


  2. #2
    Forum Member
    Join Date
    Feb 2006
    Location
    Kansas
    Posts
    59

    Default

    RRGTV is a great resource. However, the videos only show a small part of the lecture. I'm sure Pat is not in the business of giving away too much info for free. He likes to cable yard for sag. You could use the rule of 12s for 7/16, or rule of 18 for 1/2". Number of haulers times MA not to exceed 12 or 18. Most of us simplify the process by only applying pretension to the highline with one person pulling on a 2:1. If you need to clear something add a 3:1 and another hauler. This tension method will also keep your numbers above a 10:1. If things are a little outside of the norm, you would need to know when to add additional track lines to keep your SSFs up. With highlines there's a lot that can go wrong. It's helpful to know someone with a load cell as you practice. Otherwise you can get yourself into trouble very quickly.
    Last edited by bottrigg; 03-29-2013 at 09:32 AM.

  3. #3
    Forum Member
    Join Date
    Jan 2012
    Posts
    76

    Default

    Quote Originally Posted by MichaelXYZ View Post
    My only exposure to highlines is RRGTV, so I find myself with a lot of questions. Now sag in the line seems to be a critical element. The more sag, the less load on the anchors, but with this also seems to come a price which is too much sag will make it impossible to bring the patient and rescuer to the retrieval point. So what is the ideal sag which does not load up the anchors, yet allows a safe patient retrieval? Hope that makes sense.
    Your retrieval point is the same regardless of the amount of sag in the rope. It's going to point the point where you're unable to pull the carriage past on the trackline. It is not impossible to haul a load up to the retrieval point, you just put a haul system on the horizontal control line.

    Sag will cause a problem if there is something (water, rocks, etc...) in between your two highline anchor points that you want to clear. It is then that you have to provide more tension or possibly add more tracklines.
    I used to be DCFDRescue 2. Forum changover locked me out.

    www.rescue2training.com

  4. #4
    Forum Member MichaelXYZ's Avatar
    Join Date
    Jan 2012
    Location
    San Diego
    Posts
    354

    Default

    I get what your saying. BTW I thought your use of the Gin pole in the atomic wedge was real cool. Have you guys tested that with data?

  5. #5
    Forum Member
    Join Date
    Jan 2012
    Posts
    76

    Default

    Thanks! No tests yet; I'll be doing some in the coming months, though.
    I used to be DCFDRescue 2. Forum changover locked me out.

    www.rescue2training.com

  6. #6
    Forum Member MichaelXYZ's Avatar
    Join Date
    Jan 2012
    Location
    San Diego
    Posts
    354

    Default

    I hope you share your test results on your website. I can see the application of your AW in the industrial sector (albeit as infrequent) as well as urban.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. There's talk of a BRR in MD...
    By BigRig in forum Maryland
    Replies: 0
    Last Post: 03-23-2005, 05:26 PM
  2. Highlines - Rope Size/Methods
    By jmatthe2 in forum Specialized Rescue
    Replies: 3
    Last Post: 03-11-2005, 06:02 PM
  3. Light Fanatics, CLICK HERE..You wanna talk lights Lets talk...
    By rescuepimp911 in forum Fire Explorer & Jr. Firefighting
    Replies: 5
    Last Post: 10-16-2002, 05:17 PM
  4. Don't talk about it...
    By JTL in forum Firefighters Forum
    Replies: 71
    Last Post: 05-07-2002, 02:37 PM
  5. Highlines
    By JStrickTRT1 in forum Specialized Rescue
    Replies: 3
    Last Post: 12-27-2001, 05:39 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts