For over 40 years, CMC (formerly CMC Rescue) has been providing the world's most trusted life safety equipment and education to the rescue and work-at-height communities worldwide.
You generally wouldn't use this for a rappel where you have to pull down the rope. This is more useful for extended top rope anchors, top rope solo fixed lines, or a rappel where you will ascend or hike back up to the top.
Hi there! Yes and no. This video is a re upload of the past video but with some improvements on terminology. After discussing with our instructors we decided to make some changes in an effort to be 100% consistent and accurate in our messaging. Thank you for watching, hope you enjoy this video as well as our future content.
You definitely know what you're doing, that's for sure. My recommendation is to slow down when tieing. Obviously, we can pause the video if needed but it's much smoother and easier to comprehend if we don't need to pause it as often.
Look a little deeper than just recommendations that are anecdotal. Look at all of the cases of aerial ladder collapse and failures. There are many. Often these failures include weight and ladder movement. Loads that create a twist to the ladder, such as moving a load side to side, places all of the load onto one ladder channel with a resultant of pulling up on the opposite side. Raising and rotating at the same time is one of the largest areas this happens. The longer your ladder is extended, the more the bed sections pry against the ladder bed itself. This is a class 1 lever at its pry point at the bed sections and a class 2 when coming over the hydraulic arms. My rescue utilized both our straight stick tiller mounted ladders and our rear mount buckets for anchor points. In doing this we never extended the ladder beyond 50 percent extension. We ensured all ladder locks were engaged and the ladder controls were idled down and covered. We operated as close to 45 with a max of 60 degree slope to ensure resultant would pull back towards the turntable. For belay, we utilized the petzl ASAP lock so that there was minimal impact load from the potential failure. As to system, most frequently we utilized our anchor and system off of the rescue and not the ladder. Consider engineered anchors off of a separate apparatus where line runs as close along the line of the bed. In using another base anchor for your system, you can often move the run above the ladder similar to how the cranes cables run in truss constructed cranes. Consider a system such as a harken lokhead winch that guns back to your engineered anchor off of another apparatus. The 45 - 60 degree aerial alignment allows the rope to run above the ladder without running down rungs. Great discussion. Stay safe and practice before you need it.
it is concerning that CMC would publish a video that does not show a fully engaged parking brake. Instructional videos must set the bar and aim for perfection.
Great podcast, Here is one book that you might find useful for leadership and pushing authority down to the folks in the field. Corps Business: The 30 Management Principles of the U.S. Marines David H. Freedman
I think its funny how in the rope rescue world, things just go through a continuous cycle. Things are used, then for some reason theyre not, then a few years later theyre back.
Shame on yall for putting such a hefty price on something that is meant to save a life. Especialy when it costs way less to produce, none of you care about the lifes of first responders , you just wanted more profit .
