Thu, 2 Sep 2010|
Dave Dalrymple explains this vehicle extrication technique, which entails stabilizing a vehicle on its side by placing a right-angle against the vehicle. Sponsored by Holmatro.
[MUSIC] [MUSIC] I'm Dave Dalrymple, welcome to fire engineering's training minutes. Today, we're gonna talk about tension buttress stabilization. Now, tension buttress stabilization, is nothing more, just simply putting a right triangle against the vehicle itself. Now there's a lot of different strut systems out there for if a vehicle's overturned or if it's upside down, or if it's on a different object. We're gonna show you simple basic, the simple basic principle behind tension buttress cribbing. So basically what we're gonna do, we're gonna come in on a vehicle on it's side. We're going to first put in a cradle of cribbing underneath the vehicle. All the way around it to fill in all the voids. Then we're going to work from the dirty side, which is the under carriage side. and then to the clean side, which is the sheet metal side. We're going to put two strut's in on the dirty side. And two struts in on the clean side, thus capturing the vehicle and increasing it's basic ground contact. Now our crew is going to come in, they're going to go through the entire evolution step by step. So let's take a look at what they're going to do. Here, our rescue crew is coming in. They are going to put in a cradle of cribbing around the vehicle. Both the dirty side, the under carriage side and the clean side. [MUSIC] [MUSIC] [SOUND] [MUSIC] Now they're putting two struts in place. We wanna try and stay away from any suspension components and stay between. The wheels, inside of the wheels, on the dirty side or undercarriage side of the vehicle. Once the strut has been placed, then they're gonna take a ratchet strap and run that ratchet strap from the base of the strut to the vehicle itself, thus making a complete freight triangle. Up against vehicle. gliding in. It's basic contact. Any extra strap, from the ratchet strap, we're either going to wrap around the base of the strut. Or we're going to tuck it up close to the vehicle itself so it stays away and is not a trip hazard. [MUSIC] [MUSIC] Now once the dirty side is secure we're going to come over and work on the clean side. The reason why we work on the dirty side or under carriage side first is. Many time's we're going to have to make an opening, our purchase point on the clean side. Thus, we're going to either have to cut into the metal or widen the metal. If we do that we're putting pressure against the other side of the vehicle. But since we've already captured the other side of the vehicle, the vehicle still stays solid. [MUSIC] Now many times we'll only be able to get three struts in. In this vehicle we're able to get four in. [MUSIC] Think about it, the vehicle on its side. What part of the vehicle are you going to take apart. You're only going to remove the roof extrication wise. [MUSIC] Here the crew is making a purchase point to hook the strap, in the front. In the back they made a purchase point, to insert the end of the strut. And again just like the dirty side, once the strut is in place we're gonna run a ratchet strap from the base of the strut to the vehicle itself to complete the right triangle. [MUSIC] Thus widening the base of contact the vehicle has with the ground. [MUSIC] Once we've completed both sides. We'll make sure all the ratchet straps are tight and then we're complete. The vehicle is solid. Okay, our crew finished up our tension buttress stabilization evolution. They went through it step by step, simple basic process. It was very quick. It locked the vehicle in place. Very po, very positive. Again, we wanted to show and demonstrate in this evolution the simple principle behind tension buttress stabilization, nothing more than a right triangle against the vehicle. There's other systems out there that can be complex that work well, however, they all work behind this simple principle. I'd like to thank our sponsor Homeachro, and I'd like to thank you for watching Training Minutes. Be safe out there. [BLANK_AUDIO]