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] [SOUND] I'm Dave Dalrymple. Welcome to Fire Engineering's Training Minutes. Today we're gonna talk about tension buttress stabilization. Now tension buttress stabilization's not hing more, it's just simply putting a right triangle against the vehicle itself. Now there's a lot of different strut systems out there for where 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 gonna first put in a cradle of cribbing underneath the vehicle, all the way around it, to fill in all the voids. Then we're gonna work from the dirty side which is the undercarriage side, and then to the clean side, which is the sheet metal side. We're gonna put two struts 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're going to put in a cradle of crimping around the vehicle. Both the dirty side, the under carriage side and the clean side. [MUSIC] [MUSIC] [MUSIC] Now they're putting two struts in place. You 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 rack strap and run that ratchet strap from the base of this trucks to the vehicle itself. Thus making a complete right triangle. Against the vehicle, widening it's base of contact. Any extra strap from the ratchet strap we either gonna wrap the base of the strut or we're gonna tuck it up close to the vehicle itself so it stays away and it's not a trip hazard. [SOUND]. [MUSIC] Now once the dirty side is secure we're gonna come over and work on the clean side. The reason why we work on the dirty side or the undercarriage side first is many times we're gonna have to make an opening or a purchase point on the clean side. Thus we're gonna 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 captures the other side of the vehicle, the vehicle still stays solid. Now many times we'll only be able to get three struts in. In this vehicle we're able to get four in. Think about it, the vehicle on it's side. What part of the vehicle are you gonna take apart? You're only gonna take, remove the roof, extrication wise. [MUSIC] [SOUND] [MUSIC] Now 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 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. Thus widening the base of contact, the vehicle has with the ground. Once we've completed both sides. Will make sure that all the ratchet straps are tight and then we're complete. The vehicle is solid. Okay. Our crew finished up our tension buckles stabilization evolution. They went through it step by step, simple basic process. It was very quick. It locked the vehicle in place. 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 Homacho and I'd like to thank you for watching Training Minutes. Be safe out there.