Tue, 21 Feb 2012|
Mike Wilbur and crew demonstrate two scenarios for properly aligning aerials--both mid-mount and rear-mount--with a building.
[MUSIC] Hi, I'm Mike Wilbur. Welcome to Fire Engineering's Training Minutes. Today, we're going to teach you how to successfully position an aerial device, both rear-mounted and mid-mounted aerial devices on a building, by getting the apparatus centered in the building. By using the axles, or some other geometry, on the scene to get the apparatus centered. And here we're gonna start with our first truck pulling in. As the apparatus pulls in, the operator is going to start to size up on the building, he's gonna look at side D. He's looking for any smoke. Any people that might be entrapped. He's gonna pull up. He's looking in the mirror right now at the tandems and the turntable. And he's going to align them with the steps over on the A side of building. As the operator gets out, the operator is then going to check. The AP corner, the B side of the building, again for fire, smoke, or any people that may be entrapped. Seeing that nobody's entrapped and wanting the apparatus in the center of the building, we're now going to set the apparatus up, for maximum scrub area. Understanding that. Fire conditions, the location of civilians who are trapped, smoke exposures are all going to dictate as to where and how the apparatus is going to be positioned. But to get a center position on the building like this, the turntable needs to be in line. With the center of the building, and the best way to achieve that is by looking in the right side mirror and aligning the tannins just past that object. And as you can see from this shot, the apparatus is gonna be perfectly centered in the building. >> For this positioning exercise, we're going to use a midmounted power ladder. As it relates to the first exercise using a rear mounted aerial, this is going to be vastly different. In the aerial exercise you remember that we used the ten and axle, to judge in relationship to the front, step here as to where the, the apparatus needed to be positioned in order to cover the front of the building and be centered. In the case of the mid mounted tower, obviously the turntable is not by the tandem axle, but it's actually between the tandem axle and the front axle. And so the operator is going to look in his mirror and the big outrigger arm that's alongside the truck right by the turntable. Is going to be the, the point where he is going to try and center that, on the stairs behind me. In order to get centered on the building. As the apparatus approaches, the apparatus operator is going to start his building sides up on a starting with side d. The operator is looking for smoke. Fire, any potential victims that are entrapped in a building, he's gonna be now looking in his mirror, trying to take the outrigger arm and put it right up by the steps to get centered in line by the building. As you can see the outrigger arm is directly in line with the turn table and that's what we're after. He pulls up, kicking the cab out of the way, leaving enough room for the outriggers and the jacks to go down. The operator is then going to come out of the apparatus. He's going to come around and he's going to look at the B side. And he's looking at the B side again to complete his size up. To look for any smoke, any fire, or any potential victims trapped. Obviously if there were victims trapped, he would have to pull the apparatus up. There are no victims trapped and so we want to leave the apparatus centered on the building. And now we're gonna get ready to operate. [NOISE] As you see with the last two revolutions mirror driving is very difficult, however it's not impossible. [NOISE] Unlike coming from the other direction, as the apparatus approaches. With the driver's side on the building side, it becomes much more easy to position. The apparatus operator no longer has to mirror drive and use the mirrors. The apparatus operator can now position by sticking his head out the window, and then aligning. On the turntable, with the center of the building, by just giving it a visual out the window. Much easier. Unfortunately, in the fire service we don't have every building on the driver's side of the apparatus. And so, you need to learn to do both. As you can see from the previous two scenarios,. It is of vital importance to conduct a complete size up of the building, but also to get the apparatus positioned properly. Hopefully with this new found information, it will make your operations easier on the fireground. For Fire Engineering Training Minutes, this is Mike Wilbur.