FireNuggets 2017 July | Page 25

May 2017 FireNuggets, Inc your pull on the nails that are attaching these boards to the roof rafter or truss. This saves us a lot of trouble and effort. Work smart and control these variables before they arrive. Pull the boards. expanding vid 1. They can rocket through the ceiling and possibly strike a FF or pierce the attack hose. 2. They fall in and land catawampus across the bottom chord of the truss system or ceiling joists, and directly in the way of the area of ceiling you still need to breach to complete the ventilation opening. A cut piece of plywood with several layers of “comp” (composition roofing paper) or shingles that was cut from a roof system that had trusses or rafters at 24” o.c. (on center) makes for a fairly heavy piece of board that you now have to try to move out of the way using your hook. Couple that with any heat and smoke that may already be exhausting from your opening and one could see why this is an unenviable position to be in. We always try to drive the pick of the fireman’s axe or tines of the rubbish hook into the cut piece of board nearest the rafter or top chord of the system and pull the boards off of and out of the opening. Once the saw FF has cut the opening, engaged the brake, and exited the cut area, the hook firefighters or “pullers” then enter and begin working the cut sections of roof. By raising the tool over their heads and then swinging the tool in a downward motion, the “pullers” will drive the tines of the rubbish hook or the pick of the firemen’s axe into the wood near the rafter. Once the tool is buried into the material, the puller will then forcefully and rapidly yank the tool back up into themselves with the hopes of defeating the nail from the rafter and removing the cut sections of board. Driving the hook near the rafter will maximize the force of By Firefighters, For Firefighters Systematically work the opening: We always try to keep our momentum directed back towards our escape route. This is the sounded path we took to arrive to the involved area. We make all of our cuts so that our head and bottom (final) cut directs our forward momentum out of the work area and back towards our escape route. So the cutting sequence follows the letter “S”. By starting our head cut back the way we came, we’ll systematically end up making our bottom cut back to our sounded path as well. The "puller" or hook firefighter then enters the work area and pulls the boards in the same systematic sequence that will keep the venting fire to his back and never between him and the sounded escape route (bearing wall). To do this, the "puller" starts removing the boards farthest from the escape route and eventually back to the sounded path from which we came. He then flips the hook and begins pushing in the ceiling farthest away and back towards the escape path always keeping himself between the fire and the escape route. Again, it’s about forward momentum. We encourage use of j-hook you to flip the hook around thus using the D- handle to start pushing the ceiling in. This will minimize the chances of your hook becoming entangled in any electrical wiring, utility plumbing, or HVAC ducting. Whenever possible, we try to locate our bottom chord or ceiling joist with the D- handle by inserting it until you punching through vid hit ceiling and then swinging it ! of 28 25 !