Good video. I was a former volunteer firefighter and I was a certified firefighter 2 and we did those types of training. We done three realistic vertical ventilations during a real fire during my 5 years of service with my Dept. It sure is important to do vertical ventilation it works. It should only be done with safety in mind. It looks easy but wearing all that gear makes it hard so practice while wearing the SCBA is important. All firefighters need to be aware of the the two firefighters on top of roof. I took a college course and became certified before I was able to do interior firefighting. So training videos are important. We had weekly training. Knowledge of firefighting techniques are essential in structural firefighting. Also you have to wear SCBA while doing the ventilation. Department store roofs are dangerous they cave in quickly. So don't risk going on top of a building like Walmart.
You don't engage the chain break when still in the cut. Full RPM's until out of the cut and then let the RPM's go down then engage chain break. You can make the chain jump off the bar if you engage the chain break when running full RPM's. In my opinion if you have to reset your footing then you engage the chain break other than that you don't have to engage the chain break every time. Just slows the operation down. Also as shown in cut one you never take your hands off the saw. You run full RPM's until out of cut bring RPM's down then roll your wrist downward to push on the chain break. Especially running high RPM's and you take a hand off the saw things can end badly especially if its a carbide big tooth k-12 with the feet. Very Dangerous. Train Like You Fight!
We teach that that your #1 and #3 cuts are reversed for us. We scribe across the roof to find the rafters on our 1st cut so when you roll the decking you roll a full span section. We also plunge the saw straight down until we hit a rafter, that was more of the chain hits the face of the beam and you can feel the rafter. When the saw is at a shallow angle its more likely you will cut through a good portion of the rafter and not feel it as its a lesser exposure to the chain. Rolling the rafter towards you also helps shield you from that initial opening of the roof directing it away from you. Nice vid, thanks for sharing
It shows how to cut a hole not HOW VVing works. Heat rises has almost no value here. All you are doing is introducing a furnishing fire to a structural attic and Boom, you have your typical VV.
We just performed this drill. Cutting above the fire is ideal, otherwise the fire will "chase the opening" meaning you may have additional fire spread due to the vent hole. Also, make sure cuts and ladder are on the windward side close to the peak to take advantage of drafting.
How about break the window in the fire room and put water on the burning material from outside and the fire is out before they could set the ladder? Fast, Safe and with limited water use because you can see what is burning.
JB91710 So what if the fire is in the knee walls, collar tie and rafter bays, the firefighters have zero visibility and are baking in an oven, there’s a known victim in the half story who is also baking and has an unprotected airway, and every time you poke a hole in the knee wall to get water on the fire it blowtorches out of the knee wall and lights up the contents of the half story? Just break a window and wave a fog stream around right JB? We have so much to learn from you old man. You’re right. Time to hang up our ladders and saws.
@@JB91710 Depends if there is a Interior Attack Crew already inside. You Vent that Window and put a Stream into the Window, you just Changed Flow Path and the fire is going right at the Interior Attack Crew. If an Emergency Evacuation is executed and the Attack Strategy has went defensive then yes but you Never put a Stream in a Window when there's an Interior Attack Crew working. If you put a stream in a window when there's an interior attack crew and if they survive there will most likely be some very pissed off people at you. Work as a team, you might be doing different operations but work as a team.
@@nickolasguile8734 You can get tank water on Visible Burning Material faster than you can get dressed and get the front door open. You Never go inside before extinguishing the visible fire. That's just common sense and logic. You protect the victims and entering firefighters by eliminating the threat.
@@FreeMongooose Could you have been more vague and disjointed? What if a meteor fell through the roof? Why don't you Try to lay out one single tactic or better yet a Job Description? Something that you can actually discuss. You didn't impress me but one person thinks you're swell.
A place to put one of your feet so you have a Square Balance rather than have both feet on the Roof Ladder or a foot just on the roof which both feet on the roof ladder displays you being unbalanced on the first and second cut and the start of the third and fourth cut and with your foot just on the roof if your foot goes through the roof and if your cutting in the correct area all those byproducts of combustion and heat are going right up your leg and so on which is very bad. Whereas using the haligan your weight is on the ads, pik end the 1/2 hole the pik makes rather than the roof structure itself. Better to be safe than sorry
How do you get the ladder up too the roof top? Like, put another ladder on the side of the house, climb it, then have someone else hand the hook ladder up too you? And whats the point of cut #2?
yup my dad almost died in a roof collapse but wasnt wearing his scba and sucked in a bunch of smoke he made it off the roof fine and gor on the ladder in time
If the ceiling is tight below, how is the heat from the first floor going to get to the hole? If you Could reach the ceiling with smoke, heat and flame in your face and cut a big enough hole through all the insulation, plaster and lath, what if the hole is in a room with the door closed? What if there are gable end vents and soffit vents and a lot of leaks in the attic? Won't the hole draw air in through those before it miraculously draws the heat from the first floor? If the flames going through the hole in the roof are releaving pressure and heat and turning the house into a chimney, why is smoke Still coming out of every orifice in the roof in Every video I watch? While they are doing all this, I broke out the fire room window to vent the flames and smoke directly to the outside and extinguished the burning material. Food for thought! THINK don't follow!
This a rare time I actually agree with you. Vertical roof ventilation is not necessary at 95% of the fires we fight. I've been on too many roofs unnecessarily with very little benefit to the conditions inside. It's a slow time consuming, resource stealing task, that has a place on the fire ground, but limited at this point. Attic fire or balloon frame construction, otherwise use the crews to horizontally ventilate but methodically and with a purpose. Your advice to "think not follow" is not wise though. The professional fire service has a command structure that MUST be followed. Change the tactics at the command level so it can trickle down to the firefighter level without freelancing.
Can I suggest an edit? “You” didn’t break the window out and extinguish the flames. Because you’re an obsessive compulsive old man with nothing better to do than watch every fire video on TH-cam
@@FreeMongooose Great contribution. When faced with an opportunity to explain why you disagree you opted to lob weak insults instead. He at least articulated his stance.
Liam Hilt you haven’t seen a lot of JB I’m assuming. He’s in the comments section of almost every fire video on YouTub, aggressively berating any fire departments’ tactics that aren’t exterior fire attack. It doesn’t matter what perspectives you give or what you explain, he will come back and call you a sheep or a child. More articulate people than myself have tried, with the same result. He’s not a firefighter, not even a retired one. He’s a constant, poisonous presence in the comments section and has been for years. So now I don’t bother “debating” with him, I’ve heard everything he has to say and it’s nonsense. I move to more entertaining measures right off the bat now.
![[LIVE] : ONE ลุมพินี 88 | คู่เอก "ป้อมเพชร vs อัสลามจอน"](http://i.ytimg.com/vi/1ZqTVVbMgbo/mqdefault.jpg)
Good video. I was a former volunteer firefighter and I was a certified firefighter 2 and we did those types of training. We done three realistic vertical ventilations during a real fire during my 5 years of service with my Dept. It sure is important to do vertical ventilation it works. It should only be done with safety in mind. It looks easy but wearing all that gear makes it hard so practice while wearing the SCBA is important. All firefighters need to be aware of the the two firefighters on top of roof. I took a college course and became certified before I was able to do interior firefighting. So training videos are important. We had weekly training. Knowledge of firefighting techniques are essential in structural firefighting. Also you have to wear SCBA while doing the ventilation. Department store roofs are dangerous they cave in quickly. So don't risk going on top of a building like Walmart.
Excellent Video Guys! I’ve been cutting roofs for nearly 23yrs now and that was a great demonstration
You don't engage the chain break when still in the cut. Full RPM's until out of the cut and then let the RPM's go down then engage chain break. You can make the chain jump off the bar if you engage the chain break when running full RPM's. In my opinion if you have to reset your footing then you engage the chain break other than that you don't have to engage the chain break every time. Just slows the operation down. Also as shown in cut one you never take your hands off the saw. You run full RPM's until out of cut bring RPM's down then roll your wrist downward to push on the chain break. Especially running high RPM's and you take a hand off the saw things can end badly especially if its a carbide big tooth k-12 with the feet. Very Dangerous. Train Like You Fight!
We teach that that your #1 and #3 cuts are reversed for us. We scribe across the roof to find the rafters on our 1st cut so when you roll the decking you roll a full span section. We also plunge the saw straight down until we hit a rafter, that was more of the chain hits the face of the beam and you can feel the rafter. When the saw is at a shallow angle its more likely you will cut through a good portion of the rafter and not feel it as its a lesser exposure to the chain.
Rolling the rafter towards you also helps shield you from that initial opening of the roof directing it away from you.
Nice vid, thanks for sharing
There are many ways to vent a ruf. This is an excellent and well demonstrated video on venting
It shows how to cut a hole not HOW VVing works. Heat rises has almost no value here. All you are doing is introducing a furnishing fire to a structural attic and Boom, you have your typical VV.
We just performed this drill. Cutting above the fire is ideal, otherwise the fire will "chase the opening" meaning you may have additional fire spread due to the vent hole. Also, make sure cuts and ladder are on the windward side close to the peak to take advantage of drafting.
How about break the window in the fire room and put water on the burning material from outside and the fire is out before they could set the ladder? Fast, Safe and with limited water use because you can see what is burning.
JB91710
So what if the fire is in the knee walls, collar tie and rafter bays, the firefighters have zero visibility and are baking in an oven, there’s a known victim in the half story who is also baking and has an unprotected airway, and every time you poke a hole in the knee wall to get water on the fire it blowtorches out of the knee wall and lights up the contents of the half story? Just break a window and wave a fog stream around right JB? We have so much to learn from you old man. You’re right. Time to hang up our ladders and saws.
@@JB91710 Depends if there is a Interior Attack Crew already inside. You Vent that Window and put a Stream into the Window, you just Changed Flow Path and the fire is going right at the Interior Attack Crew. If an Emergency Evacuation is executed and the Attack Strategy has went defensive then yes but you Never put a Stream in a Window when there's an Interior Attack Crew working. If you put a stream in a window when there's an interior attack crew and if they survive there will most likely be some very pissed off people at you. Work as a team, you might be doing different operations but work as a team.
@@nickolasguile8734 You can get tank water on Visible Burning Material faster than you can get dressed and get the front door open. You Never go inside before extinguishing the visible fire. That's just common sense and logic. You protect the victims and entering firefighters by eliminating the threat.
@@FreeMongooose Could you have been more vague and disjointed? What if a meteor fell through the roof? Why don't you Try to lay out one single tactic or better yet a Job Description? Something that you can actually discuss. You didn't impress me but one person thinks you're swell.
Also A good idea to sound the roof before stepping on it
what’s the point of driving the halagan below the bottom cut?
A place to put one of your feet so you have a Square Balance rather than have both feet on the Roof Ladder or a foot just on the roof which both feet on the roof ladder displays you being unbalanced on the first and second cut and the start of the third and fourth cut and with your foot just on the roof if your foot goes through the roof and if your cutting in the correct area all those byproducts of combustion and heat are going right up your leg and so on which is very bad. Whereas using the haligan your weight is on the ads, pik end the 1/2 hole the pik makes rather than the roof structure itself. Better to be safe than sorry
How do you get the ladder up too the roof top? Like, put another ladder on the side of the house, climb it, then have someone else hand the hook ladder up too you? And whats the point of cut #2?
It’s an inspection hole, made to see there is a lot of smoke and heat coming out of that area. Thats the purpose of cut #2
@@killercasey003 Made this comment two years ago lol. Was just cutting one a couple weeks ago :)
@ sweet man I just figured id type it anyway. I really didn’t think you’d reply 🤣
Don’t lock chain why cutting
I teach to cut away from the ladder.
Cutting way too deep... trusses are your support. Why cut away your "life". Should be a 1 to 1/2 inch of the saw top portion of the tip...
They are rolling over the rafters... Not cutting through them.
You rolled 2 rafters, if this was on a real roof with shingles you’d be screwed. You just wasted your time.
And always use the SCBA :)
yup my dad almost died in a roof collapse but wasnt wearing his scba and sucked in a bunch of smoke he made it off the roof fine and gor on the ladder in time
Practice it good. However your instructioners. Should be way more into the game. It’s not that easy
If the ceiling is tight below, how is the heat from the first floor going to get to the hole?
If you Could reach the ceiling with smoke, heat and flame in your face and cut a big enough hole through all the insulation, plaster and lath, what if the hole is in a room with the door closed?
What if there are gable end vents and soffit vents and a lot of leaks in the attic? Won't the hole draw air in through those before it miraculously draws the heat from the first floor?
If the flames going through the hole in the roof are releaving pressure and heat and turning the house into a chimney, why is smoke Still coming out of every orifice in the roof in Every video I watch?
While they are doing all this, I broke out the fire room window to vent the flames and smoke directly to the outside and extinguished the burning material. Food for thought! THINK don't follow!
This a rare time I actually agree with you. Vertical roof ventilation is not necessary at 95% of the fires we fight. I've been on too many roofs unnecessarily with very little benefit to the conditions inside. It's a slow time consuming, resource stealing task, that has a place on the fire ground, but limited at this point. Attic fire or balloon frame construction, otherwise use the crews to horizontally ventilate but methodically and with a purpose. Your advice to "think not follow" is not wise though. The professional fire service has a command structure that MUST be followed. Change the tactics at the command level so it can trickle down to the firefighter level without freelancing.
Can I suggest an edit? “You” didn’t break the window out and extinguish the flames. Because you’re an obsessive compulsive old man with nothing better to do than watch every fire video on TH-cam
@@FreeMongooose Great contribution. When faced with an opportunity to explain why you disagree you opted to lob weak insults instead. He at least articulated his stance.
Liam Hilt you haven’t seen a lot of JB I’m assuming. He’s in the comments section of almost every fire video on YouTub, aggressively berating any fire departments’ tactics that aren’t exterior fire attack. It doesn’t matter what perspectives you give or what you explain, he will come back and call you a sheep or a child. More articulate people than myself have tried, with the same result. He’s not a firefighter, not even a retired one. He’s a constant, poisonous presence in the comments section and has been for years. So now I don’t bother “debating” with him, I’ve heard everything he has to say and it’s nonsense. I move to more entertaining measures right off the bat now.
@@FreeMongooose no I can't say I have seen him before. I guess you never know.