NYCEMT86
Graduate Poster
- Joined
- Jul 14, 2007
- Messages
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Don't you remember that Chief Palmer got to the impact floor #78 in WTC2 ? . Remember when he radiod back, panting from the effort of climbing to the 78th. '' There are only a few isolated pockets of fire '' he said...'' we can knock them down with two lines ''
It sounds like the short lived jet fuel fires had already gone out by the time he got there as you would expect. (Jet fuel burns off very quickly as we all know especially when it has been atomised).
So the question is when he said 'Two Lines ' did he mean just two hoses ?
Because Jet fuel was the only combustible in WTC....
Only if somebody on this forum with firefighting experience went into detail into what exactly "two lines" means based on FDNY high rise operations...
oh that's right...somebody did...wait even better that somebody was me
Part of my paper, figured you guys might like this.
"Chief Palmer reports on the 78th floor numerous 10-45 Code Ones, we've got isolated pockets of fire, we're gonna need at least two hand lines up there"
As most you know that the bulk of the fire was above the 78th floor and I won't get into much detail about that, Rather I am going to get into the stand pipe operations and why only two hand lines would have been needed to knock down the fire the 78th floor.
Most conspiracy theorists think two lines sounds like a small amount and therefore the fire was small right? Well not necessarily, two 2 1/2 inch hoses with 1 1/8th inch smooth bore nozzles can deliver more water at greater pressure than compared to the 1 1/2 inch unlined hoses that would have been stored on site, which anybody in the fire services knows, is usually crap since they don't meet the same requirements as hoses used by the fire department. As basic SOP during a high rise, they would have opened the gravity tanks located above them and turned on the fire pumps (which most likely would have been automatic) in addition to hooking two engines into an exterior outlet to add more pressure in the pipe, 650 psi to be exact. The nozzle pressure would have been reduced to 80-70 psi either by a PRD (Pressure Regulating Device) or at the stand pipe valve. Also the second line would have been hooked up at least two floors below the first line as not to interfere with residual pressure. So what does this all mean? Well if the stand pipe systems were still intact and operational they would have been able to deliver over 338 GPM (Gallons per minute)
GPM = (29.7)(d)^2(NP)
GPM = Gallons Per Minute
29.7 = Constant
d = Diameter in inches
NP = Nozzle Pressure
(29.7)(1.125)^2(80)(Use 81 for Square Root Purposes)
(29.7)(1.265)(9)
(37.5705, Rounded down to 37.57)(9)
GPM = 338
and at a weight of 8.33 pounds per gallon you are talking about over a ton of water with just one line alone. Now if you double that you are looking at over 2.5 tons of water.
Please if you have anything to add or correct go ahead
ETA:
ElMondoHummus you beat me to it!
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