The 58 Second Short ...
The video above it a throw back to a video lost just a few years ago but recently found thanks to iCloud. The video takes a deep dive into the positions for the first two engine companies, or first two companies to perform engine work on the fire ground at a fire needing a 2.5″ commercial fire flow. Watch and be amazed by the power of the 2.5″ line when matched with the 1 1/8″ tip. These engine companies are essentially performing fire attack and hydraulic truck company operations opening and exposing with every sweep of the nozzle across the drywall and drop ceiling.
Full Six Minute Video
Questions for you and the firehouse kitchen table crew.
- In your FD how many FF’s required to flow a 2.5″ Attack Line?
- How much does a 50 section of 2.5″ weigh when charged?
- How much can you flow through your 2.5″?
- Do you leave the 1″ tip on?
- Does your FD deploy 2.5″ on commercial building fires? WHY NOT?
- Does your FD use 2.5″ on fully involved garage fires?
- Why is this method above more effective than the coil?
2.5" vs 3.0" as Attack Line, is Bigger Better?
- 3.0″ is designed & intended as a supply line. Either rig to rig, hydrant to rig, or to supply a master stream device.
- Anything larger than a 2.5″ is just not a good idea as an Attack Line to move into a building.
- It’s nearly 30lbs more per 50′ section and much harder to bend.
- View the photos below where the firefighters hand has a nice grip on the yellow 2.5″, but not so much on the green 3″.
- The firefighter can easily pick up the yellow 2.5″ with one hand, but a very noticeable difference when grabbing the green 3″ with the same hand.
- Short video showing the difference.
- No need for debate, 2.5″ is for ATTACK! & 3″ is for SUPPLY!
How much do you want for that 2.50" ?
- We are not required to to force a door or cut a roof at every fire.
- There is a guarantee the fire needs water and enough of it to rapidly overcome the BTUs being produced.
- We need BIG APPLICATION and not prolonged duration of water application.
- But we must also completely understand the BIG 3 of FIRE STREAM & Attack Package SELECTION!!
- 1. Desired Amount Residential“2.5 GPS/150 GPM” or Commercial “5 GPS/300 GPM”
- 2. Desired Reach “Stream Reach”
- 3. Desired Nozzle Reaction/Combat Mobility “Nozzle Reach”
Water Application Rates Beyond the Moon
- NFA Fire Flow Formula is Length Times Width, Divided by 3.
- So in theory if you had 12,000 sq ft of fire that would be a Fire Flow need of 4,000 GPM. Let’s put that in perspective. That’s 16-2.5″ Attack Lines Flowing 250 GPM or 8 RAMS with 1. 3/8 tip flowing 500 GPM.
- Let’s up it 21,000 sq ft of fire. That’s a FIRE Flow need of 7,000 GPM or 28-2.5″ Flowing 250GPM or 14-RAMS FLOWING 500 GPM or 7 Ladder Pipes with 2″ TIPS at 80psi Flowing a 1,000 GPM each.
- Also remember from Chief Clarks book to equate 1 Firefighter for every 50 GPM FLOW. SOME FIRES ARE BIGGER THAN YOUR FIRE FLOW CAPABILITIES BEFORE YOU EVER GET THERE.
- This requires thought on focusing on Fire Spread Control over Fire Extinguishment in early phase of Fire Attack/Over all Fire Control.
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