What Size Attack Line?

When do you stretch a 2.5″ over a 1.75″ attack line? Do you ever stretch a 2.5″ on a house? Do you ever take a 2.5″ in a house? Do you think two 1.75″ are better than one 2.5″? When do you think it’s a mistake to stretch a 2.5″? Are you one of those that’s worried about running out of water? How do you determine the 2.5″ over the 1.75″?

7 thoughts on “What Size Attack Line?

  1. I have 2 1/2 stretched based on occupancy type, building construction not particulary volume of fire. In this fire two 1 3/4 would be better than 1 2 1/2. This should be a 1 1 3/4 tank water fire here. It is a mistake to stretch 2 1/2 when you have not trained your crew to use ADULT lines. If you are not worrying about running out of water you are asking to be the next reason we line up in long lines and dress our best.

  2. As an Officer years ago my volunteer department at that time we used to discuss “the right size line” and “What size line do you pull (we ran 1 1/2 and 1 3/4.) I told them I don’t care what size you pull but what I don’t to see is a redline with a 1 1/2, then 1 3/4 then a 2 1/2 over all of it and a deckgun wetting them all down on a slab.

  3. Looks like a 1 3/4 fire. Being that most low pressure nozzle/hose combos are capable of flowing up to 300 gpm if pushed. It could be an easy 50ft 2.5 transition attack too if your crew is trained and ready for it. We had the same type of fire recently and the 2.5 transition & worked well with use of 1 3/4 in a close 2nd…Overwhelm the fire right?!

    • I completely agree that either tactic applied properly would be effective. It’s all on training. From the nozzle to the pump everyone on your crew better be on the same page. Hunker down and drive on.

  4. What about foam with any line. I prefer the fast attack with the 2.5 and mopping up with smaller lines.

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