2 1/2'' Flashcards
Hose Lengths?
50’
Hose construction?
Rubber lined with synthetic double jacket, most outer jackets are made of synthetic weave
Coupling construction?
aluminum alloy
Weight of water within a 50’ section of 2 1/2” hose?
106lbs
Pros of a smooth bore?
- greater penetrating power
- no clogging with debris
- no mistaking stream
- multiple tip size
Reach of the smooth bore and what does it allow the firefighter to do with that reach?
60-70’ and work outside the collapse zone
How many GPM’s can the smooth bore flow?
At least 200gpm
When should a 2 1/2” hose line be used?
Advanced fire conditions
What does an advanced fire condition often preclude?
immediate entry into the fire building
What is often used with a 2 1/2 hand line to control large fires and keep exposure buildings cool?
Master streams
What are the two most common of hose loads for the 2 1/2” in MDFR?
2 ½ Hose Load
Aerial Transverse Compartment
What is another name for “2 ½ Hose Load”
Cardeso load
For the 2 ½ Hose Load, how long should the female coupling be hanging out of the end and should it be pre-connected?
6-12 inches and NO
What do you make after each and ever coupling is loaded on the 2 ½ Hose Load?
A loop big enough to fit a gloved hand
After the hose is loaded in the 2 ½ Hose Load configuration, what should you have approximately every 50’?
A loop
When does the nozzle get attached to the hose and where should it be on the 2 ½ Hose Load configuration?
Attach the nozzle after completely loading the hose and it should be on top of the load.
What is the first 50’ of hose that is attached to the nozzle called?
The working end
Transverse compartment can hold how much hose?
200-250’
What will the first 50’ of the hose have and where will the nozzle be placed?
Clipped with straps and the nozzle will be on top
Can 2 1/2” hose be loaded wet?
No due to mildew
What type of hose is loaded for combat use?
Dry hose
After a quick knockdown from the outside, what can the 2 1/2” hose line be reduced to?
A 1 3/4” or a 2” hose line by unscrewing the nozzle tip
