FDNY Reading Cycle 1

The 1 ¾” hand line is the primary attack line used at structural fires. This hose when used in conjunction with the 15/16” main stream tip and controlling nozzle, provides an adequate fire stream and has better maneuverability and easier handling than the larger 2 ½” hand line. At a nozzle pressure of 50 PSI, the 1 ¾” hand line will flow approximately _____ GPM.

• 80

• 150

• 180

• 210

2 ½” hose is the most versatile type of hose in the FDNY. What is true about 2 ½” hose?

• It can be used as an attack line at a fire only.

• It can be used as a supply line in a number of situations.

• The coupling size is 2”.

• The friction lose in each 50-foot length of 2 ½” hose is 10 psi.

• Operating pressure is normally limited to 200 psi.

When using a standpipe system in residential building fires a _____ light weight lead length should be used.

• 2"

• 2-1/2"

• 1-3/4"

2 ½” polyurethane-lined lightweight hose is colored _____ with _____ stripes.

• Green, Red

• Red, Green

• White, Red

• Red, White

Each size hose has different coupling sizes and friction losses. Both the 2 ½" rubber lined hose and 2 ½" light weight hose has 5 psi friction loss and 2 ½" couplings. For and 1 ¾" the friction loss is ___ psi with ___ couplings.

• 15 psi, 1 ½"

• 10 psi, 2"

• 15 psi, 2"

• 10 psi, 1 ½"

• 20 psi, 1 ¼"

Operating pressure for 1 ¾", 2" light weight, 2 ½" rubber lined, 2 ½" light weight, and 3 ½" hose are normally limited to ___ psi.

• 150

• 200

• 250

• 300

An 1 ¾" nozzle is used with the 1 ¾" hose with 15/16" MST. The required nozzle pressure is 50 psi at the tip. What is the required nozzle pressure for a 2" nozzle with 2" light weight hose?

• 40 psi

• 50 psi

• 55 psi

• 60 psi

The 2 ½" nozzle should be marked with a ___ around the MST.

• Red stripe

• White stripe

• Green stripe

• Yellow stripe

Fog nozzles can produce either a straight stream or a fog pattern. The straight stream is hollow. The fog pattern is adjusted by rotating the outer barrel and the reach of the stream depends on the width of the pattern: when the fog pattern is ___, the reach of the pattern will become ___.

• Wider, Longer

• Narrower, Shorter

• Wider, Shorter

The required nozzle pressure for an 1 ¾" fog nozzle is ___ psi with a flowrate of 200 GPM, while the required nozzle pressure for a 2 ½" fog nozzle is ___ psi with a flowrate of 250 GPM.

• 100, 125

• 125, 150

• 100, 100

• 100, 150