photo.jpg

## Anchoring a Master Stream Against the Nozzle In New York City, tests were conducted on the upper floors of a high-rise building under construction on the west side of Manhattan. Units of the FDNY's 9th Battalion conducted a number of tests of various portable monitors, supplied by a pumper in th...

## Anchoring a Master Stream Against the Nozzle In New York City, tests were conducted on the upper floors of a high-rise building under construction on the west side of Manhattan. Units of the FDNY's 9th Battalion conducted a number of tests of various portable monitors, supplied by a pumper in the street more than 20 floors below. The test was aimed at demonstrating the feasibility of supplying such devices from a single standpipe riser and to verify the flows and pressures available using a variety of hose lays. All tests began with three lengths of hose, stretched from the standpipe outlet on the floor below the nozzle, following standard department policy. It was very evident that while a single 2 ½-in line supplying a portable monitor delivers greater volume and reach than a 2 ½-in. handline, these devices are best supplied by two 2 ½-in. or larger lines. That means the second line will likely have to be stretched from the outlet two floors below the fire. In this test, that meant four lengths of hose. The advantage of using 2 ½-in. hose is quite clear. It permitted flows of up to 750 gpm to A reaction can be done using hooks to span a door opening.