The Hose Stretch: Mid-Rise Apartment Fire Tactics

The anatomy of the hose stretch, is a critical topic that Jay Bonnifield brings to the forefont.  Bonnifield builds his entire framework around a single organizing principle: protect the ways. The ways are the stairways, hallways, breezeways, and access corridors. They are every path of travel that occupants use to move through and exit the building. In a mid-rise apartment fire, those are also the same paths the fire will use to extend once it leaves the unit of origin, and the same paths engine companies need to move hose, crews, and searches through the floors above. If crews control the ways, they control the building. If the fire gets into the ways before lines are in place, the situation becomes exponentially harder to reverse.

From that principle, Bonnifield derives rules of thumb for line placement that give company officers a decision framework rather than a principle to interpret on the fly. The first interior line goes to the lowest fire floor. It does not go above it and does not go to a floor that appears to offer a better tactical angle. It goes to the origin. No more than two lines should operate in the same stairwell at any point, because a third line in the same shaft creates operational problems for every crew above and below it. And the attic space earns the same protection priority as the hallways. A fire that reaches a large common attic can move across the entire top of the building without restriction, converting a manageable unit fire into a structure-threatening event that displaces dozens of families. Keeping fire out of the attic is as tactically important as keeping it out of the hall.

To show how quickly the math compounds, Bonnifield walks through a four-story garden-style building with fire on the third floor extending to the fourth floor and the attic. Engine 1 places a line to floor three. A second unit stretches to the floor four exposure in the same stairwell. That stairwell is now at capacity, and a third line there compromises the first two. So a third and likely a fourth line are needed to top-floor lateral exposure units, and possibly a line to a third-floor exposure as well. Another engine company may need to open a second stairwell entirely. This is not an especially large building and not an especially complex fire, but the line requirements escalate fast. An engine company that arrived thinking one preconnect was the answer is already behind before the second alarm is struck.

A Hierarchy of Hose Stretch Methods, Not a Menu of Options

One of the most useful contributions in the article is how Bonnifield presents the five stretch methods available to engine companies. He does not offer them as equivalent options to pick from based on preference. He presents them as a hierarchy ordered by building type, available staffing, and what is already committed on the fireground. Each method has a legitimate role and each is best suited to a specific situation. Understanding the hierarchy means arriving on scene with an intent, not a guess.

The well hole stretch is Plan A when the building has one. A well hole cuts the hose calculation from approximately 50 feet per floor to 10 or 15 feet, radically shortening the stretch and simplifying the operation. The line goes up through the open center of the stairwell, shouldered, hoisted with a rope, or dropped from a coupling above, rather than snaking around every tread. It is fast, it keeps the stairwell less cluttered for crews and evacuating occupants, and it gets water moving in less time. Its one significant limitation is duplication. Running a second line through the same well hole risks wrapping around the first, which is why the second line typically takes a different method.

Running the treads, meaning laying the line along the stair treads as crews ascend, is the most common alternative when no well hole is available or when a second line needs to follow a different path than the first. It requires more hose per floor, roughly 50 feet versus 10 or 15, which is why it typically sits second in the hierarchy, but it is reliable and works in almost any stairwell configuration. The coupling drop from an elevated point, which involves dropping a hose bundle from a stairway landing, exterior walkway, or balcony straight down to the floor below, becomes Plan B in buildings where the exterior geometry permits it. It is one of the fastest methods available for placing confinement lines and keeps the stairwell free of additional hose.

Rope stretches bring a full working length of hose directly to the fire floor by hoisting it up from below, bypassing the stairs entirely. This is especially valuable in larger interior hallway buildings where stairwells become congested as successive lines are committed. Ground ladder stretches round out the five, entering the building through windows or balconies adjacent to the fire floor. Bonnifield is deliberate about their role in the hierarchy. They are Plan C for confinement lines, not Plan A for the initial attack. Taking the first line through a window leaves the common stairwells and hallways unprotected and can strand crews in a tight space needing to reposition at exactly the moment conditions change. The first line must be anchored to an exit. Window entries earn their place when the primary line is already working in the stairwell and additional coverage is needed for areas the stairs cannot efficiently reach.

Running the Treads: Two Refinements Worth Training

Within the tread stretch, the most commonly used method in mid-rise apartment firefighting, Bonnifield proposes two specific refinements to the way most engine companies were originally trained. Both are grounded in what actually happens in a stairwell during a working fire, and both address failure modes that conventional technique consistently produces.

The first is taking the inside track. Conventional teaching places the hose along the outside of the stairwell, the wider path with more room to flake. But a stairwell during a working apartment fire is not an orderly space. Occupants are evacuating from every floor, pushing open stairwell doors as they descend, often directly over an uncharged line lying flaked along the outside edge. A door swinging open over an uncharged hoseline at the moment of charging creates a serious problem. Running the inside track keeps the hose away from every door that swings into the stairwell on the ascent, protects the line from occupants who cannot see it in smoke-filled conditions, and eliminates the wasted hose that causes lines to come up short. Once a second line is committed to the outside track, which is now usable because the first line is out of the way, crews can read hose consumption across both lines and calibrate their stretch calculations accurately.

The second refinement is the supply-side lead out. Standard practice has the nozzle firefighter leading up the stairs while the crew follows behind with hose on their shoulders, paying it off as they climb. The problem is that no one in the line can see the section of hose behind them. False snags at corners, hose sneaking through partially open doors, and a coupling hung up on a railing all create the impression that the line is tight when it is actually just obstructed, causing firefighters to dump hose they should be holding. Bonnifield’s solution is to have the last firefighter, the one at the supply end, take the lead up the inside track, with the rest of the crew following in sequence. Now every person in the line has someone watching their shoulder, tending their section, and keeping hose out of unwanted places. When a firefighter has paid off everything on their shoulder, they either move ahead to assist or fall in where needed. The result is a cleaner, more controlled placement on both vertical and horizontal stretches, with less wasted hose, fewer snags, and better coverage of the intended path.

The Hose Stretch Problem Is Also an Air Problem

The Firefighter Air Coalition included Bonnifield’s article in the 2026 FDIC Supplement because the stretch problem and the air problem are the same problem. The buildings that produce the hose stretch challenges Bonnifield describes are the buildings where air management becomes most consequential. Climbing stairs in full PPE with a load of hose is among the highest oxygen-demand tasks a firefighter performs on the fireground. Research from the Illinois Fire Service Institute places stair climbing at 8.1 METs, near the top of recorded fireground oxygen consumption. Heart rates are pushing toward 180 beats per minute before the first door on the fire floor is even touched.

When a crew is working to place a second or third confinement line, climbing stairs, shouldering hose, forcing doors, and managing the line under pressure, they are doing so on the same cylinder that started on the apparatus floor. The efficiency of the stretch matters not just tactically but physiologically. A clean well-hole stretch that takes three minutes is a fundamentally different air budget than a tangled tread stretch that takes nine. The fireground that demands multiple lines placed in rapid succession is simultaneously consuming crew air at rates that compress the working window for everyone committed inside. Getting the stretch right is not only about where the water goes. It is about how much air supply the crew has left when they get to the door.

Why Firefighter Air Included this Topic in the FDIC 2026 Supplement

The mid-rise apartment fire is not an edge case. It is the operational reality for increasing numbers of departments across the country, increasingly often, in buildings that did not exist five years ago. The building stock has changed faster than training programs have adapted. Bonnifield’s article closes that gap with something specific and teachable: a hierarchy that gives company officers a decision framework for line placement, not just a principle they have to interpret under pressure in a stairwell filling with smoke. Know your building type. Know your line placement order. Know which stretch method fits the building in front of you today, and which ones you will need for the second and third lines that have to follow.

Read the Full Article

“Anatomy of a Stretch” by Jay Bonnifield is published in Fire in the Sky, created by Firefighter Air for the Fire Engineering 2026 FDIC Supplement. Read it in full at https://www.fireengineering.com/firefighting/anatomy-of-a-hose-stretch/ and bring it back to your crew. For more on firefighter air safety and the physiology of fireground exertion, visit aircoalition.org.

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