Hose Loads and Handline Function Quiz

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Questions and Answers

What is a key advantage of the triple fold hose load?

Easier to manage on your shoulder

Deploys quicker than modified minuteman loads (correct)

More versatile around obstacles

Can reach further distances

Which disadvantage is associated with the modified minuteman 50' bundle?

May not reach the objective sufficiently (correct)

Deploys quicker than the triple fold

Can be difficult to manage on a shoulder

Not as effective at splitting cars

What makes the modified minuteman 100' bundle easier to manage around obstacles?

More of the hose is on the firefighter's shoulder (correct)

It is taller than other loads

It deploys quicker than other loads

It has fewer moving parts

What is one disadvantage of the triple fold hose load?

Not as versatile around cars and fences Signup and view all the answers

Why might firefighters prefer the modified minuteman loads over the triple fold in certain situations?

They provide greater flexibility in tight spaces Signup and view all the answers

Why is it important for the nozzle to sit farther back than the midpoint coupling?

It allows easier securing of the bundle. Signup and view all the answers

What is the purpose of placing a loop in the stack of hose?

To help clear the hose bed. Signup and view all the answers

How much hose needs to be loaded for a 250' preconnect?

150’ Signup and view all the answers

What should be done with the coupling at the tail of the bundle?

Connect it to the coupling on the top of the dead stack. Signup and view all the answers

What position should the straps face when deploying the bundle?

Upward to simplify unstrapping. Signup and view all the answers

When building the pack, where should the straps be positioned?

Facing up to facilitate deployment. Signup and view all the answers

What does it indicate if the hose bed divider is set up for a single stack?

The 100’ bundle should be loaded on top. Signup and view all the answers

What is the recommended distance to walk when clearing the hose bed if the loop is placed 50’ in?

Closer to the pump discharge for quicker access. Signup and view all the answers

What is the purpose of placing a loop in the rear of the hose bundle at the midpoint?

To allow easy access to the midpoint when performing a back stretch. Signup and view all the answers

How should the coupling be positioned when loading the hose?

At the front of the bundle towards the nozzle. Signup and view all the answers

What should be done to ensure the coupling is correctly placed during loading?

Place an extra fold or dutchman if needed. Signup and view all the answers

What is a characteristic of the midpoint loop when loading the second section of the hose?

It can be anywhere along the length of the hose. Signup and view all the answers

During hose loading, what is the first step that crew members should take?

Fold the hose back and forth until reaching the midpoint of the first section. Signup and view all the answers

What should be used to mark the midpoint of the hose?

A permanent marker or tape. Signup and view all the answers

Why might the midpoint not fall exactly on the loop during loading?

All hoses are cut to varying lengths. Signup and view all the answers

What is the final step after placing the second loop during hose loading?

Continue loading the hose until the final coupling is reached. Signup and view all the answers

What is the advantage of deploying the working length in an 'Attack over Supply' orientation?

It helps reduce friction with the ground. Signup and view all the answers

When is operating with a 1 ¾” line typically advantageous?

In a compartmentalized environment. Signup and view all the answers

Why is it important for firefighters to ensure handlines are loaded properly?

To deploy them swiftly when needed. Signup and view all the answers

What must firefighters adjust in their approach when using larger diameter hoses?

Their operational mindset and methodical movement. Signup and view all the answers

What is the target flow rate cited for effective operation with a smaller line?

160 GPM Signup and view all the answers

What is a key characteristic of working with larger handlines in a commercial environment?

Need for careful and methodical movement. Signup and view all the answers

What should be avoided when using larger lines during deployment?

High operational tempo. Signup and view all the answers

What is the impact of raising the first 50’ of hose off the ground?

It facilitates easier hose advancement. Signup and view all the answers

What should firefighters do when taking wider nozzle angles?

Adjust their stance to combat reaction forces. Signup and view all the answers

What is the recommended nozzle pattern in a large commercial space?

A sweeping motion at ceiling level. Signup and view all the answers

What is the primary goal when sweeping the nozzle across the ceiling?

To cool the ceiling and expose void spaces. Signup and view all the answers

What needs to be ensured while attacking a fire with a hose team?

The fire must stay in front of them. Signup and view all the answers

Why do fires often fail to go out?

Insufficient water or lack of access to the fire. Signup and view all the answers

What should firefighters aim for to use water most efficiently?

Direct water at the fuel-flame interface. Signup and view all the answers

How do smoothbore nozzles help with fire suppression?

They deliver larger droplets that travel farther. Signup and view all the answers

What is a critical aspect of using larger water lines in firefighting?

They maintain interior attack capability. Signup and view all the answers

Study Notes

Hose Loads

There are three main hose loads.
- Triple Fold: Deploys quickly but not versatile around obstacles
- Modified Minuteman - 50' Bundle: Easy to manage on shoulder, can split cars, but may not reach objective and deploys slower
- Modified Minuteman - 100' Bundle: Versatile around obstacles, good for residential structures, easier to split cars, bundle may be difficult to manage on shoulder.

Handline Function

2" and 2 1/2" handlines are the largest in CFD's arsenal and should not be expected to be manipulated like 1 3/4" handlines.
When attacking with a 1 3/4" line, firefighters are able to work quickly because the fire environment is usually compartmentalized and 160 GPM provides sufficient protection.
Commercial fires require a more methodical approach due to the nature of potential fires, and firefighters should slow down and flow water early.

Attack Line Orientation

Having the nozzle and coupling at the point of service is crucial for any deployment.
"Attack over Supply" orientation raises 50' of hose off the ground, helping with advancement and reducing friction.
Firefighters should attempt to deploy inline with respect to the advance whenever possible.

Nozzle Pattern

In large commercial spaces, the ideal nozzle pattern is a sweeping motion at the ceiling level, rather than the typical O pattern.
Start high and sweep left to right, cooling the ceiling above the area firefighters will potentially be occupying next, displacing ceiling tiles, exposing void space, and cooling the roof structure.
Lower the stream angle incrementally with each sweep to win back the building.
Ensure fire stays in front of firefighters.

Reach and Penetration

The most efficient way to extinguish a fire is to get water on the material that is burning, not evaporate the water into steam.
Large droplets from smoothbore nozzles travel farther through the thermal column and resist vaporization, providing a better chance of impacting the fuel-flame interface.

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Description

Test your knowledge on the various hose loads such as Triple Fold and Modified Minuteman, and understand the crucial differences in handline functions. This quiz will also cover attack line orientation and its impact on firefighting efficiency. Perfect for those in fire service training!