How does a forward lay differ from a reverse lay in pump operations?

• A. A forward lay moves supply lines from the hydrant to the pump; a reverse lay moves lines from the pump to the hydrant or water source.
• B. A forward lay moves lines from the pump to the hydrant; a reverse lay moves lines from the hydrant to the pump
• C. A forward lay uses larger hose than a reverse lay
• D. A forward lay is slower than a reverse lay

Answer: (A)

Understanding forward lay versus reverse lay comes down to where the water supply hose is laid relative to the pump and the hydrant.

In a forward lay, you start at the hydrant and run the supply line from the hydrant toward the scene, so the pump can be supplied as it’s positioned near the incident. The water flow is hydrant → hose → pump. This setup is efficient when the hydrant is close to the incident and you want the pump to be fed directly from the hydrant as you set up.

In a reverse lay, you position the engine at the scene and lay the supply line back toward the hydrant or water source. The line goes from the pump to the hydrant, so the pump is set up first and water is brought back to it from the hydrant. This can be advantageous when the hydrant is a bit farther away or when traffic/scene safety makes running a line straight from hydrant to scene less practical.

The other choices focus on hose size or speed, which don’t define the difference between forward and reverse lays.