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Hose Lays for Water Supply

There are 3 basic hose lays for water supply, the forward hose lay, the reverse lose lay, and the split hose lay. The appropriate hose lay is determined by the Company Officer and is based on the location of the water source in relation to the fire. Other factors that must be considered include; the available water flow from the water source, direction of travel, length of the hose lay, and access of apparatus.

Key Operational Points of Water Supply

  1. Large diameter supply hose can block access to subsequent arriving apparatus.
  2. Narrow streets and driveways may necessitate that the supply line be laid by the second or third due to allow access of additional engines and trucks to the fire scene.
  3. On wider streets, care should be taken to lay the line on one side of the street to allow access for subsequent arriving apparatus.
  4. Low volume water sources, and long supply hose lays should have a engine positioned at the source to supplement pressure and volume by pumping through the appliance.

“MAKING THE HYDRANT”                        


This terms refers to the operations of the firefighter connecting a supply line to a hydrant during a forward hose lay. There are 4 variations of this operation.

  1. Four inch hose with appliance to a 4 ½ inch outlet hydrant. Lesson Plan
  2. Four inch hose with appliance to a 2 ½ inch outlet hydrant. Lesson Plan
  3. Four inch hose with appliance to a 2 ½ inch wharf hydrant. Lesson Plan
  4. 2 ½ inch hose to any hydrant. Lesson Plan
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