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Dry Fire Hydrant Designs and Installations
Dry Fire Hydrant Designs and Installations

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Dry Fire Hydrant Design 08 - Bridge Assessment
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By President Mark Davis
April 27, 2017

We are often asked about our bridge-mounted dry fire hydrant designs. All of these installations first begin with an assessment of the bridge and the water flow underneath. Lift is the number one factor when we look at expected performance. When lift approaches 15-ft we begin to see a marked reduction in a pump's rated performance...so we tell folks to go and draft from the bridge using 6-inch hard suction hose and see what kind of flow is achieved. If that flow meets your needs, then a bridge-mounted dry fire hydrant will also work.

Watch our video clip for more information about the assessment process for bridge-mount installations.

Before this type of dry fire hydrant can be designed and installed, a thorough assessment of the bridge and stream must be completed.
Before this type of dry fire hydrant can be designed and installed, a thorough assessment of the bridge and stream must be completed.
What type of bridge wall or rail is used? Is there space for a pumper to draft? Is there a weight restriction?
What type of bridge wall or rail is used? Is there space for a pumper to draft? Is there a weight restriction?
 
What is the water flow like at different points of the year? What is the lift?
What is the water flow like at different points of the year? What is the lift?
What method of attachment will be used?
What method of attachment will be used?
 


 

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