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Ohio County Schools Math4Life Profile: Wheeling Fire Fighter Robert Heldreth

Name: Robert Heldreth

High School: Wheeling Park High School

Occupation: Wheeling Fire Fighter and Emergency Medical Technician

There are many instances in the fire service when quick math is needed. Fire-flow calculations, nozzle pressures and calculating medication dosages are all important and life-saving operations.

Fire flow is calculated to determine the amount of water needed to extinguish a structure fire. Length multiplied by width of the building divided by 3 will equal the gallons per minute needed for extinguishment. Fog nozzles only operate properly at a designated pounds-per-square inch. We calculate nozzle pressure by determining the friction loss through the hose as the water makes its way to the nozzle. Medication doses are usually calculated by milligrams per kilogram. Wheeling Fire Department members use mathematics every day to keep residents of The Friendly City safe.

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