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Request for water flow information n - San Francisco Fire ... 2025

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The document is a request form from the San Francisco Fire Department's Bureau of Fire Prevention for obtaining water flow information related to fire safety. It outlines the necessary details required for the request, including contact information, project specifics, and occupancy type. The form also specifies fees for processing and additional charges for field flow tests, along with a processing time of 7 to 14 business days.

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What is the flow of water for firefighting?

Fire flow is defined as the flow rate of a water supply, measured at 20 psi (137.9 kPa) residual pressure, that is available for the responding fire department for manual firefighting, typically this is water that is available at the surrounding fire hydrants, but it can be supplied with another approved source such as

How do you test the water flow for a fire sprinkler system?

A water flow test, also known as a hydrant flow test, is a way to measure the water supply available at a building site, usually for the purposes of installing a water based fire protection system (fire sprinkler system).

What is the water system for fire fighting?

Sprinkler fire systems work by using a water supply system that provides adequate pressure and flow rate to a water distribution piping system, to which sprinkler heads are connected. The sprinkler heads are installed in ceilings or side walls, and are designed to operate individually when exposed to heat.

What is the GPM flow of a fire hydrant?

Here is a list of what each fire hydrant color represents: Red indicates a water-flow capacity of less than 500 gpm. Orange indicates a water-flow capacity of 500 to 999 gpm. Green indicates a water-flow capacity of 1,000 to 1,499 gpm.

How do you calculate the flow of fire water?

NFF = (Length x Width)/3 Using Kimballs example, one floor is 50 by 100. The equation will be (50 x 100)/3 or 1700 gpm for one floor. The answer is rounded to the nearest 100. If all three floors are fully involved, you will need 5000 gallons per minute.

What is a fire flow report?

A fire flow test provides pressure and flow data at specific fire hydrants within the Districts distribution system. The data can be used to assess the pressure and flow available for fire protection, sprinkler system design, mainline design, and proper sizing of domestic and/or fire service lines.

What is the auxiliary water supply system in San Francisco?

The Auxiliary Water Supply System, more commonly known as the San Francisco Fire Department High Pressure System, is a system of mains and 1889 High Pressure Fire Hydrants, independent of the domestic water supply, built solely for the purpose of firefighting.

What is the water flow rate?

Your water flow rate, also known as your gallons per minute or GPM, is the measurement of how many gallons of water could potentially come out of your kitchen faucet or bathtub per minute. Your flow rate depends on a mix of factors, but the first thing is your household size.

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