4 2 a typical town main can be tested at a single hydrant using a suitable flow and pressure test instrument.
Water flow test report.
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.
The shutoff head is equal to the static pressure head at hydrant 1.
When the results are collected carefully formulas can be applied to figure the varying pressure that will be available when different amounts of w.
The design flow is the total flow from the test and the design head is equal to the residual pressure at hydrant 1.
The most common test involves measuring the flow of water flowing out of a municipal fire hydrant while recording how much the water pressure has dropped.
You will receive a report that includes the static and residual pressure of the main and the flow rate at each hydrant.
The report will be emailed or faxed to the attention of the person on the request letter.
4 3 larger mains of higher capacity will require the simultaneous testing of several hydrants.
An alternative approach is to ask your county health department.
The shutoff flow will always be 0 gpm.
During the course of the test the water flow should be monitored and re measured every 15 minutes to make sure that a constant flow rate is maintained.
In order to use the flow test results in a water model you must create a 3 point pump curve.
Interpret your water test results many well owners need help understanding water test results.
A home inspector will sometimes run the water flow test while performing the home inspection.