What metric unit conventions are used in fire protection?
We will now define the most commonly used units for each measurement worldwide, the Metric System.
Note that sometimes, the unit in the Imperial System and the Metric System is the same. This is the case, for example, for the current or voltage of an electric drive, expressed in amperes and volts.
There is a slight difference between the commonly used units in the metric system and the International System, as most of the time, commonly used units are derived from the SI units for clarity and playing with not too big or not too small numbers.
For example, as the SI unit for distance is meter, a bit more than 3 ft, it is difficult to express the size of a sprinkler thread in meter, and then, millimeter, representing 1/1000 meter, is generally used.
For most generic measurements
For fire pumps and water supplies
For water supplies
For sprinkler systems
For fire alarm systems
For gas protection systems
For smoke control and performance-based designs
An important note here is that in Europe, for example, the preference for the exact unit that is being used will differ from one country to another.
For countries leaving the Imperial System to the metric system, such as Canada, they tend to be as close as possible to the coherent SI units, using liters per second for flow, for example.
That is a quick introduction to the unit conventions used as part of the metric system worldwide.
For Franck Orset, I’m Jeff Kelm, this is MeyerFire University.
Sentry Page Protection