Re: [Tagging] fire_hydrant extensions proposal
In Italy diameters are measured in millimeters. I think that the international standard (outside UK and US) is millimeters, not centimeters. Here for underground and over ground hydrants most commons diameters are 45 mm and 70 mm. Flow capacity is measured in liters / minute but in Italy normally it isn't published on the signs. Pressure is measured in bar, it is the pressure of the local water network, and in Italy normally this isn't published on the signs too. Alberto - Viking81 ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] fire_hydrant extensions proposal
Richard, On 09.03.13 20:07, Richard Welty wrote: > i've started drafting a proposal for some tags to extend the fire_hydrant > tagging system. Please keep in mind, there already a rather big list of possible tags: http://wiki.openstreetmap.org/wiki/DE:Tag:emergency%3Dfire_hydrant (only in German) and what the OpenFireMap displays (the diameter): http://openfiremap.org/?zoom=17&lat=48.11435&lon=16.31743 > in the US, the American Water Works Association has a classification system > dividing > hydrants into 4 groups based on their flow capacity (e.g., class AA is output > greater > than 1,500 gallons per second.) is there any equivalent in other parts of the > world that > should be factored into the tagging scheme? See http://de.wikipedia.org/wiki/Hinweisschilder_zu_Stra%C3%9Feneinbauten (sorry, also German). Most important value (and shown on OpenFireMap in z17) is the nominal diameter, which classifies the hydrant. It is the inner diameter of the pipeline in millimeter and is typically 50, 80, 100, 150, 200, 250, 300, 400. HTH. /al ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] fire_hydrant extensions proposal
http://wiki.openstreetmap.org/wiki/OpenFireMap has many details, too. /al ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] fire_hydrant extensions proposal
2013/3/11 Andreas Labres : > See http://de.wikipedia.org/wiki/Hinweisschilder_zu_Stra%C3%9Feneinbauten > (sorry, also German). > > Most important value (and shown on OpenFireMap in z17) is the nominal > diameter, > which classifies the hydrant. It is the inner diameter of the pipeline in > millimeter and is typically 50, 80, 100, 150, 200, 250, 300, 400. Thanks Andreas, for posting this, especially the picture here can illustrate how this works in Germany (and probably other areas): http://commons.wikimedia.org/wiki/File:Hinweisschilder_für_Hydrant_Wasser_und_Gas_102_2002.jpg For those of you not fluent in German here a short description: The white one with the red border is the sign interesting here (underfloor hydrant for the fire department, 100 is the diameter in mm, 13,7 is the horizontal distance in meters, 3,4 is the orthogonal distance in meters, measured from the sign position, "MVV Energie" is the operator (supposedly)). The blue and yellow sign are similarly describing the positions of the water and gas valve access points. ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] fire_hydrant extensions proposal
On 3/11/13 7:25 AM, Andreas Labres wrote: Richard, On 09.03.13 20:07, Richard Welty wrote: i've started drafting a proposal for some tags to extend the fire_hydrant tagging system. Please keep in mind, there already a rather big list of possible tags: http://wiki.openstreetmap.org/wiki/DE:Tag:emergency%3Dfire_hydrant (only in German) and what the OpenFireMap displays (the diameter): http://openfiremap.org/?zoom=17&lat=48.11435&lon=16.31743 i don't propose to change those tags, only supplement with tags relevant for US usage and possibly expand the suite for other locales where the usage is different. the internal diameter of the hydrant is not the dimension in common use in the US. in the US, usage is not standardized but departments generally think in terms of one of these approaches: 1) American Water Works Association classes (AA, A, B, C). this is a simple coding system for flow capacity 2) flow capacity in Gallons per Second 3) water main diameter (not hydrant diameter) internal hydrant diameter isn't going to play in the US, nor is pressure in bar, hence the proposal for extending the tagging system. i would also note that in the UK, according to the docs i've reviewed, the diameter recorded on the hydrant signs is the main diameter, not the internal hydrant diameter. richard ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] fire_hydrant extensions proposal
Am 11.03.2013 13:29, schrieb Richard Welty: On 3/11/13 7:25 AM, Andreas Labres wrote: Please keep in mind, there already a rather big list of possible tags: http://wiki.openstreetmap.org/wiki/DE:Tag:emergency%3Dfire_hydrant (only in German) and what the OpenFireMap displays (the diameter): http://openfiremap.org/?zoom=17&lat=48.11435&lon=16.31743 3) water main diameter (not hydrant diameter) internal hydrant diameter isn't going to play in the US, nor is pressure in bar, hence the proposal for extending the tagging system. fire_hydrant:main_diameter is the same as fire_hydrant:diameter - at least in the current tagging usage and 'mappers meaning'. fire_hydrant:diameter is used for the _main_ _pipeline_ diameter, where the hydrant is fed from - as this is indicating the possible value of the water supply. (In theory the pressure is normalized ... in practice, well ...) Sure, this is a bit misleading ... it was developed from a german point of view regarding the signs and a short-as-possible key ... The hydrant pipe inner diameter is not tagged yet - afaik. In Germany the interfaces are standardized anyway - and the (underground) standpipe diameter may possibly vary (50, 80, 100), as it is a movable part from the fire brigade. Regards Georg ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] fire_hydrant extensions proposal
On 3/11/13 10:01 AM, Georg Feddern wrote: fire_hydrant:main_diameter is the same as fire_hydrant:diameter - at least in the current tagging usage and 'mappers meaning'. fire_hydrant:diameter is used for the _main_ _pipeline_ diameter, where the hydrant is fed from - as this is indicating the possible value of the water supply. (In theory the pressure is normalized ... in practice, well ...) Sure, this is a bit misleading ... it was developed from a german point of view regarding the signs and a short-as-possible key ... does anyone mind if i clarify this point in the wiki? i'll remove the fire_hydrant:main_diameter from my proposal; it's only in there because the current meaning of fire_hydrant:diameter was unclear. richard ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
