[Tagging] surface=gravel problems

Martin Koppenhoefer dieterdreist at gmail.com
Tue Apr 27 20:12:05 UTC 2021

Am Di., 27. Apr. 2021 um 21:39 Uhr schrieb Bert -Araali- Van Opstal <
bert.araali.afritastic at gmail.com>:

> It depends. If you would like to define gravel or any variant in the
> surface tag what exactly are we referring to ?  If a road shows not
> embedded gravel in the top surface, so a part of the gravel can clearly be
> observed as "loose" gravel on the top ?  Then what you say makes sense, as
> true the largest main content define it's grade (grain size).   However
> it's difficult to define what extend or amount we should consider as
> "loose".
> Many roads have the gravel completely embedded, interlocked in the top
> layer, especially those using clay like top or sealing.  The purpose mainly
> making the surface more smooth, fill the voids with the clay.  The gravel
> might be a natural mixture, or a mixture where the grade doesn't matter
> that much.  It is added to provide more stability and prevent washing out.

not sure this would qualify for surface=gravel. Most roads have gravel in
some layer, but with "surface" we describe the surface of the road.

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