I think the road bed is compacted and built up to provide a crown so water runs off but the gravel itself is not compacted on the surface.
So putting some numbers in here... there are only 5,700 surface=compacted ways in the US. On the other hand, there are 107,000 surface=gravel. And I am willing to bet a fair sum that 99% of those do not follow the wiki definition of 4-8cm rocks. Soo yeah... does anyone want to update the wiki? :) Toby On Thu, Apr 19, 2018 at 10:04 AM, Richard Fairhurst <rich...@systemed.net> wrote: > Jack Burke wrote: >> Keep in mind that OSM apparently uses "compacted" to refer to >> macadamized roads, which is a specific process for building roads. > > surface=compacted in OSM, following British English usage, is traditionally > as described on pages 18-20 of this document: > > https://www.sustrans.org.uk/sites/default/files/images/files/migrated-pdfs/Technical%20Note%208%20-%20Path%20surfaces(1).pdf > > "Self-binding gravel paths are versions of the standard limestone dust > surface... The material is spread and levelled using a paving machine whilst > damp/moist and then compacted using a roller or vibrating plate. The > material 'sets' when dry, but not to the same extent as would a concrete or > bitmac. The surface remains loose-ish and dusty" > > From Toby's original posting, I'd describe the first image as > surface=gravel, since it doesn't appear to have been compacted with a > roller. The second is probably =fine_gravel, perhaps =compacted. I'd ignore > the wiki because the wiki, to borrow a phrase, sucks rocks. > > Richard > > > > -- > Sent from: http://gis.19327.n8.nabble.com/USA-f5284732.html > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-us _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
