[Tagging] surface = chip seal vs surface = asphalt

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Sat Jan 23 18:32:00 UTC 2021

> Date: Sat, 23 Jan 2021 17:53:53 +0000 (UTC)
> From: Peter Neale <nealepb at yahoo.co.uk>
> To: "tagging at openstreetmap.org" <tagging at openstreetmap.org>,
> 	"80hnhtv4agou at bk.ru" <80hnhtv4agou at bk.ru>
> Subject: Re: [Tagging] surface = chip seal vs surface = asphalt
> In the UK, the lay person (i.e. not a civil engineer) would understand "concrete" to mean "portland cement and aggregate".  They would understand "asphalt" to be black, tarry stuff with stones in and they would not understand "asphalt concrete" at all.
> I THINK Chipseal is what we would call "tar and chippings"; a cheap way to resurface a road, which you have to drive over slowly for the first few days / weeks, until the chips are all fixed in the tar, or swept up as surplus.  IMHO the finished surface is not really that different from asphalt, but then I am not a road surface aficionado.
> Regards,Peter
>      On Saturday, 23 January 2021, 17:34:46 GMT, 80hnhtv4agou--- via Tagging <tagging at openstreetmap.org> wrote:
> In the united states people do not use the word concrete,  The terms “asphalt concrete”, “bituminous asphalt concrete” and the abbreviation “AC” are typically used only in engineering and construction documents and technical literature where the definition of “concrete” is any composite material composed of mineral aggregate glued together with a binder, whether that binder is Portland cement, asphalt or even epoxy. To the layperson Asphalt Concrete pavements is most often called just “asphalt“. https://dpw.lacounty.gov/gmed/lacroads/TreatmentChipSeal.aspx https://copavementsolutions.com/chip-seal-vs-asphalt/
> Saturday, January 23, 2021 10:51 AM -06:00 from Mateusz Konieczny via Talk-us <talk-us at openstreetmap.org>:
>   I was helping a newbie mapper from US (on Discord) and discoveredhttps://en.wikipedia.org/wiki/Chipsealhttps://wiki.openstreetmap.org/wiki/Tag:surface%3Dchipseal https://wiki.openstreetmap.org/w/index.php?title=Tag:surface%3Dchipseal&oldid=1388275(how surface=chipseal looked until today)Is it something considered as substantially different from regular asphalt concrete?Is surface=chipseal valid value or pointless duplicate of surface=asphalt?Is it something that should be eliminated or used more widely?Should it be documented at https://wiki.openstreetmap.org/wiki/Key:surfaceor considered as deprecated?Asking on talk-us first as it appears to be common especially in rural USA.

As someone who used to inspect road construction for 14 years in the US, 
I would say that chipseal is definitely NOT the same thing as asphalt, 
just as the Wikipedia article states, and I think it should be added as 
an additional value in the wiki for the surface tag.


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