[Tagging] How to tag earth walls in a shooting ramge

[Paul Allen]

On Wed, 20 Nov 2019 at 13:40, Martin Koppenhoefer <dieterdreist at gmail.com>
wrote:

> Am Mi., 20. Nov. 2019 um 14:12 Uhr schrieb Paul Allen <pla16021 at gmail.com
> >:
>
>> Note also that, in civil engineering, retaining walls made of earth are a
>> thing.  See
>> this video explaining mechanically stabilized earth walls:
>> https://www.youtube.com/watch?v=0olpSN6_TCc
>>
>>
> these are retaining walls, the whole filling is reinforced.
>

Yes, they're retaining walls.  But, since they're made of earth (often
visibly so), may be
naively mapped as embankments by some.  A civil engineer may be able to
infer, from
the angle of repose, that they are reinforced but that is not obvious to a
casual observer
since the reinforcement is not visible.  Also, even though they're
retaining walls, it may
be that what they're retaining is more earth, making them look even more
like
embankments.

I wouldn't want anyone to think, because of this discussion, that "made of
earth" =
"embankment."   However, many embankments (especially modern ones) may have
steep angles of repose because reinforcing them means less material is
needed
and makes them cheaper.  The line is blurred.  In the end, it comes down to
why
the thing was built.

-- 
Paul
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