[Talk-it] strade con corsie con diversa superficie

[Matteo Quatrida]

Scusate, ma mi dà un fastidio interiore avere due discussioni che si
intersecano.
Sposto quella sulle *piste ciclabili sui marciapiedi *in un altra e-mail,
così non facciamo confusione con due discorsi diversi.

Grazie per l'appunto Carlo, non si finisce mai d'imparare. Purtroppo
all'Università la pavimentazione stradale è stata trattata grossolanamente
e sono carente in materia.

Tratto da [1 <http://www.pavingexpert.com/setts01.htm>]:
TerminologyCubes and setts, cobbles and cobblestones. The terms seem to be
interchangeable, depending on your location. There's a whole range of
regional terms, too, such as "Cassies" or "Nidgers" in Scotland, and
"Belgian Block" in some strange places in southern England. The terms refer
to blocks of natural stone, hewn from a quarry, in a range of sizes and
rock types, and "cobbles" or "cobblestones" is also the name given to
large, rounded beach pebbles 200-400mm in size, which are sometimes called
'Duckstones'. These rounded 'cobbles<http://www.pavingexpert.com/cobble01.htm>'
are discussed on a separate page. The general public tend to refer to the
gritstone 'Hovis Loaf' type as Cobbles, although the correct term is
'Setts' - these range from 100x100mm to 200x250mm in size, and have an
average depth of 150-200mm.[image: sett dimensions]To be technically
precise (ie: according to BS EN 1342:2001), a sett is a dressed block of
stone having plan dimensions that are 50-300mm in length, and a thickness
of at least 50mm. The length and/or width should not usually be greater
than twice the thickness. However, some decorative setts for garden use may
be only 25mm or so thick and 100x100mm or even larger, in plan.

A cube has all three dimensions roughly equal.
[image: cubes]Cubes:
length ≈ width ≈ thicknessWhether they are cobbles, cubes, cassies or
setts, they are excellent paving products and will last for many, many
years; in fact, some of the stones currently covering the streets of
Britain have seen over 200 years of continual use.

Their pedigree as a paving unit goes back to the Romans, 2000 years ago,
and beyond, and they are characteristic of most of the so-called 'historic'
towns and cities of Britain and Ireland. They are fast becoming an
essential ingredient in the nostalgia business, as the fashionable
designers and developers fondly remember their long-lost days of childhood,
sitting on a kerb-stone, twirling sun-softened pitch onto lolly sticks in
the streets of post-war Britain.
[image: setts in manchester]
Setts at Castlefields, Manchester[image: cubes in chester]
Cubes in Chester[image: cobbles in durham]
Cobbles in Durham

 Sicché ad essere precisi avremmo:

*surface=cobblestone* per le pietre arrotondate da 200-400 mm di dimensione;

*surface=cube* per i bolognini e per i sampietrini (non credo possa essere
d'interesse distinguere la pietra usata, ma non si sa mai);

*surface=sett* per le pietre appiattite di forma parallelepipeda con
larghezza (L) = 50-300 mm; altezza (H) = 50-150 mm e lunghezza (W) = 50-300
mm < 2*H

Quindi l'uso che ho fatto io di *sett* è comunque sbagliato, perché nel mio
caso si tratterebbe di *cube*.

Il giorno 20 febbraio 2012 14:27, Martin Koppenhoefer <
dieterdreist a gmail.com> ha scritto:

> Am 20. Februar 2012 14:25 schrieb Carlo Stemberger <
> carlo.stemberger a gmail.com>:
> > Solo un appunto lessicale.
> >
> > In italiano i sampietrini sono i cubetti di basalto (una pietra grigia),
> > mentre i cubetti di porfido (una pietra rossastra) si chiamano bolognini.
> > L'etimologia penso che sia evidente.
>
>
> propongo di usare "surface:material" per queste differenze. Come si
> chiamano i sampietrini di granite in italiano?
>
> Ciao,
> Martin
>
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