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Runs difficulty / Color Code

post #1 of 9
Thread Starter 

 

At last I've I found some info about how and why a run is assigned one of the coded colours!

After a long time wondering, last Saturday I was skiing at Made when a sign attracted my attention.

On it, the spec to determine the difficulty level of a run were reported. I forgot to take a picture of it, because there was also indicated a website.

Anyhow I searched and found this piece, in practical terms the UNI (the Italian equivalent of the German DIN, or the international ISO) has defined, via the UNI 8137:2004, what each color means

 Blue runs as having less than 25% on inclination both longitudinally and transversally.

Red as less than 40%, with the exception of short parts of it which can be steeper

Black,  consistently and continously more than 40%

 

http://formaweb.an.camcom.it/iniziativearchivio/corsi/006/UNI_8137_2004_IT.pdf

 

The document is also available in English but I couldn’t find it on the “open” net…

Of course the catch lies in that “short part of it”. IMHO playing on that, red and black can be switched back and forth…

 

Piste blu, rosse o nere?

Per aiutarci a scegliere la "pista giusta" UNI ha appena pubblicato la nuova edizione della norna UNI 8137:2003 (now superceded by the 8137:2004)

"Segnaletica specifica per piste da sci - Caratteristiche".

 

 

 

 

Elaborata in seno alla Commissione Sicurezza dell’UNI, la norma stabilisce la segnaletica specifica da utilizzare sulle

piste da sci in rapporto ai diversi gradi di difficoltà delle piste stesse. Mediante l’assegnazione dei colori in base al grado di

pendenza della pista, la nuova UNI 8137 ci aiuterà a scegliere quella giusta e soprattutto quella più adatta alle nostre

capacità. Allora: blu, rossa o nera? Vediamole insieme.

 

 

BLU

 

L’UNI ha indicato questo colore per catalogare quei percorsi battuti con pendenza longitudinale e trasversale inferiore al

25%.

 

ROSSE

 

Sono quelle piste in cui la pendenza non può superare il 40%, ad eccezione di brevi tratti su terreno aperto.

 

NERE

 

Sono le piste difficili: la loro pendenza supera i valori massimi delle piste di media difficoltà, dice la norma, cioè hanno pendenza superiore al 40%.

 

Alpinebreak in his trip report points to a site where the toponeige difficulty skiing grade is described

and even if that’s for ski mountaineriing, it seems to me that it elaborates a bit more than what I found for groomed runs

post #2 of 9

 

Quote:
Originally Posted by Nobody View Post

 

 

So, for those of us who still think in terms of angular degrees, that would be:

 

Blue: 11.25 degrees or less

 

Red:  No consistent pitch over 18 degrees

 

Black:  Consistent pitches over 18 degrees.

post #3 of 9
Thread Starter 

Converting it into angular degrees takes away the drama, eh?

(Althought I was reminded just this past summer how even a classified blue run could be hard to climb on foot with cows grazing around you...)

 

post #4 of 9

 

Quote:
Originally Posted by Nobody View Post

 

Piste blu, rosse o nere?

Per aiutarci a scegliere la "pista giusta" UNI ha appena pubblicato la nuova edizione della norna UNI 8137:2003 (now superceded by the 8137:2004)

"Segnaletica specifica per piste da sci - Caratteristiche".

 

 

 

 

Elaborata in seno alla Commissione Sicurezza dell’UNI, la norma stabilisce la segnaletica specifica da utilizzare sulle

piste da sci in rapporto ai diversi gradi di difficoltà delle piste stesse. Mediante l’assegnazione dei colori in base al grado di

pendenza della pista, la nuova UNI 8137 ci aiuterà a scegliere quella giusta e soprattutto quella più adatta alle nostre

capacità. Allora: blu, rossa o nera? Vediamole insieme.

 

 

BLU

 

L’UNI ha indicato questo colore per catalogare quei percorsi battuti con pendenza longitudinale e trasversale inferiore al

25%.

 

ROSSE

 

Sono quelle piste in cui la pendenza non può superare il 40%, ad eccezione di brevi tratti su terreno aperto.

 

NERE

 

Sono le piste difficili: la loro pendenza supera i valori massimi delle piste di media difficoltà, dice la norma, cioè hanno pendenza superiore al 40%.

 

Can I have a translation please?

post #5 of 9

 

Quote:
Originally Posted by comprex View Post

 

 

 

So, for those of us who still think in terms of angular degrees, that would be:

 

Blue: 11.25 degrees or less

 

Red:  No consistent pitch over 18 degrees

 

Black:  Consistent pitches over 18 degrees.

 

How are you getting those statistics?

 

I got:

 

Blue: 14* or less.

Red: No consistent pitches over 21.8*.

Black: Consistent pitches over 21.8*.

post #6 of 9

 

Quote:
Originally Posted by skiking4 View Post

 

 

 

How are you getting those statistics?

 

I got:

 

Blue: 14* or less.

Red: No consistent pitches over 21.8*.

Black: Consistent pitches over 21.8*.

 

That would explain the number of euro beaters I see WAAY over their head.

post #7 of 9

 

Quote:
Originally Posted by skiking4 View Post

  

How are you getting those statistics?

 

 

EDIT:  Headslap.

 

See Ghost's post below.


Edited by comprex - 3/30/2009 at 12:49 am
post #8 of 9

 

Quote:
Originally Posted by karpiel View Post

 

That would explain the number of euro beaters I see WAAY over their head.

 

I'm a bit put off by all the signage that seems to be required on page 5-7 of Nobody's link.

 

Gah.

 

 

post #9 of 9

25% = 1/4 = one unit down for every four units horizontal

 

*

1...................*

.............4.............................*

tan(theta)= 1/4

 

theta = arctan(.25)

         =  14 degrees

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