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- Snow zone per commune in France
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- Eurocode Snow loads

Eurocode General procedure

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Eurocodes snow zone per commune, canton and department

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Snow zone map in Italy

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In Italy, snow regions vary between snow zone I-A (Alpine), I-M (Mediterranean ), II and III

Snow zones | I-A | I-M | II | III |
---|---|---|---|---|

Characteristic value (S_{k}) of the snow load on the ground to an altitude below 200 m | 1,50 | 1,50 | 1,00 | 0,60 |

Snow zones | S_{k} Altitude > 200m |
---|---|

I-A | |

I-M | |

II | |

III |

The building is located in snow zone I-A at an altitude of 578 m.

The standard applicable for snow load calculation on this building is EN 1991-1-3 (07/2003) and its national annex NTC GAZZETTA UFFICIALE (02/2018)) . ##### Characteristic snow load on the ground

##### Characteristic snow load on the ground of the site

##### Normal snow load on the ground of the site

##### Equivalent snow depth on the ground of the site

The values of surfacic loads of snow on the ground s_{k,0}, corresponding to lower altitudes, are specified by the national annex.

This one provides a country map divided into climatic zones.

For the zone I-A, the specified value of the load is : s_{k,0} = 1.500 kN/m^{2}.

This one provides a country map divided into climatic zones.

For the zone I-A, the specified value of the load is : s

The load s_{k,578 m} incorporates the influence of altitude here equal to 0.766 kN/m^{2} :

s_{k,A} = $S_{k,200} \cdot \left( 1 + \left(\frac{ \displaystyle a_{s}}{ \displaystyle 728} \right)^{2}\right)$ (NTC GAZZETTA UFFICIALE - 3.4.2 (02/2018) - Equation 3.3.8)

s_{k,578 m} = $1.39 \cdot \left( 1 + \left(\frac{ \displaystyle 578.0}{ \displaystyle 728} \right)^{2}\right)$

s_{k,578 m} = 2.266 kN/m^{2}

s

s

s

The National Annex does not give the elements for adjusting the snow load on the ground with the return period.

So we will just have: s_{n} = s_{k,578 m} = 2.266 kN/m²

So we will just have: s

For checkings at serviceability limit states:

- fresh snow depth = 226 cm,
- settled snow depth = 113 cm,
- old snow depth = 64 cm,
- wet snow depth = 56 cm.
- with: snow depth = $\frac{ \displaystyle s_{n}}{ \displaystyle \rho}$

For checkings at ultimate limit states:

- fresh snow depth = 339 cm,
- settled snow depth = 169 cm,
- old snow depth = 97 cm,
- wet snow depth = 84 cm.
- with: snow depth = $\frac{ \displaystyle \max_{1.5 \cdot s_{n}},s_{Ad}}{ \displaystyle \rho}$

with: (Annex E)

- fresh snow density = 1 kN/m
^{3}, - settled snow density = 2 kN/m
^{3}, - old snow density = 3.5 kN/m
^{3}, - wet snow density = 4 kN/m
^{3}

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