Snow wizard (Eurocode)
The snow wizard enables you to define sufficient site information to create the snow loadcases required.
The Basic Data and Loadcases pages displayed in the wizard vary according to the Eurocode National Annex that is being worked to.
Plain Eurocode, Ireland and Sweden National Annex
| Basic Data | |
|---|---|
| Property | Description |
| Exposure Coefficient | User defined value. (Default 1.0) |
| Thermal Coefficient | User defined value. (Default 1.0) |
| Coefficient for Exceptional Snow Loads | User defined value. (Default 1.0) |
| Snow Density | Define the density of snow. (Default 2.0 kN/m2) |
| Snow Load | User defined value. (No default value) |
| Loadcases | |
|---|---|
| Property | Description |
| Loadcase | Automatically generated wind loadcase title. The loadcase title can be manually renamed if required. |
| Apply | Options are:
Note:
Undrifted (Cases A-1, B1-1, B1-3, B2-1, B3-1, B3-3)
Drifted Snow Load (Cases A-2, B1-2, B1-4, B2-2, B2-3, B3-2, B3-4)
Note:
The EC/NA recommends which loadcases to apply. |
| Loadcase Type (Plain Eurocode and Ireland National Annex) | Each loadcase has a loadcase type which can be:
Refer to EC 1991-1-3 Annex A, Table A1 |
| Loadcase Type (Sweden National Annex) | Each loadcase has a loadcase type which can be:
Refer to EC 1991-1-3 Annex A, Table A1. |
| Number of wind directions to be considered for drifted snow |
You can select between 1 and 4 separate loadcases to be generated for each 'Drifted' loadcase (identified by....1, ...2, etc. appended to the drifted loadcase name). For example if you have checked the box to apply loadcase "Snow Load - Case A - 2) Drifted" and selected 2 wind directions, the following loadcases will be created:
|
UK National Annex
| Basic Data | |
|---|---|
| Property | Description |
| Exposure Coefficient | User defined value. (Default 1.0) |
| Thermal Coefficient | User defined value. (Default 1.0) |
| Coefficient for Exceptional Snow Loads | User defined value. (Default 1.0) |
| Snow Density | Define the density of snow. (Default 2.0 kN/m2) |
| Zone Number, Z | Zone Number. (Default 2.0 kN/m2) |
| Altitude, A | Altitude. (Default 1.0) |
| Characteristic Ground Snow Load, sk | Characteristic ground snow load calculated as sk = (0.15 + (0.1 * Z + 0.05)) + ((A - 100)/525) |
| Loadcases | |
|---|---|
| Property | Description |
| Loadcase | Automatically generated wind loadcase title. The loadcase title can be manually renamed if required. |
| Apply | Options are:
Note:
Undrifted (Cases A-1, B1-1, B1-3, B2-1, B3-1, B3-3)
Drifted Snow Load (Cases A-2, B1-2, B1-4, B2-2, B2-3, B3-2, B3-4)
Note:
The EC/NA recommends which loadcases to apply. |
| Loadcase Type | Each loadcase has a loadcase type which can be:
Refer to EC 1991-1-3 Annex A, Table A1. |
| Number of wind directions to be considered for drifted snow |
You can select between 1 and 4 separate loadcases to be generated for each 'Drifted' loadcase (identified by....1, ...2, etc. appended to the drifted loadcase name). For example if you have checked the box to apply loadcase "Snow Load - Case A - 2) Drifted" and selected 2 wind directions, the following loadcases will be created:
|
Finland National Annex
| Basic Data | |
|---|---|
| Property | Description |
| Topography | Options are:
|
| Exposure Coefficient | Value determined from Topography. |
| Thermal Coefficient | User defined value. (Default 1.0) |
| Coefficient for Exceptional Snow Loads | User defined value. (Default 1.0) |
| Snow Weight Density | Define the density of snow. (Default 2.0 kN/m2) |
| Characteristic Ground Snow Load | User defined value. (No default value) |
| Loadcases | |
|---|---|
| Property | Description |
| Loadcase | Automatically generated wind loadcase title. The loadcase title can be manually renamed if required. |
| Apply | Options are:
Note:
Undrifted (Cases A-1, B1-1, B1-3, B2-1, B3-1, B3-3)
Drifted Snow Load (Cases A-2, B1-2, B1-4, B2-2, B2-3, B3-2, B3-4)
Note:
The EC/NA recommends which loadcases to apply. |
| Loadcase Type | Each loadcase has a loadcase type which can be:
Refer to EC 1992-1-3 Annex A, Table A1. |
| Number of wind directions to be considered for drifted snow |
You can select between 1 and 4 separate loadcases to be generated for each 'Drifted' loadcase (identified by....1, ...2, etc. appended to the drifted loadcase name). For example if you have checked the box to apply loadcase "Snow Load - Case A - 2) Drifted" and selected 2 wind directions, the following loadcases will be created:
|
Norway National Annex
| Basic Data | |
|---|---|
| Property | Description |
| Topography | Options are:
|
| Exposure Coefficient | Value determined from Topography. |
| Thermal Coefficient | User defined value. (Default 1.0) |
| Coefficient for Exceptional Snow Loads | User defined value. (Default 1.0) |
| Snow Weight Density | Define the density of snow. (Default 2.0 kN/m2) |
| Altitude, H | User defined value. |
| Basic Reference Altitude, Hg | User defined value. |
| Basic Snow Load, sko | User defined value. |
| Δsk | User defined value. |
| sk,maks | User defined value. |
| Characteristic Ground Snow Load, sk | Automatically determined from the above values. |
| Loadcases | |
|---|---|
| Property | Description |
| Loadcase | Automatically generated wind loadcase title. The loadcase title can be manually renamed if required. |
| Apply | Options are:
Note:
Undrifted (Cases A-1, B1-1, B1-3, B2-1, B3-1, B3-3)
Drifted Snow Load (Cases A-2, B1-2, B1-4, B2-2, B2-3, B3-2, B3-4)
Note:
The EC/NA recommends which loadcases to apply. |
| Loadcase Type | Each loadcase has a loadcase type which can be:
Refer to EC 1992-1-3 Annex A, Table A1. |
| Number of wind directions to be considered for drifted snow |
You can select between 1 and 4 separate loadcases to be generated for each 'Drifted' loadcase (identified by....1, ...2, etc. appended to the drifted loadcase name). For example if you have checked the box to apply loadcase "Snow Load - Case A - 2) Drifted" and selected 2 wind directions, the following loadcases will be created:
|