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- Eurocode 1 - Actions on buildings
- Eurocode 3 - Steel structures
- Eurocode 5 - Timber structures
Fundamental value of the basic wind velocity vb,0 | 23m/s | 24m/s | 25m/s | 26m/s |
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A variation have to be considered with the probability factor cprob.
When the wind comes from a direction where the probability of occurrence of strong winds is less, a reduction can be considered with the directional factor cdir.
You should also take in account the effect of the roughness of the terrain (vegetation / urbanization) and the effect of orography (terrain relief) to accurately determine the peak velocity pressure for each wind direction.
Coordinates | 4.9013°, 50.241° | 4.9044°, 50.2436° | ||
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Elevations | 96m | 189m | ||
Obstacle effective height H | 93m | |||
Slope actual length Lu / Ld | 361.4m | |||
Slope angle Φ | 25.7% | |||
Horizontal distance site/top x | 121.2m | |||
Elevation at the place of construction | 197m |
Sectors | 1 | 2 | 3 | 4 |
---|---|---|---|---|
Categories | II | II | III | II |
Sectors | 1 | 2 | 3 | 4 |
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Sector definition | from 350° to 80° | from 80° to 170° | from 170° to 260° | from 260° to 350° |
Fundamental value of the basic wind velocity vb,0 | 24.0m/s | |||
Shape parameter K | 0.2 | |||
Exponent n | 0.5 | |||
Annual probability of exceedence p | 0.01 | |||
Probability factor cprob | 1.038 | |||
Directional factor cdir | 1.0 | 0.983 | 1.0 | 1.0 |
Basic wind velocity vb | 24.9m/s | 24.5m/s | 24.9m/s | 24.9m/s |
Reference roughness length z0,II | 0.05m | |||
Roughness length z0 | 0.05m | 0.05m | 0.3m | 0.05m |
Terrain factor kr | 0.19 | 0.19 | 0.215 | 0.19 |
Height above ground z | 7.0m | |||
Minimum height zmin | 2.0m | 2.0m | 5.0m | 2.0m |
Roughness factor cr(z) | 0.939 | 0.939 | 0.678 | 0.939 |
Obstacle type | cliffs | |||
Exposure type | - | - | downwind | - |
Factor depending on the type and dimensions of the obstacle s max | 0.0 | 0.0 | 0.598 | 0.0 |
Orography factor* co(z) | 1.0 | 1.0 | 1.308 | 1.0 |
Mean wind velocity vm(z) | 23.4m/s | 23.0m/s | 22.1m/s | 23.4m/s |
Turbulence factor kl | 0.995 | 0.995 | 1.247 | 0.995 |
Standard deviation of the turbulence σv | 4.713m/s | 4.634m/s | 6.696m/s | 4.713m/s |
Turbulence intensity Iv(z) | 0.201 | 0.201 | 0.303 | 0.201 |
Air density ρ | 1.25kg/m3 | |||
Exposure factor ce(z) | 2.124 | 2.124 | 2.456 | 2.124 |
Peak velocity pressure qp(z) | 824.7N/m2 | 797.5N/m2 | 953.3N/m2 | 824.7N/m2 |
Peak wind velocity for Serviceability Limit States vp(z),SLS | 130.8km/h | 128.6km/h | 140.6km/h | 130.8km/h |
Peak wind velocity for Ultimate Limit States vp(z),ULS | 160.2km/h | 157.5km/h | 172.2km/h | 160.2km/h |