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NMech
NMech
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In Europe, Eurocode EN1991-1-4:2004 describes wind loads. The nominal pressure (characeristic peak velocity pressure) for a wind with speed $v$ is calculated as

$$q = \frac{1}{2} \rho v^2$$

where:

  • $\rho$ is the air density.
  • $v$ is the velocity when taking into account orography and roughness.

Normal forces: pushing down (-) and pulling up (+)

Section 7 is devoted to pressure and force coefficients. It states net pressure coefficients should be determined for free standing wall and fences and monopitch canopies and monopitch roofs.

for 30 degrees inclination, you will get some downward pressure and some upward pressure (there are oscillations due to vorteces). The downward pressure coefficient at 1 m above ground is between -1.5 and -2.5 (depending on zone and wind direction), and the upward pressure is between 0.5 when the wind is blowing in the direction of configuration (b) in your post

Friction and tangential forces

Additionally, it defines friction coefficients for forces parallel to the surface.

Without any data, I can't really provide much further guidance because most of the data in the standard its in tabulated form.

In Europe, Eurocode EN1991-1-4:2004 describes wind loads. The nominal pressure (characeristic peak velocity pressure) for a wind with speed $v$ is calculated as

$$q = \frac{1}{2} \rho v^2$$

where:

  • $\rho$ is the air density.
  • $v$ is the velocity when taking into account orography and roughness.

Section 7 is devoted to pressure and force coefficients. It states net pressure coefficients should be determined for free standing wall and fences and monopitch canopies and monopitch roofs.

Additionally, it defines friction coefficients for forces parallel to the surface.

Without any data, I can't really provide much further guidance because most of the data in the standard its in tabulated form.

In Europe, Eurocode EN1991-1-4:2004 describes wind loads. The nominal pressure (characeristic peak velocity pressure) for a wind with speed $v$ is calculated as

$$q = \frac{1}{2} \rho v^2$$

where:

  • $\rho$ is the air density.
  • $v$ is the velocity when taking into account orography and roughness.

Normal forces: pushing down (-) and pulling up (+)

Section 7 is devoted to pressure and force coefficients. It states net pressure coefficients should be determined for free standing wall and fences and monopitch canopies and monopitch roofs.

for 30 degrees inclination, you will get some downward pressure and some upward pressure (there are oscillations due to vorteces). The downward pressure coefficient at 1 m above ground is between -1.5 and -2.5 (depending on zone and wind direction), and the upward pressure is between 0.5 when the wind is blowing in the direction of configuration (b) in your post

Friction and tangential forces

Additionally, it defines friction coefficients for forces parallel to the surface.

Without any data, I can't really provide much further guidance because most of the data in the standard its in tabulated form.

Source Link
NMech
NMech
  • 24.3k
  • 3
  • 37
  • 76

In Europe, Eurocode EN1991-1-4:2004 describes wind loads. The nominal pressure (characeristic peak velocity pressure) for a wind with speed $v$ is calculated as

$$q = \frac{1}{2} \rho v^2$$

where:

  • $\rho$ is the air density.
  • $v$ is the velocity when taking into account orography and roughness.

Section 7 is devoted to pressure and force coefficients. It states net pressure coefficients should be determined for free standing wall and fences and monopitch canopies and monopitch roofs.

Additionally, it defines friction coefficients for forces parallel to the surface.

Without any data, I can't really provide much further guidance because most of the data in the standard its in tabulated form.