| Select Type
|
Choose the method of specifying wind pressure values from the
drop-down:
- ASCE 7, IS
875, GB 50009, or
Custom – Code generated or user-entered
intensity values:
| Setting | Description |
|---|
| Intensity vs. Height table |
Enter pairs of data for wind pressure at a
given height (in the current units). Int cells – wind intensities (pressures) in force/area. Up to
100 different intensities can be defined in the input file per type.
Height cells – corresponding heights in global vertical direction,
measured in terms of actual Y (or Z for Z UP ) coordinates up to which the
corresponding intensities occur.
These values may be negative in the case of GB
50009-2012 wind loads. This indicates a ground
level below the base of the building. Note: In this
case, the first row of the Intensity vs. Height is
used to simply indicate the ground level.
|
| Generate |
Opens the code-specific wind load dialog,
which is used to generate a wind load per the ASCE 7, IS
875, or GB 50009 specifications (depending on code
selection). Input data on the type of structure,
surrounding terrain, and wind. |
- SNiP
2.01.07-85 or SP
20.13330.2016 – Russian wind load parameters:
| Setting | Description |
|---|
| Pressure |
the characteristic value of wind pressure, always
positive
|
| Terrain |
terrain roughness category:
- Coastal Zone.
- Urban Zone.
- Large City.
|
| Region |
Wind region as per clause 11.5 of SNiP 2.01.07-85*
2016. This is used to determine the wind pressure in determine the dynamic wind
component.
|
| Delta |
logarithmic decrement of
oscillations, Delta (see table 11.5 - Section 11.1.8 for the definition).
Typically values are:
- 0.15 for steel towers, masts, lined
chimneys, column means including the ones on the reinforced concrete pedestals
- 0.3 for reinforced concrete and stone
structures as well as for buildings with steel framework if there are walling
structures
|
|
