Buildings are constantly exposed to some loads due to physical and climate conditions. One of the most important among such loads is the wind load which affects windows. Wind load ranges are as follows depending on the height and type of structure:
| Elevation From The Ground (m) | Wind Speed (m/s) | General Building Wind Load Value (Pa) | Tower Building Wind Load Value (Pa) |
|---|---|---|---|
| 0 - 8 | 28 | 600 | 800 |
| 9 -20 | 36 | 960 | 1280 |
| 21 -100 | 42 | 1320 | 1760 |
| > 100 | 46 | 1560 | 2080 |
* For a building to be a tower, its height should be at least 5 times of the average building width.
* Wind load values are calculated by multiplying the table values which are inclined towards the wind route with angle “x” and Sinx values.
The wind load exposed by the windows is determined as follows in accordance with the TS 498 standard.
W = Cf.q (kN/m2)
W : Wind load value
Cf : Aerodynamic load coefficient (determining the wind coefficient depends on the geometry of the building and wind route.)
q : Suction speed pressure (q = v2 / 1600)
V :Wind speed (m/sec)
There is an inertia created by the wind loads exposed by the buildings. The value of such inertia is calculated with the formula below.
While calculating the wind load, required inertia momentum value calculated in the formula above should be provided by the window inertia momentum. Thus, the window could resist the strength created by the wind load. While calculating the inertia value of the window, the inertia values of the profile and the reinforcement sheet used should be calculated and required inertia value should be found. According to this calculation, thickness and structure of the reinforcement sheet to be used should be determined.
Window sizes and type of reinforcement sheets to be used are determined with the calculations of average wind load in the area and the inertia.