/kloc-Is the atrium below 0/2m a glass wall? Do you need mechanical smoke exhaust?

Hello, let me help you analyze it briefly.

According to the code, the atrium must be equipped with smoke exhaust measures. Then if you don't want to set mechanical smoke exhaust, you must meet the requirements of natural smoke exhaust.

If the atrium adopts natural smoke exhaust, the effective area of openable windows should not be less than 5% of the atrium area. So according to the requirements, you need to open at least 50 square meters of external window area.

In addition, the effective smoke exhaust area should be calculated for the smoke exhaust window. The specification simply states that the natural smoke exhaust window should be set above or at the top of the room (individual provinces have detailed requirements for this, such as the area below the lower eaves of the smoke storage bin cannot be counted as the effective area), and it must be equipped with a device that is easy to open. In addition, the distance between the natural smoke outlet and the farthest point should not exceed 30m, and the code suggests that smoke exhaust windows with different orientations should be set as far as possible when natural smoke is exhausted.

Conclusion: In view of your large atrium, there are only 60 square curtain walls, most of which are hung windows. , and need to set up a convenient opening device, natural smoke exhaust is basically unrealistic. Therefore, mechanical smoke exhaust is recommended.