What precaution should be taken when performing hydraulic ventilation?

When performing hydraulic ventilation, it is essential to avoid excessive water damage to the window or door frames. This is crucial because hydraulic ventilation relies on the application of water in a controlled manner to create a steam effect, which helps clear smoke from the structure. If too much water is directed at windows or door frames, it can lead to significant structural damage, compromising the integrity of the building and potentially putting occupants and firefighters at greater risk.

Additionally, excessive water can hinder visibility, create hazardous conditions from water pooling, and pose risks of increased fire load from damaged materials. Therefore, maintaining a balance between effective smoke removal and protecting the structural elements is key to successful hydraulic ventilation.