Industrial natural roof ventilation is a kind of ventilation and smoke exhaust equipment installed on the roof. It is composed of skeleton, window, rain-proof board, flashing board, electric control system and other components, and is installed on the base. Because the natural vent has a certain weight, it should fully consider its own load before installing it on the base.

1. Common types of base profiles

Generally, section steel is used for the roof smoke vent base of industrial plants, and the common types are: I-beam, channel steel, C-beam, and H-beam. The specific material selection is related to the weight of the smoke vents and the distance between the lower supports.

2. How to choose the base profile

The lower support member of the ridge ventilator is roof purlin, and the distance between the purlin is generally small. Therefore, the base is recommended to use C-shaped steel; and the lower support member of the ridge ventilation skylight base is a steel structure beam with a large distance between columns. Generally, I-beam, channel steel, and double-pin C-shaped steel are used, and H-shaped steel can be used for columns with a particularly large spacing.

3. The base can be designed by the smoke vent manufacturers

The fire-fighting electric smoke exhaust ventilator is generally designed and selected by the design unit and the owner according to the actual situation of the plant. If some project design institutes do not specify the specific ventilation and smoke exhaust skylight model, the lighting and smoke exhaust skylight manufacturer must design and recommend a suitable window type, and the steel structure construction unit will be responsible for the construction of the skylight base.