SEMI-LAYING TYPE VENTILATION DUCT AND CONSTRUCTION METHOD THEREOF

摘要

The present invention is a ventilation duct installed in the narrow interior space as a part of the duct is embedded in the concrete of the ceiling (floor) to form a relatively high height duct in the narrow ceiling interior space to maximize the efficiency of the exhaust The present invention relates to a semi-embedded ventilation duct and a construction method thereof. The semi-embedded ventilation duct 1 according to the present invention is provided with a bottom plate 11 and both side plates 12 and has a U-shape with an open lower side. The first assembling means 13 is provided on both side plates 12. ) Is formed, the upper buried portion 10 is embedded in the slab concrete (2) to be open to the bottom surface (3); And a bottom plate 21 and both side plates 22 corresponding to the upper buried portion 10, having a U-shape with an open upper side, and forming the upper buried portion 10 on the both side plates 22. The second assembly means 23 is assembled to the first assembly means 13, and the lower exposed portion 20 exposed from the bottom surface 3 of the slab concrete (2); and includes: the slab concrete ( By assembling the lower exposed portion 20 to the upper embedded portion 10 embedded in 2), the upper embedded portion 10 and the lower exposed portion 20 are partially embedded in the slab concrete 2. An inner space formed by) forms an air passage 30.