1 when the nozzle is arranged on the plane below the bottom of the beam or other obstacles, the distance between the splash plate and the top plate should not be greater than 300mm, and the vertical distance between the splash plate and the bottom of the beam and other obstacles should be 25 mm ~100 mm. ..
2 When arranging sprinklers between beams, the distance between sprinklers and beams shall comply with the provisions in Article 7.2. 1 of this specification. When there are difficulties, the distance between the splash plate and the roof should not be greater than 550 mm. When the distance between the splash plate and the roof reaches 550 mm, the nozzle should be added below the bottom of the beam if it still cannot meet the provisions of Article 7.2. 1 of this specification.
3 For the sprinklers below the multi-ribbed beam slab, the vertical distance between the splash plate and the bottom of the multi-ribbed beam slab should be 25mm ~ 100mm.
In places where grids and grid-like permeable ceilings are installed, when the permeable area accounts for more than 70% of the total ceiling area, nozzles shall be set above the ceiling and meet the following requirements:
1 The clear width of the opening of the transparent ceiling should not be less than 10mm, and the thickness of the opening should not be greater than the minimum width of the opening;
2 The distance between the nozzles and the distance between the splash plate and the upper surface of the ceiling shall comply with the provisions in Table 7. 1. 13.