GB 50084-2017 第7.1.11条
| | In locations with open-grid ceilings, sprinklers shall be installed below the roof slab. When the open area exceeds 70% of the total ceiling area, sprinklers shall be installed below the roof slab, and the distance from the deflector to the upper surface of the ceiling shall not exceed 100 mm; when the open area does not exceed 70% of the total ceiling area, sprinklers may be installed below the ceiling, and the distance from the deflector to the lower surface of the ceiling shall not exceed 150 mm. |