Before keel installation, handover inspection shall be carried out on the clear height of the room, the elevation of the hole, the elevation of ceiling pipes, equipment and its supports according to the design requirements.
All kinds of equipment, pipes, supports and thermal insulation in the suspended ceiling project must meet the fire protection requirements.
The embedded parts, steel suspenders and steel suspenders in the suspended ceiling project should be rusted.
Before installing the panel, the debugging and acceptance of pipes and equipment in the ceiling must be completed.
The arching height of the keel is 0. 1% ~ 0.3% of the short span of the room. Boom spacing should not be greater than 1200mm, and the spacing between the two ends of the main keel in the boom should not be greater than 300mm. When it is greater than 300mm, the suspender should be added. When the boom length is greater than 1.5m, anti-support shall be set; When the boom meets the equipment, the boom should be adjusted and added.
It is forbidden to install lighting, laminar flow hood and other equipment on the keel of suspended ceiling project, and hangers and suspenders must be set separately.
The elevation, size, arching and shape of suspended ceiling shall meet the requirements of design and relevant specifications.
The material, variety, specification, surface coating and color of facing materials shall meet the design requirements.
The installation of suspenders, keels and decorative materials of concealed keel ceiling project must be firm.
The material, specification, installation spacing and connection mode of the boom and keel shall meet the design requirements; Metal suspenders and keel should be treated with surface corrosion protection; Derrick and keel shall be treated with anticorrosion and fire prevention.
The joints of gypsum board shall be treated with anti-cracking treatment according to the construction technology standards. When installing double-layer gypsum board, the joints between the surface board and the base board should be staggered, and the joints should not be on the same keel.
The surface of decorative materials shall be clean, uniform in color and free from warping, cracks and defects. Layers should be straight and even in width.
The distance between lamps, sensors, nozzles and lamps on the decorative surface shall not be less than 300mm.
The joints between metal suspenders and keels shall be uniform, with consistent corner joints and smooth surface, without warping and hammer marks.
All kinds of heat preservation, sound insulation and heat insulation materials filled in the ceiling must meet the requirements of fire prevention and clean room.