First, the operating conditions
1. Release the main control line at the site according to the construction drawings.
2. The roof has been pressed by the keel position
Second, the construction process
Construction sequence: Erection point location Line Erection Ceiling height line Drilling installation Hanger installation Main keel Installation T-type main keel and small bone Mechanical and electrical equipment Installation and acceptance Installation of gypsum board
1. According to the horizontal line of the room 50, design the elevation from the vertical vector to the suspended ceiling, the office is 2.6m (back to the line of 50 is 2.1m, the allowable deviation is ±3mm), and the corridor is 2.3m (back to the line of 50m back to 1.8m). The ceiling elevation line is horizontal, and the keel line is drawn on the wall. The suspension bar is 150mm from the wall. The distance between the main keel and the wall is not more than 150mm. The spacing between each keel is 1m, and 1m×1m squares are played under the floor slab. Grid line. Open large office hall arching 20mm, small office arch 5mm. Corridor, arching 2mm, the short span of the room arched.
2. After elevating the horizontal height of the ceiling elevation line and the position of the keel dividing line, determine the elevation of the lower end of the boom, and press the large keel position and the spacing between the booms to weld the end of the boom without a turnbuckle to the 40×40×4 corner. Use Φ8 expansion bolts to fix the ceiling.
3. The exposed length of the end thread of the suspender should not be less than 3mm. When installing the large keel, the big keel should be connected to the suspender by hanging pieces, and the screws should be fastened firmly. Large keel lengths can be connected using plug bodies. Large keels should be leveled after installation.
The main keel of 4, 38, and 50 should be arranged parallel to the direction of the lighting fixture. The boom should avoid the position of the tuyere and the lamp. Open-office smallpox requires 12 meters to weld the recumbent large keel to the upper part of the large keel to enhance the lateral stability of the large keel and the integrity of the boom.
5. After the middle keel has been installed, after checking that the elevation, spacing, straightness and hanging load meet the design requirements, the installation of the roof panel starts from the end of the keel in the middle row of the roof, and firstly installs a small keel of the side card, and then The Calcium Silicate Board rests on the flanges of the three sides of the keel, and then the other side of the small keel is installed. Branches are installed according to the above procedure. Finally, the T-shaped Ming keel is adjusted by pulling. After the professional procedures such as water, electricity and air conditioning are completed, ceilings can be installed.
6. The gypsum calcium silicate board should be trimmed perpendicular to the ribs on the back of the board when it needs to be trimmed. Lamps and air outlets should be adjusted so that the board is on the same horizontal line. Non-monolithic plates can be slotted with a plane so that one side of the cut can be lowered to keep it level. Corrosion must be applied to the nail holes after installation of the corridor gypsum board (brush antirust paint).
Third, quality standards
1. Guarantee project: The type, specification and fixing method of light steel keel and cover panel must meet the design requirements; the installation of light steel keel must be in the correct position, firmly connected, and no loosening; the cover panel should be free of delamination, warpage, and fracture , Defects such as missing corners, the installation must be solid, no loosening.
2. Basic items: Light steel skeleton booms, large, medium, and small keels should be positioned correctly, straight, without bending, no deformation, hanging pieces, connecting pieces should meet the requirements; cover panel surface is smooth, clean, uniform color, No pollution and other defects.
3, light steel keel: keel spacing 2mm, keel flat 2mm, keel around the positive and negative 2mm
4, cover panel: surface smooth 2mm, seams 2mm flat, seam height 1mm, level around the ceiling is positive and negative 2mm
Fourth, pay attention to matters
(I) Finished product protection
1. The mounted keel must not be trampled on by anybody. Hanging parts or heavy objects of other types of work are forbidden to hang on the light steel keel.
2. During the construction of the roof, care should be taken to protect various pipe lines installed in the ceiling. The suspenders and keel of the light steel keel must not be fixed on ventilation ducts and other equipment.
3, the installed roof is prohibited from collision and pollution.
(II) Safety Measures
1. You must wear a safety helmet when you enter the scene. It is forbidden to wear slippers, high heels or bare feet to enter the construction site. Smoking is prohibited on site.
2. The operating platform used for the installation of the ceiling must be firm.
3. During the construction process, the tools should be readily put into the tool bag, and the tools or electric tools must not be tossed when transferring the materials or tools up and down. The operation of the tools and electrical equipment is strictly in accordance with the operating procedures to prevent injury.
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