(1) Elastic line
Use the water level gauge to copy the horizontal point on the corner of each wall (column) in the room (if the wall is long, copy a few points in the middle), and pop up the level line (the level line is generally 500mm according to the ground), from the level line to the level The height of the ceiling design is 12mm (the thickness of a layer of white bone plate), and the level line is ejected along the wall (column) with the powder line, which is the lower skin line of the ceiling keel. At the same time, according to the ceiling plan, the position of the main keel is popped up on the concrete roof. The main keel should be divided from the center of the ceiling to the two sides, the maximum spacing is 1000mm, and the fixed point of the boom is marked. The fixed point spacing of the boom is 900~1000mm. If the beam and pipe fixing points are larger than the design and regulation requirements, the fixed point of the boom should be increased.
(2) Fixed hanging rods
The suspension rods are fixed by expansion bolts. If the ceiling of the boom is less than 1000mm, the boom of φ6 can be used. If it is 1000mm, the boom of φ8 should be used, and the reverse support should be set. The boom can be cold drawn steel and round steel, but the round steel bar should be straightened by mechanical means. For the ceiling of the master, the length of the boom is less than 1000mm, and the boom of φ8 can be used. If it is larger than 1000mm, the boom of user φ10 should be adopted, and the reverse support should be set. One end of the boom is welded with L30×30×3 corner code (the aperture of the corner code should be determined according to the diameter of the boom and the expansion bolt), and the other end can be tapped with a screw larger than lOOmm, or the finished screw can be purchased. welding. The finished boom should be rust-proofed. The boom is fixed on the floor with expansion bolts and punched with an impact hammer. The hole diameter should be slightly larger than the diameter of the expansion bolt.
(3) Set the hanging rod on the beam
1) The hanging rod should be straight and have sufficient carrying capacity. When the pre-embedded rods need to be lengthened, the welding must be lapped and the welds should be even and full.
2) The distance between the boom and the end of the main keel shall not exceed 300mm, otherwise the boom shall be added.
3) Additional hangers should be provided for ceiling lamps, tuyères and inspection ports.
GF Series Rebar Stirrup Bending Machine include GF20 and GF20 CNC, which can apply 3phase motor and single phase motor to supply power.
3phase 380V /220V/440V 50/60Hz is the popular motor in construction site.
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