1, pay attention to construction:
(1) The plastic pipe should not be folded or cracked, and there should be no debris in the pipe. The cutting mouth should be flat and the pipe mouth should be scraped.
(2) The connection of the plastic wire and pipe is glued, and the ends of the pipe joints should be tied tightly with the floor ribs;
(3) The plastic pipe must be firmly bonded tightly, and plastic pipe plugs should be plugged at the pipe port to prevent irrigation and plugging.
(4) A variety of switches, socket boxes, lamp terminal boxes, and pipe connections in the floor, wall, and brick structure must be connected by a connector. It is forbidden to extend the plastic pipe directly into the terminal box.
(5) Concealed junction boxes require the interior to be filled with wet cement paper or plastic foam, and no cement paper is allowed on the outside. The plastic line pipe and terminal box embedded in the floor and shear wall should be fixed firmly to prevent shifting.
2, the construction method of Ming pipe
Generally, pipes are laid along walls, brackets, and hangers. Pipes are to be pre-bent for various brackets, hangers, and large steel pipes according to design drawings or standard drawings before laying.
3, brackets, hangers generally use angle steel production
4, measurement positioning
(1) The open piping shall be carried out after the decoration of the building is completed. Prior to piping, the position of the distribution equipment, the positions of various boxes, boxes and electrical equipment should be determined according to the design drawings, and the boxes, boxes and buildings should be firmly fixed, and then the principles of the Mingling pipeline should be horizontal and vertical, along the line. The positioning of the bullet line in the horizontal direction and the vertical direction, the distance between the fixed point of the hanger and the hanger should be uniform, and the distance between the tube card and the terminal, the midpoint of turning, the edge of the electrical appliance or the junction box is 150-500 mm.
(2) The bending radius of the open pipe shall not be less than 6 times the outside diameter of the pipe, and shall not be less than the minimum allowable bending radius of the cable penetrated.
(3) When piping, pay attention to the elbow of each cable pipe should not exceed 3, and the right angle bend should not exceed 2 pieces.
(4) When the pipeline exceeds a certain length, a junction box shall be installed to facilitate threading. Pipes should be compensated for when they pass through settlement joints of building expansion joints.
5, wire tube dark laying form
(1) Cast-in-situ concrete slabs, walls, columns, and beams are piped with walls and bricks.
(2) Concealed pipelines shall be constructed in close cooperation with the main civil engineering works and the height of the buildings shall be given during the construction of the main civil works.
(3) The piping shall be reduced as much as possible, along the shortest path, after comprehensive consideration to determine the location and direction of laying of the rational pipeline, determine the correct position of the correct box.
(4) According to the actual laying of the construction drawings, a variety of pipe bending and box boxes are processed.
(5) Determination box and box position
According to the requirements of the construction drawings, the positions of the boxes and boxes are determined. Based on the horizontal lines marked by the civil works, the connected devices are leveled and the actual installation positions of the boxes are marked.
(6) Fixed cassettes
The pipelines and steel bars can be bundled and fixed by iron wire. The distance between the surface of boxes and boxes and the surface of buildings and structures is generally not less than 15mm. The boxes and boxes shall be filled with plastic foam or other fillers to prevent the cement from falling into. Boxes and boxes require a firm and stable placement with correct coordinates.
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