Should the flue be embedded before the cabinet is installed?

For the flue installed on the ceiling, the flue pipe should be reserved before the ceiling installation.

The flue must be installed at the joint of the floor, the joint of the upper and lower pipes should be sealed with cement sand and plain ash, the gap between the pipe and the floor should be filled with C20 fine stone concrete, and the C20 concrete sill should be poured (the sill thickness is 80, and the sill top elevation is 200 higher than the hall floor elevation), and the exhaust duct of each floor should be supported (the lower end of the flue should be embedded with iron pieces, and the floor should be welded with angle steel). ?

After flue installation, the gap between flue and wall must be filled with C20 fine stone concrete. If the gap is too small, the wall should be plastered before installing the flue to prevent the flue from passing through the wall to prevent smoke. ?

Foreign objects are not allowed to be thrown into the flue during construction. During the construction and installation of the flue, the nozzle should be shielded until the interface is installed. When the shelter is made of thin-walled cement mortar, the manufacturer should embed iron wires on its surface, which is convenient for pulling out when dismantling, so as to avoid the thin wall falling into the flue when dismantling.

Extended data:

Matters needing attention

1, "bare wire" is buried in the wall. According to the regulations, the protective tube must be worn when the wire is buried in the wall.

The wires in the pipeline are overloaded. According to the electrician's construction specification, the cross section of the wire shall not exceed 30% ~ 40% of the pipe. It is easy to cause that there is not enough gap in the tube, and the heat generated by the conductor passing through the tube with large current cannot be dissipated, thus there is a hidden danger of easy aging and fire.

3. Strong and weak current "* * * pipes", in the construction, strong current (such as lighting wires) and weak current (such as telephone lines and network cables) are in one pipe or box, so laying one less pipe or box saves time, labor and materials.

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