Does the finished flue need plastering? ....

The finished flue generally does not need plastering.

A, residential flue design requirements:

■ ? If conditions permit, the first floor can be replaced by cast-in-place reinforced concrete flue, and the second floor can be replaced by local falling plate (down by about 500). ?

■ ? If the flue passes through the floor, a concrete barrier should be made at the root, and the height of the barrier should be 200 higher than the floor elevation of the hall. ?

■ The flue outside the roof and hood must be made into a reinforced concrete integral structure.

■ The height of the finished flue is consistent with the floor height, and the flue must be joined at the floor position.

■ ? In terms of flue layout, if the opposite has no influence, it can be considered to be arranged outdoors, which can not only increase the use area of the room, but also reduce the hidden danger of water leakage in the kitchen and bathroom.

Second, the process requirements?

■ ? Flue manufacturers must cooperate with the general contractor to improve the flue production process to ensure that the surface of flue plastering is rough, so that flue plastering will not fall off in the future.

■ ? All flues must use thin-walled M20 high-strength cement mortar and steel wire mesh, and glass fiber mesh is not allowed. Ensure that the thickness of thin wall is15 mm (the thickness of flue above 800× 400 is 25MM).

■ The flue variable pressure plate shall be made of the same material as the flue wall and cast in situ as a whole.

■ ? The variable pressure plate of variable pressure flue changes with the change of floors, and the structure of each floor of variable pressure flue is different, which makes the engineering use and flue production easily confused. Therefore, Party A and the supervision company must inspect and monitor the flue manufacturers.

In the manufacture and installation of flue, each flue must be marked according to the building and floor to prevent confusion.

■ ? The flue air inlet without check valve must be equipped with finished product interface and rubber ferrule. Convenient for small business owners to connect smoke exhaust hoses.