1. Entrance hall: the transitional space of the building set at the entrance and exit of the building, which plays the role of separation, wind prevention and cold prevention. Build a temporary square hut outside the door in winter to keep out the cold. It's called a door war. Door bucket is a kind of cold-proof facility installed in front of Han nationality houses in Northeast China. Every winter, people will install a door hopper in front of the main door and connect it with the outer door to stop the cold wind from blowing into the house. This is a way of heating. Later, it spread from Liaoning, Kyrgyzstan and Heilongjiang provinces to all parts of Inner Mongolia, especially the Gongmen in Inner Mongolia. Doors are widely used in Liaoning, Jilin and Heilongjiang provinces, and also in winter in northwest China and Inner Mongolia. The unit door of a residential building is generally a door bucket.
For civil buildings and buildings in cold areas, the external insulation technology of envelope structure should be adopted, and open stairs and verandahs should not be set up, and doorways or other cold-proof measures should be set up for people; Buildings in cold areas should not be equipped with open stairwells and verandahs, and their entrances and exits should be equipped with doorways or other cold-proof measures.
2. Canopy: The plane structure above the entrance and exit of the building has no vertical maintenance structure, and is generally a concrete slab or glass canopy.
The biggest difference is that the door bucket has a wall and the canopy does not.