When can the beams in the house be hoisted? How long does the girder need to be maintained?

1. If it is integral cast-in-place concrete, the formwork back beam and floor slab shall be cast at the same time;

2. If it is split cast-in-place concrete, the slab can be poured after the beam reaches 80% curing strength. About 7 days;

3. If it is a wood structure, the floor can be installed after the girders are installed.

The concept of girder:

Girder, that is, beam, is the most important piece of wood on the wooden cylinder that forms the roof. It is one of the main parts of the traditional wooden structure building skeleton.

Schematic diagram of main girder: