Is it necessary to dig the foundation for a self-built house?

The foundation of a self-built house must be dug.

The foundation is located on the foundation. From then on, the soil and stone under and around the foundation can not be regarded as ordinary natural things, and its changes such as freezing, rain, settlement, loss and erosion will affect the structural safety of the buildings above it.

Therefore, the foundation soil (especially the soil above the bearing layer) must avoid all kinds of external disturbances. So the foundation should be buried to a certain depth (the shallowest depth is the local frozen soil depth). In addition, in order to prevent the foundation of the building from being exposed or buried too shallow, it will be damaged by external force collision during use.

Construction method:

1. Construction technology: measurement and positioning → mechanical entry → earthwork excavation → basement leveling → basement drilling →3:7 lime soil backfilling.

2. Construction technology: clean up the surface garbage and transport it outside, excavate it from west to east and from top to bottom in turn, and excavate it according to the construction excavation line. All earthwork should be piled up on the south side of the site for backfilling.

3. Construction method: 270 tire excavators 1 set, 50D loaders/set, 18t roller 1 set, and 6 dump trucks are transported abroad.

4. Mechanical slope trimming: After the foundation pit is excavated to a certain extent, mechanical slope trimming is adopted, and the slope ratio is planned according to the soil quality and surrounding environment. The gradient coefficient of the slope is 1:0.3, and mechanical slope consolidation and mechanical excavation are carried out at the same time. Construction personnel are required to walk within the walking range and turning radius before and after the machine.

5, set fastener steel railings around the foundation pit, and tie the federated eye network, set up warning signs to prevent people and objects from falling.