Indoor cast iron pipe installation preparation.
1. The underground drainage pipeline must be laid at or near the ±0 elevation of the foundation wall.
The core soil is backfilled to the bottom of the pipe or slightly higher. There is no accumulation in the room center along the pipeline, and the pipeline passes through the foundation of the building. The pipe hole has been reserved according to the design requirements.
2. The laying of drainage pipes in the equipment layer shall be followed by the removal and cleaning of the template in the equipment layer.
3. The installation of drainage pipes in the floor shall be separated from the construction of the first to second floors, and the holes and holes through the structural parts of the pipes shall all be reserved. After the indoor formwork or debris is removed, the indoor size lines and the accurate horizontal lines will be ejected. .