Since most of the laying of cement pipes is underground, the underground engineering should be handled in accordance with the rigorous construction route to ensure the smooth progress of the project. Let's take the laying of underground pipelines in strict accordance with the necessary procedures. The laying of cement pipelines is measured and laid-trench excavation-pipeline foundation construction-laying and cleaning of pipelines-concrete pouring inspection wells-township There are several processes of pouring and trench backfilling. In the meantime, the most important basic process is the measurement and payoff. The measurement and payoff is performed by a full-time surveying operator. The demanding installation records and calibration equipment are here. Testing and measurement require high standards and precision. According to the plan drawing and cross column records, check the level point, establish a temporary level point, do a good job of protection, and conduct closed retesting to control the elevation.
In addition, after the trench is dug, the elevation of the elevation should be compounded in time to control the elevation of the excavation, cushion and foundation; then the stone is kneaded and compacted, after the soil is eliminated, the reinforcement is laid, the formwork is erected, and then poured Ground. The tubes are arranged in the order from low to high. Must pay attention to the necessary questions in construction!