What should be paid attention to in drainage ditch construction:
1, related personnel training
Before starting work, all construction personnel shall be trained, the construction position shall be given, and the waist line shall be marked. At the same time, we should be prepared for wind, water and electricity, and all the equipment can not be started until it reaches the standard. In addition, the person in charge should strictly check the construction facilities to ensure that they are complete and correct. Once problems are found, they should be dealt with in time.
2. Drainage ditch positioning
Before construction, it is necessary to make clear the pipeline and design drawings and arrange the drainage ditch. Such as bricklaying distance, outlet pipe label and stacking area. , and then mechanical slotting, pay attention to the width, each side is about 300mm wide, and 200mm soil layer is reserved at the bottom of the ditch to facilitate later cleaning.
3. Substrate treatment
During construction, if you encounter soft or miscellaneous soil, you must communicate with the designer. Before bricklaying, the cushion type should be leveled, and then masonry should be carried out after the cushion strength is correct. And the cushion should be kept clean, and the dirt should be washed off with water. In addition, bricklaying needs to bounce off the wall datum line.
4. Waterproof treatment
After the sewage ditch is dug, two layers of mortar should be applied to achieve waterproof effect. When the mortar is dry, plug both ends of the ditch, fill it with water and check whether it leaks. No water leakage means it is qualified and can be backfilled. Pay attention to the backfill soil can not have lumps, it is best to fill it with fine-grained soil.
Summary: The above is the size standard of drainage ditch and the matters needing attention in drainage ditch construction.