A suitable construction dewatering plan is necessary for keeping the project within budget and complete on time. While the construction site dewatering is costly and time-consuming, but it is necessary to remove and reduce groundwater. In this, a professional environmental compliance consultant can help.
Removing groundwater from the construction site is important to keeps the workplace safe and protects the materials at the same time. The proper dewatering plan should be prepared to utilize in compliance with best management practices.
The main purposes of dewatering foundation excavations:
Prevent Groundwater or Soil Leakage
If leakage occurs in the construction site excavation area, then it will create danger and can lead to element failure. Some important elements are used to support the foundation wall. Hence, it is important to dewater the excavation areas to avoid this.
The leakage might occur in gravelly and sandy soil with a high groundwater level. Diaphragm walls with improper watertight can also lead to water leakage. The primary reason for this situation is when water flows through poorly detailed joints and sheet piles that aren’t properly watertight.
Prevent Sand Boiling
When excavation is carried out in gravelly or sandy soil construction sites, make sure that the groundwater level will be lowered to at least 0.6 meters. If this happens, then there will be major differences in the groundwater level between the inside excavation and outside the excavation area. If the differences reached the hydraulic gradient of soil, then sand boiling would occur. Sand boiling prevention is necessary to consider.
Prevent Basement Floatation
The construction of the basement starts after the excavation process is completed. It will be possible that the basement to experience floatation during the initial stage of the construction. At this stage, the weight of the basement might be lower. When the upheaval pressure is much greater than the structure’s weight, basement floatation can occur with differential heaves from the foundation.
All work phases of basement construction are monitored with the use of construction management software. This tool offers different project management features that improve overall work performance. It helps in resulting the greater results and advanced project completions.
Prevent Upheaval Failure
The groundwater pressure from the layer will pressure the soil layer when the excavation is performed in clay soil construction sites. If the groundwater pressure overcomes the weight of soil layers, upheaval failures will occur. To avoid that failure, it is necessary to lessen down the piezometric pressure of the permeable layers. Reducing the pressure is more effective through the pumping process.
The construction dewatering is a complicated task a professional who has knowledge and experience in this can create a strategies plan for it. If you are living in New York and looking for an experienced and insured environmental compliance and consulting services provider, you can rely on AAA Group. To find more information about the construction dewatering, you can visit our website or call us directly at (718) 387–9800.