Once planning is complete, the next step is excavation. The area around the existing manhole should be carefully dug out to expose the structure beneath. The depth and diameter of the excavation must allow for the proper fitting of the frame and cover. The subgrade, or the bottom of the excavation, should be firm and level. If the existing subgrade is unstable, it may be necessary to add a layer of compacted gravel to create a solid foundation.
1. Standardization The primary advantage of Euro pallets is their standardization across Europe. This facilitates more straightforward handling, stacking, and storage within warehouses and distribution centers, as all parties involved in the supply chain are familiar with the dimensions and load capacities.
The Importance of Hydraulic Manhole Covers in Urban Infrastructure