【HaiChuan Civil Engineering Discussion】Which is cheaper: pre-made drainage ditches or those constructed on-site?
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An intercepting ditch, also known as a gutter, is a ditch installed outside the top of a cut slope to prevent water flowing down from the slope toward the roadbed. For cut slopes with excavated roadbeds, such intercepting ditches should be placed at a distance of 5 meters from the slope edge, with their location determined based on the terrain characteristics. On embankment slopes with filled roadbeds, the intercepting ditches should be located at a distance of no less than 2 meters from the foot of the embankment. In rainy areas, one or more drainage ditches can be installed as appropriate; their function is to intercept surface water that flows toward the subgrade from above, thereby protecting the cut slopes and the foot of the fill slopes from being eroded by water flow. Before excavating the earth cut during the rainy season, dig a water diversion ditch 2 meters away from the top of the cut slope and connect it to an outlet.
Considering the volume of work, the finished product is cheaper. Because labor costs are high at the moment, especially when the volume of work is small; the workers are all temporary staff, which results in high expenses.
The cost of carrying out the work to produce the finished product is definitely lower than with traditional methods