Discussion on issues in trench design
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The regulations require that the bottom of the trench should have a longitudinal slope of not less than 0.002, while the bottom of the trench cross-section should have a slope of 0.05. ”What’s the logic behind it? How do people actually do it?
Slopes are provided in the trenching for drainage; water collection points should be installed at regular intervals, as well as drainage facilities
I also think it's for drainage purposes.
It is used to remove any water that may accumulate in the ditch; first, the water is gathered on one side of the trench and then drained away along the slope
One function of the slope is to facilitate drainage, preventing water from accumulating in the ditch; another function is related to safety – if there is a leak in the pipes within the ditch, the material must be removed, and a slope makes it easier to clean this area thoroughly.
Are the trenches that people actually see being constructed all equipped with two slopes?