Yes, according to the pipe diameter section, subgrade elevation-trench foundation elevation = excavation depth. In addition, it is better to calculate the pipeline section with abrupt terrain separately. Use EXCEL to input the elevation of all buried depths, and then take the average.

Bored embedded steel beam bracket

The support method adopts D400 auger drill to drill holes and extends to the bottom of the groove1~1.5m. I-beams are laid in the holes, I-beams and cross braces are fixed with the excavation, and soil retaining plates are erected, and the square wood is placed between the I-beams to avoid pressing the soil retaining plates.

Scope of application When the groove depth is more than 4m, the straight groove may collapse.