What are the included angles of pipeline strip foundation?

90 degrees, 45 degrees, 22.5 degrees, etc. Pedestal refers to the natural or artificial foundation or support of the bottom layer. The common materials of the pedestal are sandstone and cement, and the common angles of the pipeline pedestal are 90 degrees, 45 degrees, 22.5 degrees, 1 1.25 degrees, 7.5 degrees and 3.75 degrees.