This specification covers procedures, soils, and soil placement for the proper installation of corrugated steel pipe and pipe-arches for sewers and other applications. The supporting soil beneath the pipe must provide a reasonably uniform resistance to the imposed load, both longitudinally and laterally. All pipes shall be unloaded and handled with reasonable care. Material used for bedding beneath the pipe shall meet the requirements specified. Pipe shall not be rolled or dragged over gravel or rock and shall be prevented from striking rock or other hard objects during placement on bedding.