Pipe ramming is ideal in adverse soil conditions—such as gravels or cobbles—where directional drilling is not feasible. Pipe ramming uses a pneumatic powered tool to drive a steel pipe horizontally into the ground. The front end of the pipe is left open, allowing soil to enter the pipe. After installation is completed, the soil is removed by doubling up the casing or auguring out.
Summary of the pipe ramming process:
Rammer and first pipe section are lowered into the starting pit and placed on a fabricated launch platform.
The tool is firmly secured to the pipe ensuring that full impact is transmitted to the pipe.
Rammer is connected to a conventional air compressor and the section is driven—similar to driving a stake with a sledge hammer. This system does not require thrust support.