Connection between a lateral and main pipe and method for making same

[0037] Referring to the drawings, the numeral 10 generally designates the ground in which a main sewer pipe 14 is buried. The ground surface is represented by the numeral 12. A first manhole 16 is provided in the ground in communication with the main sewer pipe 14 and a second manhole 18 is also provided in the ground 10 providing communication to a second place in the sewer pipe 14.

[0038] A first stake 20 and a second stake 22 are inserted into the first and second manholes 16, 18 respectively, and engage the bottom wall 24 of the manholes 16, 18. Each of the stakes is marked with a first stake mark 26 and a second stake mark 28 equidistant above the lower ends of the stakes 20, 22 so that the first and second stake marks provide a reference point for the slope of the main sewer pipe 14 between the two manholes 16, 18. A laser emitter 30 emits a laser beam 32 which is lined up with the marking 26, 28 on the stakes 20, 22. This shows the slope of the main sewer line 14 relative to the