How to Attach an 8-Inch Plastic Drainpipe in the Ground

Dig up the connecting pipe in the ground and clear away any debris. Dig out the end of the pipe that you will be connecting to the other piece of pipe so that there is clearance all the way around the pipe.

Measure the distance between the two pieces of pipe to be connected. If you'll be connecting the pipe in the ground to a downspout, you'll need a 90-degree PVC elbow and a PVC downspout adapter. Measure the opening of the downspout and purchase the appropriate-sized adapter. Adapters come in rounded or rectangular versions and may include an offset opening. Coupling pieces are used to connect one piece of plastic pipe to another. Purchase coupling pipes and the appropriate length and width of pipe, as needed, to fit the 8-inch in-ground pipe.

Dry-fit the pipes and coupling onto the pipe in the ground. Cut down the pipe, as needed, with a fine-tooth saw.

Disconnect the dry-fitted pipes. Pick up the first pipe or coupling piece connected to the in-ground pipe and brush primer onto the two connecting pipe ends.

Brush the primed ends of the pipe with cement then attach the two ends. This must be done within 10 seconds of brushing the cement onto the ends of the pipes. Hold the two pieces of piping together for 30 seconds then proceed to the next pieces of pipe. Use this method to connect all of the pieces of pipe that you dry-fitted in Step 3.

Re-bury the pipe with the soil you dug up.