Thanks for the post LittleInch. The purpose for digging up an existing pipe is generally to investigate and repair the pipe. Typical repairs consist of installing metal sleeves and recoating. Recoating involves sandblasting 360 degrees of pipe and applying liquid epoxy. Generally only about 25'...
I wasn't clear in my previous post. This application is for existing pipes. For example a pipeline laid in 1950, then is inspected or repaired today. I do not have any problems with new construction, aka laying a pipe today.
You have a hard time compacting because your pipe is in the way. For...
Backwelding is generally preformed in the piping world but there are a few precautions you should take to prevent any issues. I recommend preheat and ensuring the threaded components are assembled clean, without dope or tape. Make sure the welder consumes all the threads if you are attaching...
I am developing a backfill specification specifically related to how to properly support and backfill a welded steel pipeline. I am facing several challenges. It is not always feasible to bring in aggregate or other engineered materials for fill under the pipe to provide support. Pipelines are...
