I have an existing (in-place) pipe that must be used as a casing for a new force main. The existing pipe is 20 feet below the roadway. The current plans show two vertical bends after coming out of the casing in order to get the force main back up to workable grade, where the pipe laying would continue for the duration of the force main alignment. I guess I feel like it would be better to gradually make up that grade rather than doing so with vertical 90's. However, gradually making up 20 feet of grade would require some distance of deep sewer laying, that I'm not sure other site constraints would allow. What are your thoughts on the inclusion of the two vertical 90's to bring the force main back up?
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