PVC Expansion Fitting

[jgarnhum121]

Do I need two expansion fittings for an underground service coming off the meter, underground about 30-40 ft and then up into a mobile home? I know ill need one coming off the meter but do I need one when i stub out of ground? hoping not as i need to use SCH 80 because of where it will stub out!! TIA

 

[tom baker]

See 352.44. You'll need to calculate the max expansion for your region by using Table 352.44. In the Puget Sound area, I don't see expansion fittings for your application. Other areas do use them, there are some slip type fittings used for your application that would be simpler than the traditional expansion fitting.

 

[GoldDigger]

As Tom notes, the variation in ground temperature may be low enough that no horizontal expansion joint is required at all.
But if frost heave is a factor you may need a vertical expansion joint or slip joint at each end even though the vertical length is short.