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permissible fittings for underground soil pipes

permissible fittings for underground soil pipes

permissible fittings for underground soil pipes

The underground waste pipe (coming from lavatories) exiting from our building is right in front of the building entrance that has stairs and a ramp. The drawings call for this pipe to be connected to a gulley trap which in turn is connected to the soil drainage manhole that is also right in front of the stairs.
A proposal is to shift the gulley trap away from the stairs and to route the drainage line from the building to this gulley trap by use of a 45 degree bend in the line. The outlet of the gulley trap will then be connected to the manhole.
Can the 45 degree elbow be used without any provision of a cleanout or not? Actually there is no place for the cleanout anyway.

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