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Saddle Manholes

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CivilG

Civil/Environmental
Joined
Apr 15, 2015
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21
Location
US
Could someone please tell me what a saddle manhole is and why are they used in place of regular manholes?

Thanks,
CivilG
 
A saddle or doghouse manhole is used when you want to place a sewer junction box without disturbing the existing flow for a long period of time.
The manhole without a bottom and a notch for the pipe is installed over an existing pipe. The new pipes are hooked into the manhole. Then the base is poured in place and the existing pipe cut.
 
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