NM CID GF-9 Practice Questions - New Mexico CID GF-9 Utility Lines Contractor Examination Exam

On a sewer or manhole drawing, invert elevation is the elevation of:

The top of the manhole cover The inside bottom (flowline) of the pipe or channel The existing ground at the trench centerline The top of the pipe bell

Correct Answer:

The inside bottom (flowline) of the pipe or channel

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