NM CID GF-4 Practice Questions - New Mexico CID GF-4 Drainage Or Flood Control Systems Contractor Examination Exam

The invert (flowline) elevation of a storm sewer or culvert is the elevation of:

The inside bottom of the pipe or structure where water flows The top of the pavement over the pipe The existing ground at the centerline hub The top of the bell on ductile-iron pipe

Correct Answer:

The inside bottom of the pipe or structure where water flows

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