22 00 00 Plumbing: Common Contradictions and RFI Guide
Plumbing fixture schedules, riser diagrams, and fixture spec sheets create a three-way contradiction surface that manual review routinely misses.
Most Plumbing contradictions trace to the same root: the specification and the drawings are produced by different people at different stages, and never fully reconciled before the set goes out. By the time the conflict is found in the field, it is an RFI, a delay, or a change order.
Lintel cross-references section 22 00 00 against your full drawing set, schedules, and the rest of the project manual, flagging every disagreement with a citation to the exact page so it is resolved in review.
Common contradiction types
Fixture schedule vs. riser diagram
A frequent plumbing conflict. Lintel reconciles the drawings against the spec to surface it with a page-level citation, so it is caught in review rather than at rough-in.
Pipe material spec vs. plan callout
A frequent plumbing conflict. Lintel reconciles the drawings against the spec to surface it with a page-level citation, so it is caught in review rather than at rough-in.
Pressure rating conflicts
A frequent plumbing conflict. Lintel reconciles the drawings against the spec to surface it with a page-level citation, so it is caught in review rather than at rough-in.
Frequent RFIs
- Fixture model not matching schedule
- Pipe material mismatch between P-sheets and spec
- Water pressure requirement not met by specified equipment