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CSI 04 20 00

04 20 00 Unit Masonry: Common Contradictions and RFI Guide

Masonry specs frequently conflict with structural drawings on grout fill, reinforcement, and bond beam requirements.

Most Unit Masonry 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 04 20 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.

What goes wrong

Common contradiction types

Grout fill requirement vs. structural drawing

A frequent unit masonry 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.

Reinforcement spacing conflicts

A frequent unit masonry 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.

Mortar type vs. structural requirement

A frequent unit masonry 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.

In the field

Frequent RFIs

  • Grout fill pattern not matching structural requirement
  • Vertical reinforcement spacing conflict
  • Mortar type not matching exposure condition in spec
Coordinate

Related spec sections

Lintel scans your full document set for contradictions in Unit Masonry and every other division, before the field finds them.