Planning & EstimatingQuestion 637 of 700

On construction drawings, what does a 'revision cloud' with a triangular 'delta' symbol indicate?

a.An area of the drawing that has been changed, with the delta noting the revision number.
b.The true-north orientation of the site.
c.A required fire-rated wall assembly.
d.The location of a survey benchmark elevation.

Explanation

Correct: a revision cloud outlines the changed area and the triangular delta next to it carries the revision number, alerting readers to what changed and when. The north orientation is shown by a north arrow. Fire-rated assemblies are called out by rating notes/symbols. A benchmark is a datum reference, marked differently.

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