Blueprints and Construction Drawings: A Universal Language 31
The following information is also normally required in title blocks: the name and location of the activ-
ity, the specifications and contract numbers (if any), the preparing activity including the architect-engineer
(A-E) firm if applicable, and the surnames of the personnel concerned in the preparation of the drawings.
Revision Block.
Many firms provide a revision column in which drawing changes are identified and recorded. The revi-
sion block is usually located in the right-hand comer of the blueprint. All revisions are noted in this block
and dated and identified by a letter and an optional brief description of the revision with the initials of the
individual making the change (Figure 2.14). If changes are made on the face of the drawing after it has
been released for construction, a circle with a revision number or letter should accompany the change.
Figure 2.11A An AutoCAD drawing of a residential bay window showing an elevation.