Identify
the relevant order of importance of drawings.
In a drafting office, all drawings are important. Even design sketches
& preliminary drawings, which will never be issued as an official
drawing can contain information that would be considered legal evidence if
the integrity of an engineering project is in question.
The contract drawings are probably
the most important as this is the set of drawings that was used to
determine the set price of building the project. Any changes made after
the price was agreed on are considered to be "extra" to the cost
of the project.
All reference material (reference
drawings & vendor's drawings) is important as the design
information was built around the reference material. It is therefore
important that an office has a good system to document all incoming
reference material and make sure the most recent version is what is being
used in the office.
Fabrication drawings are
important only for a short time - while the project is being fabricated.
These drawings tend to be drawn in a way that is expedient (for example,
not to scale). All the information should be correct, but it is unlikely
that these drawings will be looked at again in the future.
As-built drawings are very
useful but not always created. They take a tremendous amount of work and
often the project owner does not have the resources to bring the project
to this stage of completion.
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