2

Blueprints and

Construction Drawings:

A Universal Language

2.1 INTRODUCTION.

Not too long ago, it was predicted by some that by the beginning of the 21st century, blueprints would

become obsolete and no longer be used on construction sites. It was further suggested that construc-

tion information would essentially be read off computer screens rather than blueprint drawings. This

would not only be more efficient, but it would also save a tremendous amount of paper. These predic-

tions did not materialize. Although construction plans are read regularly on computer screens and are

being sent via computer to job sites, paper blueprint drawings remain the preferred medium on building

sites. In many parts of the world, manual drafting and blueprint drawings are still the norm.

Blueprint reading consists essentially of finding information on prints. The information may be dis-

played on a drawing in the form of lines, notes, symbols, and schedules. The items are typically located

either in the title block or in the field of the drawing (i.e., anywhere within the border lines outside the ti-

tle block). You should also keep in mind that blueprints typically come in sets. A set of prints for a sin-

gle-family residence may contain no more than a few sheets, whereas on a large project a complete

drawing set may contain scores of sheets for different disciplines (e.g., architectural, structural, electri-

cal, mechanical, plumbing, etc.).

The general process and sequence for reading blueprints can be summarized as follows:

1. Verify that the set of drawings and specifications is complete. Likewise, verify that the documents
   in hand are the most current.


2. Start by reviewing the site or plot plan to better comprehend the setting of the building and the gen-
   eral topography.

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