Architectural Drawings - Carpenter's and Builder's Math, Plans, and Specifications - page 274

There are many types of doors that will be used, the symbols for
some of these being shown in Figure 9-22K-Q. There may also be
special doors used, and where this is called for, a drawing showing
the detail should accompany the main drawing. Detailed sketches
or drawing inserts should show all details of sills, especially where
masonry construction is to be used. In drawings, the dashed line
should be avoided where it is intended to indicate some part that
is in view. The dashed line is ordinarily intended to represent some
hidden feature or part.
Figure 9-23 shows a few conventions or symbols for chimneys
and fireplaces. There may be special features that should be shown
in additional drawings. In each case where details are required, a
notation should be added referring to the detail drawings.
Stairs must be identified as to their direction, and whether they are
boxed or open. Figure 9-24 shows some methods of identification.
Arrows show the direction of the stairs.
Figure 9-25 shows symbols for the identification of materials.
If confused as to an abbreviation while reading a drawing, con-
sidering the nature of the work will be helpful in interpreting the
abbreviations. It should be understood that these abbreviations re-
late only to one part of the subject. For every field (such as carpentry,
electrical work, and so on), there are many conventions relating to
each individual field. Table 9-1 shows common abbreviations used
in construction drawings.

Ta ble 9-1 Common Abbreviations Used in

Construction Prints

Construction Feature Abbreviation

Access door AD

Access panel AP

Acoustic ACST

Aggregate AGGR

Aluminum AL

Anchor bolt AB

Angle ANG

Apartment APT

Area A

Area drain AD

Asbestos ASB

(continued)