Figure 2-8.Architectural symbols for plans and elevations.
scale. He selects some smaller dimension to represent a
foot and reduces all dimensions to this unit. A floor
plan or an elevation is often drawn at l/48 the size of
the real building. A drawing 1/48th size would be
drawn at a scale of 1/4" = 1'0". Each l/4 inch on the
drawing equals 1 foot on the actual building. Different
scales are used to show different areas of the drawings.
While floor plans and elevations are commonly drawn
l/4" = 10, detail drawings are drawn at a larger scale,
usually 1" = 10. Sometimes full-scale drawings are
used to show a small detail. The scale is normally noted
in the title block or beside each drawing on the print.
Scaled drawings are made using an architects
scale (fig. 2-11). An architects scale has 11 scales
(table 2-2). The numbers at each end of the
architects scale designate the scale. Figure 2-12
shows an enlarged view of part of a l/4-inch scale.
Each division on the scale equals 1 foot on the actual
building. The small divisions to the right equal 1
inch on the building, thereby allowing more accurate
measurement. This scale is read from right to left.
Architects and drafters use an architectural scale to
draw blueprints. Figure 2-13 shows how the scale is
used to check a measurement on a blueprint. Note
how the small divisions (at the right) are used to get
exact measurements; in this case, 8 feet 8 inches.
Some blueprints are drawn so that features on the
structure fall within a set module or measure. A
modular system is based upon a grid with a set
measure, normally 4 inches or a multiple of 4 inches,
such as 16. 24, or 48 inches. Walls, floor levels, and