Theatre Design & Technology - Spring 1993 - 59

USITT SCENIC DESIGN AND TECHNICAL PRODUCTION GRAPHIC STANDARD
separating it from tonnentors or other
coplanar features. See fig. 2.2.6. A
local note "SL" or "SET Lh\'E" may be
required for clarity.
2.2.7

CENTER LINES.

2.2.7.1

CENTER LI ES IN GENERAL
APPLICATIONS. Athin line of the
fonn long-short-Iong. See fig. 2.2..

2.2..2

SPECiAL FORM FOR MAJOR
ARCIDTECI1JRAL FEATURES
(e.g., STAGE CENTER LINES).
Athin line of the form long-short-long
with a local note as "CL" appended
near the lower edge of the view for
emphasis. See fig. 2.2..

2.2.8

LEADERS.

2.2.8.1

LINEAR LEADERS.
Athin solid line which is inclined
relatil'e to the major horizontal and
vertical axes and having an arrow
pointing toward the feature
referenced. See fig. 2.2.8.

2.2.8.2

2.2.8.3

SERPENTINE LEADERS.
A thin solid irregularly curl'ed line
with an arrow pointing toward the
feature referenced. See fig. 2.2.8.
LEADERS TO AN OUTLINE.
Alinear or serpentine form leader
terminated by an arrow pointing to the
referenced outline.

diagonal lines. See fig. 2.2.10.2.
Other standard section lining patterns
may be used to differentiate material
as required. Uused atypically these
should be identified in the Legend or
by local note.
2.2.10.3 SECTION VIEW OF ITEMS TOO
THIN FOR SECTIO LINING
(Le., CROSS-HATCH).
When a surface i too small to crosshatch it may be depicted by a solid
line of proper scale thickness. See fig.
2.2.10.3. (Variations from true scale
are acceptable if required for clarity.)
2.2.10.4 OUTLINE OF SECTIONED BODYARCffiTECTURAL.
The outline of section views of large
architectural solids may be described
by an e;"1ra thick line in lieu of section
lining (cross-hatching). See fig.
2.2.10.4.
2.2.10.5.1 CUITING PLANE LINE.
Athick dashed line of the fonn longshort-shon-Iong. Arrows at the ends of
the culling plane line indicate the
direction of view. See fig. 2.2.10.5.1.

2.2.9

2.2.10

LEADERS TO ASURFACE.
Alinear or serpentine form leader
terminated by a dot on the referenced
surface. See fig. 2.2.8.
EXTE SIO
D DIME SIO
UNES.
Thin lines of the fonn shown in fig.
2.2.9.

2.2.12

LINES RELATED TO SECTIO
VIEWS.

2.2.10.2 SECTIO LINES - S AL FORM.
Section lining-Le., "cross-hatch"consists of thin, unifonnly spaced

3.0

DlMENSIO I G.

3.1

GENERAL.

3.1.1

CRITERIA.
Dinlen ions must be clear, consistent
and easily understood.

3.2

UNITS.

3.2.1

METRIC.
Dimensions less than one meter are to
be noted as a zero, decimal point, and
portion of meter in numerals. All
measurements one meter and greater
shall be given as a whole meter
number, decimal point and portion of
meter: O.lm, 0.52m, 15m, 2.35m.

3.2.2

E GLISH.
Dinlensions less than 1'-0" are given
in inches without a foot notation, such
as 6" 9 112", etc. Dinlensions 1'-0"
and greater include the whole feet
with a single apostrophe foUowed by a
dash and then inches foUowed by a
double apostrophe: '-112" 18'-5
1/4",1'-3".

BREAKlI E.
Athin line of the form shown in fig.
2.2.11. The line extends slightly
beyond the edges of the object and is
appropriate for both shon and long
break applications.
PHANTOM LINE.
Athin dashed line of the fornl longshort-short-long for use in adjacent
part, alternate position or repeated
feature applications. See fig. 2.2.12.

GENERAL FORM.
See fig. 2.2.9.

3.3.1

LINE WEIGHT.
See Art. 2.2.9 (Lines: Extension &
Dimension) & fig. 2.2.9.

3.3.2

ORlRNfATION.
Dimensions should be oriented to
read from the bottom and/or right
hand side of the dra\\~ng.
DlM.E SIO I EXTENSIO LINES

o OBJECT.
2.2.13

2.2.10.1 SECTION OUTLI ES.
Athick solid line equil'3Jent to a
VISIBLE EDGE U E. See fig. 2.2.10.1.

LINES NOT SPECIFIED IN THESE
RECOMMENDATIO 'So
Any spedallines not described in
these recomrnembtions should be
noted in the legend of each sheet.

2.2.10.;.2 CUITING PLANE LINEALTERNATE FORM.
Short thick lines at the terminations of
the culling plane. Arrows at the ends
of the cutting plane line indicate the
direction of view. See fig. 2.2.10.5.2.
2.2.11

2.2.8.4

2.3

DATUM LINE.
Athin. solid line lvith a local note as
"DL" which may be used in situations
where clearly definable reference
planes are not available, Le., "Plaster
Lines" in ground plans. See Art. 4.1.3
(Reference Points and Planes). See
fig. 2.2.13.

Dimension and e.\1ension lines may be
placed on a drawn object provided
object lines are clearly differentiated
from dimension and e.xtension lines by
contrasting line weight. See Art. 2.~.~
(Lines: isible Edge), Art. 2.2.9
(Lines: Extension and Dimension) and
fig. 3.5.1.1. ("Centers"). Extension
Table of Contents for the Digital Edition of Theatre Design & Technology - Spring 1993
