Introduction and Instructions
Small black squares on the SRAC diagrams indicate toilet facilities regardless of
the number of fixtures actually needed to fulfill code and program requirements.
The SRAC diagrams describe three circulation patterns: public, restricted, and
secure. Each is indicated by a different line style and weight. A dotted line
represents public traffic patterns used by lawyers, spectators, media
representatives, and other individuals. Restricted circulation patterns within and
between office spaces are represented by broken lines. Restricted circulation is
generally used by judges, courtroom deputy clerks, court security officers,
authorized visitors, and administrative or clerical support staff. A solid line
represents secure circulation for prisoner movement; secure circulation must not
intersect public or restricted circulation.
Although the lines used to indicate traffic patterns imply the existence of corridors,
this is not always the case. In some instances, a circulation pattern is subsumed by
another space, such as when lobby space is used as a public circulation area. In
some instances, a circulation pattern might intersect an indicated space (e.g.,
where public traffic intersects a reception counter used to control access from
waiting areas to restricted spaces). Any uncontrolled intersection of differing
circulation patterns constitutes a breach of security and must be avoided.
Additionally, lines indicating circulation do not describe egress requirements.
Large black dots on the SRACs indicate either transition or circulation termination
points (i.e., termination points for public or restricted circulation); points of
transition from one circulation type to another: public to restricted or external to
internal; or transition points from a circulation type to a given space (from public
access to a reception area).
Vertical circulation is also shown on the SRAC diagrams. A circumscribed P
indicates vertical public circulation for movement between floors. A circumscribed
R indicates restricted vertical circulation, extending to secure parking within the
building and connecting restricted circulation on other floors. A circumscribed F
indicates vertical circulation for the movement of freight and other bulky items. A
circumscribed S indicates vertical secure circulation exclusively for in-custody
defendants and security officers of the USMS.
Access to facility circulation patterns, offices, and individual space types is
indicated on the SRAC diagrams by arrows. Outlined arrows denote either public
entry or access; solid arrows denote restricted and secure entry or access. For both
types of arrows, access types are further distinguished with numbers. Please refer
to the keys of individual SRAC diagrams for additional information.
12/19/97
Introduction-13
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