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Section 5
5-51
END GROUP DEFINITION
where,
group-name = an alphanumeric name specified by the user to
identify the group. The group-name must start with
the '_' (underscore) character and is limited to 24
characters.
member-list = the list of members/elements/solids belonging to
the group. TO, BY, ALL, BEAM, PLATE, and
SOLID are permitted. ALL means all members+
plates+ solids; BEAM means all beams; PLATE all
plates; and SOLID all solids.
joint-list = the list of joints belonging to the group. TO, BY,
and ALL are permitted.
Notes
1) The GROUP definition must start with the START GROUP
DEFINITION command and end with the END command.
2) More than one GROUP name may be specified within the same
definition specification.
3) The words JOINT, MEMBER, ELEMENT, FLOOR and SOLID
may be provided if the user wishes to identify the group name
and lists with those specific items. However, if the group name
and list is merely a means of grouping together more than one
type of structural component under a single heading, the word
GEOMETRY may be provided. In the absence of any of those
words (GEOMETRY, JOINT, MEMBER, ELEMENT, FLOOR
or SOLID), the list is assumed to be that for GEOMETRY.
4) The same joint or member/element number may be included in
up to 4 groups. Multiple definitions are useful for output but
can be ambiguous for input data such as constants, section
property, release, etc.
5) If two or more consecutively entered groups have the same
name, then they will be merged. If not consecutive, the second
entry of the same name will be ignored.
6) A member group may be used in lieu of a member-list with
virtually any command which requires member lists, such as
MEMBER LOADS, steel and concrete parameters, etc. There
is one place however where a MEMBER GROUP will not