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Section 1
1-93
1.19.1 Secondary Analysis
Solution of the stiffness equations yield displacements and forces
at the joints or end points of the member. STAAD is equipped with
the following secondary analysis capabilities to obtain results at
intermediate points within a member.
See sections
5.40, 5.41,
5.42 and
5.43
1) Member forces at intermediate sections.
2) Member displacements at intermediate sections.
3) Member stresses at specified sections.
4) Force envelopes.
The following sections describe the secondary analysis capabilities
in detail.
1.19.2 Member Forces at Intermediate Sections
With the SECTION command, the user may choose any
intermediate section of a member where forces and moments need
to be calculated. These forces and moments may also be used in
design of the members. The maximum number of sections
specified may not exceed five, including one at the start and one at
the end of a member. If no intermediate sections are requested, the
program will consider the start and end member forces for design.
However, of the sections provided, they are the only ones to be
considered for design.
See sections
5.40 and
5.41
1.19.3 Member Displacements at Intermediate
Sections
See sections
5.42 and
5.45.2
Like forces, displacements of intermediate sections of members
can be printed or plotted. This command may not be used for truss
or cable members.