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Section 1
1-49
Only one of the attributes described in sections 1.8 and 1.9 can be
assigned to a given member. The last one entered will be used. In
other words, a MEMBER RELEASE should not be applied on a
member which is declared TRUSS, TENSION ONLY or
COMPRESSION ONLY.
1.9 Truss/Tension/Compression - Only Members
For analyses which involve members that carry axial loads only,
i.e. truss members, there are two methods for specifying this
condition. When all the members in the structure are truss
members, the type of structure is declared as TRUSS whereas,
when only some of the members are truss members (e.g. bracings
of a building), the MEMBER TRUSS command can be used where
those members will be identified separately.
See section
5.23
In STAAD, the MEMBER TENSION or MEMBER
COMPRESSION command can be used to limit the axial load type
the member may carry. Refer to Section 5.23.3 for details on this
facility.
1.10 Tension/Compression - Only Springs
In STAAD, the SPRING TENSION or SPRING COMPRESSION
command can be used to limit the load direction the support spring
may carry. The analysis will be performed accordingly. Refer to
Section 5.23.4 for details on this facility.
See section
5.23