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General Description
Section 1
1-48
b) The composite deck generation method – The laboriousness of
the previous procedure can be alleviated to some extent by
using the program’s composite deck definition facilities. The
program then internally converts the deck into individual
composite members (calculating attributes like effective width
in the process) during the analysis and design phase. The deck
is defined best using the graphical tools of the program since a
database of deck data from different manufacturers is
accessible from easy-to-use dialog boxes. Since all the
members which make up the deck are identified as part of a
single object, load assignment and alterations to the deck can
be done to just the deck object, and not the individual
members of the deck.
The graphical procedure for creating the deck can be found in
section AD.2004.22.2 of the Software Release Report for
STAAD.Pro 2004’s second edition. The command input is
described in section 5.20.7 of this manual.
1.7.8 Curved Members
Members can be defined as being curved. Tapered sections are not
permitted. The cross section should be uniform throughout the
length.
See section
5.20.8
1.8 Member/Element Release
STAAD allows releases for members and plate elements.
One or both ends of a member or element can be released.
Members/Elements are assumed to be rigidly framed into joints in
accordance with the structural type specified. When this full
rigidity is not applicable, individual force components at either
end of the member can be set to zero with member release
statements. By specifying release components, individual degrees
of freedom are removed from the analysis. Release components are
given in the local coordinate system for each member. PARTIAL
moment release is also allowed.
See
section 5.22