Relative vs. Nodal bracing
Relative vs. Nodal bracing
(OP)
Appendix 6 of AISC 360-05 describes two types of bracing. Relative and Nodal. Can anyone explain in simplier terms than the spec what these two are?
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Relative vs. Nodal bracing
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RE: Relative vs. Nodal bracing
RE: Relative vs. Nodal bracing
A relative brace is a brace between two objects that moves along with the objects - they are objects being braced are being braced RELATIVE to one another - but the entire system can still be swaying. For instance the diagonals in a braced frame are relative - they brace the columns however the entire frame can still sway. Think of it as INTERNAL bracing to the system. These are the most common types of braces in building construction.
A nodal brace braces an object from an exterior "rigid" point. Think of a big concrete shear wall with beams over to a moment frame. The beams brace the columns at descrete points, the columns are not braced relative to one another.