systems, such as diagonal bracing or shear walls, prevent the relative lateral movement of adjacent stories or of adjacent points along the length of a member. Relative systems can be readily identified if a cut at any location along the length of a braced member passes through the brace member itself. Nodal systems control the movement only where they attach to the braced member and do not directly interact with adjacent brace points. Cross-frames or diaphragms between two adjacent beams are considered nodal braces. Continuous systems provide uninterrupted support along the entire length of a member, leaving no unbraced length. Shear walls and roof or floor deck are examples of continuous bracing systems. Lean-on systems rely on adjacent structural members to provide support. Lean-on bracing links together adjacent structural members such that buckling of one member requires all members in the system to buckle with the same lateral displacement.

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