The ConXL moment connection is prequalified for use in special moment frame (SMF) and intermediate moment frame (IMF) systems within the limits of these provisions. The ConXL moment connection is prequalified for use in planar moment-resisting frames or in orthogonal intersecting moment-resisting frames.
ConXL connections in SMF systems with concrete structural slabs are only prequalified if the concrete slab is isolated in accordance with Section 2.3.4. This requirement is satisfied if a vertical flexible joint at least 1 in. (25 mm) thick is placed in the concrete slab around the collar assembly and column, similar to that shown in Figure 10.4.
Figure description:
- Subject: Plan and Section A-A views of a ConXL beam-column connection isolation.
- Key Entities: Beams, deck support, central column/collar assembly, and compressible material.
- Specification: A 1.00 in. (25 mm thick vertical flexible joint of compressible material.
- Placement: Positioned around the collar assembly and column to isolate them from the structural concrete slab.
Fig.10.4. Use of compressible material to isolate structural slab from connection.