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When are rigid steel connectors (strap anchors) required for anchoring intersecting masonry walls?


Rigid strap anchors are only required at the intersection of walls that both are part of the lateral-force-resisting system (shear walls), and only when unit interlock or reinforced bond beams are not part of the construction at the intersection.  Refer to the FAQ "How should intersecting masonry walls be connected?”

Rigid strap anchors should not be installed where they are not necessary, because the projecting portions of the metal strap could pose a safety hazard to persons on the project site if the projecting ends are not protected.  Lateral-force-resisting walls should be identified as such by notes on the drawings.  When required, strap anchors should be provided in accordance with MIM Detail 2/S-2.

structural detail 2


  1. Building Code Requirements for Masonry Structures, TMS 402-13/ACI 530-13/ASCE 5-13, Masonry Standards Joint Committee (MSJC)
  2. Masonry Institute of Michigan’s Structural Masonry Details

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