• Metal ties should be used where notching or drilling an exterior wall or load-bearing wall the top plate by more than 50%.
  • Must use metal ties not less than 0.054” thick and 1.5” wide.
  • Ties must be used on each side of the opening with not less than [8] 10d nails on each side.
  • The tie must extend 6” past opening.
  • Simpson HRS416Z tie plate is shown below.
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