BL-42 Ladder Reinforcement

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BL-42 is a ladder-type masonry reinforcing with box ties lap-welded every 16” (400 mm) O.C. extending into the cavity.

  • A specially welded cross-bar across the box tie restrains the out-of-plane movement of the two wythes.
  • A System 2000 wire tie is engaged to complete the tie system.
  • All hook ties are 3/16” (4.76 mm) in. dia.
  • Minimum tie embedment is 1 1/2” (40 mm).
Finish Material Specification Coating Specification Minimum Coating Mass
Mill Galvanized Wire CSA A370-14 A641 .010”
Hot Dipped Galvanized After Fabrication Wire CSA A370-14 ASTM A153 Class B2 1.50 oz/ft2 (457 g/m˛)
Stainless Steel Wire ASTM 79-AISI, Type 302 & 304 None Uncoated
  • 10’ (3.048 m) lengths.
  • 25 pieces per bundle.
  • Bed joint alignment for connecting wythes recommended.
  • Complies with ASTM C951, ACI 530 for joint reinforcement, CSA standard A370.

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