ACI 530 Code

General Analysis & Design Requirements continued...

Intersecting Walls

The connection of intersecting walls shall conform to one of the following requirements:

  1. Fifty percent of the masonry units at the interface shall interlock.
  2. Walls shall be regularly toothed with 8 in. maximum offsets and anchored by steel connectors meeting the following requirements: (a) Minimum size: 1/4 in. x 1 1/2 in. x 28 in. (6.4 mm x 38 mm x 711 mm) including 2 in. (51 mm) long 90 deg bends at each end to form a U or Z shape. (b) Maximum spacing: 4 ft. (1.2 m)
  3. Intersecting bond beams shall be provided in intersecting walls at a maximum spacing of 4 ft (1.2 m) on centers. Bond beams shall be reinforced, and the area of reinforcement shall not be less that 0.1 in. 2 per ft (211 mm2/m) of wall. Reinforcement shall be developed on each side of the intersection.

Stack Bond Masonry

For masonry in other than running bond, the minimum area of horizontal reinforcement shall be 0.0003 times the vertical cross-sectional area of the wall. Horizontal reinforcement shall be placed in horizontal joints, or in bond beams spaced not more than 48 in. (1219 mm) on center.

 

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