Masonry Magazine September 1979 Page. 19
b. Before placing next row of metal ties, remove and clean wood strips.
2. As work progresses, trowel protruding mortar fins in cavity flat on to inner face of wythe.
C. Non-Bearing Partitions:
1. Extend from top of structural floor to bottom surface of floor construction above.
2. Wedge with small pieces of tile, slate or metal.
3. Fill topmost joint with mortar.
D. Structural Bonding:
1. Bond or anchor corners and intersections of loadbearing brick walls.
2. Structural bond multi-wythe non-reinforced brick walls with.
a. Extend headers not less than 3 in. (76 mm) into backing.
b. Maximum distance between adjacent headers: 24 in. (610 mm) either vertically or horizontally.
c. When a single header does not extend through wall, overlap headers from opposite sides of wall at least 3 in. (76 mm).
d. Minimum headers: 4%.
**OR**
a. Provide minimum of one cavity wall tie for each 4 1/2 sq. ft. (0.42 m²) of wall surface.
b. Stagger ties in alternate courses.
c. Maximum distance between adjacent ties:
(1) Vertically: 24 in. (610 mm).
(2) Horizontally: 36 in. (920 mm).
d. Embed ties in horizontal joints of facing and backing.
e. Provide additional ties at openings:
(1) Maximum spacing around perimeter: 36 in. (920 mm).
(2) Install within 12 in. (305 mm) of opening.
**OR**
a. Use continuous prefabricated joint reinforcement to bond multi-wythe walls; spaced not more than 16 in. (406 mm) vertically.
3. Stack bond:
a. Embed continuous No. 2 steel reinforcement or No. 9 gage wire in horizontal joints at vertical intervals not to exceed 16 in. (406 mm).
b. Provide not less than one longitudinal bar or wire for each 6 in. (152 mm) of wall thickness or fraction thereof.
E. Anchoring:
1. Anchor exterior brick walls facing or abutting concrete members with dovetail, flat-bar or wire anchors inserted in slots built into concrete.
a. Maximum anchor spacing:
(1) Vertically: 24 in. (610 mm).
(2) Horizontally: 36 in. (920 mm).
b. Maintain a space not less than 1/2 in. (12.7 mm) wide between masonry wall and concrete members.
c. Keep space free of mortar or other rigid material to permit differential movement between concrete and masonry.
2. For intersecting bearing or shear walls carried up separately:
a. Regularly block vertical joint with 8-in. (203 mm) maximum offsets.
3.03.C Alter to local code requirements if suspended ceilings are used.
3.03.D Note special bonding requirements for high-lift grout, section 3.05.B.
3.03.D.2 Masonry headers, metal ties or continuous joint reinforcement.
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