Masonry Magazine September 1979 Page. 21
3.03 MASONRY VENEER:
b. Provide joints with rigid steel anchors.
c. Space anchors not more than 4 ft. (1.2 m) apart vertically.
**OR**
a. When acceptable to the Architect/Engineer, eliminate blocking and provide rigid steel anchors spaced not more than 24 in. (610 mm) apart vertically.
3. Anchor non-bearing partitions abutting or intersecting other walls or partitions with:
a. Cavity wall ties at vertical intervals of not more than 24 in. (610 mm).
**OR**
a. Masonry bonders in alternate courses
4. Attach brick veneer to backing with metal veneer ties:
a. Use one tie for each 4 sq. ft. (0.37 m²) of wall area.
b. Maximum space between adjacent ties:
(1) Vertically and horizontally: 24 in. (610 mm).
c. Embed ties at least 2 in. (51 mm) in horizontal joint of facing.
d. Provide additional ties at openings:
(1) Maximum spacing around perimeter: 36 in. (914 mm).
(2) Install within 12 in. (305 mm) of opening.
3.04 REINFORCED BRICK MASONRY:
A. Brick Installation:
1. Lay brick plumb and true to lines.
2. Lay with completely filled mortar joints.
3. Do not furrow bed joints.
4. Butter ends of brick with sufficient mortar to fill head joints.
5. Slightly bevel mortar bed to incline towards cavity.
6. Rock closures into place with head joints thrown against two adjacent brick in place.
7. Do not pound corners and jambs to fit stretcher units after they are set in position. Where an adjustment must be made after mortar has started to harden, remove mortar and replace with fresh mortar.
B. Forms and Shores:
1. Provide substantial and tight forms.
2. Leakage of mortar or grout is not permitted.
3. Brace or tie forms to maintain position and shape.
4. Do not remove forms and shores until masonry has hardened sufficiently to carry its own weight and other temporary loads that may be placed on it during construction:
a. For girders and beams: Minimum 10 days.
b. Under brick slabs: Minimum 7 days.
C. Placing Reinforcement:
1. Position metal reinforcement accurately.
2. Secure against displacement:
a. Hold vertical reinforcement firmly in place by means of frames or other suitable devices.
b. Horizontal reinforcement may be placed as brickwork progresses.
3. Spacing:
a. Minimum clear distance between longitudinal bars, except in columns: Nominal diameter of bar or 1 in. (25 mm).
b. Minimum clear distance between bars in columns: Not less than 1 1/2 times bar diameter or 1 1/2 in. (38 mm).
3.03.E.4 Tie spacing is based on a design wind pressure of 20 psf (958 N/m²). Maximum spacing should be decreased for higher wind pressures. Recommended spacing for:
30 psf (1436 N/m²):
Vertically: 24 in. (610 mm)
Horizontally: 16 in. (406 mm)
40 psf (1913 N/m²):
Vertically: 18 in. (457 mm)
Horizontally: 16 in. (406 mm)
3.04.A If hollow units are specified, alter to conform to requirements of the units.