Masonry Magazine April 1988 Page. 24
TABLE 1
Tie Spacing Recommendations 1.2
Wall Type | Cavity or Air Space Width (in.) | Tie System | Maximum Area Per Tie (sq ft) | Maximum Vertical Spacing (in.) | Maximum Horizontal Spacing (in.)
---|---|---|---|---|---
Cavity | ≤3½ | Unit Tie | 4½ | 24 | 36
| | | Std. Joint Reinforcement | | 16 |
| | | Unit Adj. Double Eye & Pintle | 2 | 24 | 24
| | | Unit Adj. Single Eye & Pintle | 1¾ | 16 | 16
| | | Adj. Joint Reinforcement | | 16 |
| > 3½ but ≤ 4½ | Unit Tie | 3 | 24 | 36
| | | Std. Joint Reinforcement | | 16 |
| | | Unit Adj. Double Eye & Pintle | 2 | 24 | 24
| | | Adj. Joint Reinforcement | | 16 |
Veneer/Wood Stud | 1 | Corrugated | ¾ | 24 | 24
Veneer/Steel Stud | ≤1 | Adj. Unit Veneer Ties | ½ | 24 | 24
| >1 but ≤2 | Adj. Unit Veneer Ties | 2 | 24 | 18
Veneer/Concrete or CMU Backup | ≤1 | Adj. Unit | 2 | 24 | 24
Multi-Wythe Brick | | Unit Ties | 4½ | 24 | 36
| | | Std. Joint Reinforcement | | 16 |
Brick/Block Composite | | Unit Ties | 4½ | 24 | 36
| | | Std. Joint Reinforcement | | 16 |
Two-Wythe Grouted | | Unit Ties | 2¾ | 16 | 24
| | | Std. Joint Reinforcement | | 16 |
¹Based on minimum tie diameters and gages listed in Table 2. Masonry laid in running bond. Consult applicable building code for special bond patterns such as stack bond.
³One and two-family wood frame construction not over 2 stories in height.
"Wood frame construction over 2 stories in height.
For high-lift grouted walls. Masonry laid in running bond.
Even if not present, there is no ASTM standard specification governing fusion-bonded epoxy coating of wire or steel sheet for metal ties. Some manufacturers are reportedly using a modified version of ASTM A 775 governing fusion-bonded epoxy reinforcing bars.
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