STUD SHEAR™ CONNECTOR BENEFITS
- The Stud Shear™ Connector greatly increases the stiffness of the wall system through composite action, thereby significantly reducing the lateral deflection of the wall assembly.
- By providing composite action between the brick veneer and the stud backup wall, the size and thickness of stud can both be reduced, thereby reducing the wall cost. These savings are again realized in greater useable floor space provided. Table 1 illustrates examples of the improved structural performance provided by the Stud Shear™ Connector wall system.
- The Stud Shear™ Connector provides fixity to the sheet insulation in all three directions, minimizing separation at sheet insulation junctions
Table 1 Steel Stud Backup Wall Design Comparison
| Steel Stud Backup Wall Design Requirements | ||
| Wall Height H (mm) |
Conventional Design | Shear™ Connected Composite Design |
| 3,000 (10') | 152 mm (6") x 18 ga. @ 400 mm (16") o.c. (H/720 = 4.2 mm) (0.17") |
102 mm (4") x 20 ga. @ 400 mm (16") o.c. (H/2098= 1.4 mm) (0.055") |
| 4,500 (15') | 203 mm (8") x 16 ga. @ 400 mm (16") o.c. (H/720 = 6.3 mm) (0.25") |
152 mm (6") x 18 ga. @ 400 mm(16") o.c. (H/ 2010 = 2.2 mm) (0.087") |
| 6,000 (20') | 203 mm (8") x 14 ga. @ 200 mm (8") o.c. (H/720 = 8.3 mm) (0.33") |
203 mm (8") x 18 ga. @ 400 mm (16") o.c. (H/2000 = 3.0 mm) (0.12") |
NOTES
(i) Design lateral wind load = 1.0 kPa (20.8 psi) (pressure and suction).
(ii) Design allowable deflection = H/720.
(iii) Assumed deflection due to top and bottom connections, ties, stud twist, etc. = 1.0 mm (0.04”).
(iv) The maximum lateral wall deflections are given in parenthesis.
(v) Assumed cavity width = 100 mm (4").
(vi) Stud Shear™ connectors spaced horizontally at 400 mm (16") o.c., and vertically as per Figure 6.
(vii) Full bed, Type S mortar assumed with 90 mm (3.5") clay brick veneer.
STUD SHEAR™ CONNECTOR DESIGN CONSIDERATIONS
Although the Stud Shear™ Connector will increase the stiffness and lateral load resisting capacity of a wall assembly, to realize the optimum (most cost efficient) wall composition, the Stud Shear™ Connector wall system must be properly analyzed and engineered by qualified design professionals.
RECOMMENDED DESIGN LOAD AND DEFLECTIONS
(CONVENTIONAL TIE USAGE)
| 1. | Free Play (maximum): | 0.80 mm (0.031") | |
| 2. | 0.45 kN (100 lbs) Deflection: - free play not included: - including free play: |
0.05 mm (0.002”) 0.85 mm (max) (0.033”) |
|
| 3. | Recommended Design Load: | 1.29 kN (290 lbs) | |
| 4. | Recommended Design Load Deflection - free play not included: | 0.20 mm (0.008”) | |
| 5. | Maximum Recommended Spacing: | Horizontal | Vertical |
| 800 mm (32") |
600mm (24") |
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