SLOTTED RAP-TIE NOTES
- The design values reflect both the windward and leeward capacity of the system, with the governing values listed.
- The tie system recommended design load values were formulated following the procedures of CSA CAN3-A370-04 “Connectors for Masonry”, ACI/ASCE/TMS/518 and U.B.C. The values have been corrected to account for test result variation, and reflect a factor of safety of 2.25 (i.e. 75% of 3.0), as per Table 3 (A370).
- The allowable mortar pull-out or push-out design load for the V-Tie® embedded at the centerline of 90 mm (3.5”) brick veneer utilizing Type M, S or N mortar, exceeds or equals the recommended design loads listed above.
- For the Slotted Rap-Tie tests, “protected drywall” consisted of Perma-Barrier (W.R. Grace) adhered to 12.7 mm (0.5”) drywall. Note that this detail is not recommended for use in high humidity buildings such as swimming pools, etc.
- The above design values relate to the capacity of the FERO tie components. A compatible fastener (or fasteners) capable of resisting the design loads must be selected.
- The above design values are based on test results utilizing a 127 mm (5”) cavity (102 mm [4”] Slotted L-Plate and 25 mm [1”] air space), and one fastener located in the center hole. No insulation was used. Note that for smaller cavity widths and/or with the addition of insulation sheathing providing lateral tie support, increased tie system design loads and reduced tie system deflections maybe realized.
- Maximum recommended spacing reflects the maximum allowable by CSA-A370-04, ACI/ASCE/TMS/518 and U.B.C. For stud construction, every vertical stud should contain ties. Design will ultimately govern spacing.
