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RAP-TIE NOTES
| (i) |
The design values reflect both the windward and leeward capacity of the Rap-Tie system, with the governing values listed.
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| (ii) |
The tie system recommended design load values were formulated using working stress design following the procedures of CSA CAN3-A370-M94 "Connectors for Masonry", ACI/ASCE/TMS/518 and U.B.C. The values have been reduced 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).
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| (iii) |
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.
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| (iv) |
For the Rap-Tie tests, protected drywall consisted of Perma-Barrier (W.R. Grace) adhered to 12.7 mm (0.5") drywall, which satisfies the proposed tie attachment definition and detail to be included in the next revision of CSA CAN3-A370, ACI/ASCE/TMS/518 and U.B.C. Note that this detail is not recommended for use in high humidity buildings such as swimming pools, etc.
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| (v) |
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.
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| (vi) |
The above design values are based on test results utilizing a 127 mm (5") cavity (102 mm (4") 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 may be realized.
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| (vii) |
Maximum recommended spacing reflects the maximum allowable by CSA-A370-94, ACI/ASCE/TMS/518 and U.B.C. For stud construction every vertical stud should contain ties. Design will ultimately govern spacing. |
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[ DOWNLOAD
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Canadian Patent No. 1,294,457
Canadian Patent No. 1,306,116
U.S. Patent No. 4,869,043
©2000-2009 Fero Corporation
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