FERO Corporation, Block Shear Connector Notes, Manufacturer of Masonry Connectors, Ties and Fasteners

(i)	The above design load and deflections pertain to use of the Block Shear™ Connector in conventional tie applications. For composite wall utilization, engineering analysis is required to determine allowable loads and deflections.
(ii)	The design value reflects both the windward and leeward capacity of the Block Shear™ Connector tie system, with the governing value listed.
(iii)	The tie system recommended design load value was 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 value has been reduced to account for test result variation, and reflects a factor of safety of 2.25 (i.e., 75% of 3.0), as per Table 3 (A370).
(iv)	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 S mortar, exceeds or equals the recommended design load listed above.
(v)	The allowable mortar pull-out or push-out design load for the Block Shear™ Connector Plate embedded in the mortar joint of the concrete blockwork utilizing Type S mortar, exceeds or equals the recommended design load listed above.
(vi)	The spacing of the Block Shear™ Connector ties for composite walls will be governed by design, with decreased vertical spacing occurring at the top and bottom of the wall system.
(vii)	The above design values are based on tests utilizing a 114 mm (4.5”) cavity (25 mm [1”] air space). 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.
(viii)	Maximum recommended spacing reflects the maximum allowable by CSA-A370-94, ACI/ASCE/TMS/518 and U.B.C. Design will ultimately govern spacing.

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