Design data for the Slotted Heavy Duty Rap-Tie are reported
separately for Canada and the United States in the following
tables because design methods and requirements for masonry
ties and their uses differ between their respective codes
and standards.
| Design
Parameter |
Design Data (i),(iii)
|
1. Mechanical Free Play (iv)
(with FERO V-Tie™)
|
1.04 mm (max.) [0.041"]
|
| 2. Serviceability at 0.45 kN [100 lbs] (iv) |
Tie Mounted Directly to Steel Stud
|
Tie Mounted on Surface of Protected Exterior Gypsum Sheathing
over Steel Stud (ii)
|
| Deflection |
0.63 mm [0.025"] |
0.66 mm [0.026"] |
Deflection +
Mechanical Free Play |
1.67 mm (max.)
[0.066"] |
1.7 mm
(max.)
[0.067"] |
3. Factored Resistance
(Ø Pult) (v),(vi),(vii) |
1.51 kN [331 lbs.]
|
| 4. Maximum Recommended
Spacing (viii) |
Horiz.
800 mm [32"]
|
Vert.
600 mm [24"]
|
| (i) |
These design data are based on connector
testing in accordance with CSA A370-04, Connectors for
Masonry, with no surcharge and with test samples having
the following configuration: 127 mm [5”] cavity;
102 mm [4”] Slotted Heavy Duty L-Plate; 25 mm [1”]
air space; one (1) fastener located in the centre hole
of the L-Plate; standard FERO V-Tie™; and
V-Tie™ engaged into L-Plate at position of maximum vertical adjustment.
Smaller cavity widths and/or the addition of insulations providing lateral support
to the tie L-Plate will increase the tabled factored resistance of the tie and
reduce tie deflection.
|
| (ii) |
Protected exterior gypsum sheathing consisting of Perma-Barrier
(W.R. Grace) adhered to 12.7 mm (0.5”) exterior
gypsum board.
|
| (iii) |
These design data reflect both the windward (compression)
and leeward (tension) capacities of the Slotted Heavy
Duty Rap-Tie system, with the governing values listed.
|
| (iv) |
The Slotted Heavy Duty Rap-Tie satisfies the limiting
requirements for serviceability (tie displacement and
mechanical free play) in CSA A370-04. Tabled mechanical
free play is for stainless steel components. The mechanical
free play for hot-dip galvanized components is less.
|
| (v) |
The ultimate strength of the Slotted Heavy Duty Rap-Tie,
Pult, is determined in accordance with CSA A370-04 and
is calculated by multiplying the average tie strength
established by testing by (1 – 1.64 cov). The factored
resistance of the tie system (ø Pult = ø R)
is calculated using the Limit States Design procedures
of CSA A370-04.
|
| (vi) |
The stated tie factored resistance does not consider
fastener resistance. A compatible fastener (or fasteners)
having an adequate factored resistance must be selected
(by design in accordance with CSA A370-04).
|
| (vii) |
The factored resistance of the mortar pull-out or push-through
for the V-Tie™ embedded at the centreline of 90
mm (3.5”) brick veneer utilizing Type S or N mortar
exceeds or equals the tabled factored resistance, ø Pult.
Failure by pull-out/push-through of the mortar joint
does not govern.
|
| (viii) |
Maximum recommended tie spacings are the maximum spacings
permitted by CSA S304.1-04, Design of Masonry Structures.
For a particular design, the actual tie spacings are
calculated such that the factored resistance of the tie, ø Pult,
equals or exceeds the effect of factored loads. See S304.1-04
for the design of masonry veneer systems. |
