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Step Bushing Technology
ICC-ESR-1903
TSN LEED® Data
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TSN MSDS Report
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StiffClip® LB |
Spandrel Wall Bypass |
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Product Application
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The StiffClip® LB series connects exterior wall studs to the building’s
structure through a unique design incorporating the use of stiffened legs of a 90o
angle to increase bending strength. StiffClip LB resists horizontal and vertical
loads. The allowable design load table shown below is based on the use of StiffClip
LB as it is attached to various steel stud depths, material thicknesses and yield
strengths. Design loads consider loads on the clip and #12 screw fasteners to the
stud web. Pre-drilled guide holes in each leg allow for greater installation efficiency.
Material Composition
Steel: ASTM A653/A653M, Grade 50 (340), 50ksi (340MPa) minimum yield strength, 65ksi
(450MPa) minimum tensile strength, G-90 (Z275) hot-dipped galvanized coating. Material
thickness: 68mil (14ga, .0713” design thickness).
The attachment of StiffClip to the structure may be made with either a PAF or weld
and is dependent upon base material properties and the design configuration.
Allowable load tables incorporate eccentric loading of fasteners. Values with
a welded connection may increase.
Note:
- For PAF’s, fasten within ¾” from the angle heel centerline of
the ½” leg.
- Guide holes for attachment to structure are .172” in diameter, and are standard
for LB362, LB600, and LB800
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 StiffClip
LB Value
- Various lengths allow for construction tolerance
- Guide holes for attachment to structure and stud
- Replaces expensive bracing
- Structurally load tested
StiffClip LB Installation
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- Secure LB to pour stop with engineered attachment.
- Connect clip to stud with screws provided.
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Back to top ^
StiffClip LB
Nomenclature
StiffClip LB is available for various stud depths. To specify, multiply stud depth
by 100.
Example: 6” stud depth
Designate: StiffClip LB600.
Quantity
/ Order Information
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Designation
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Qty/Box
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Lbs/Box
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Pcs/Skid
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Lbs/Skid
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LB362/400
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50
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30
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2250
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1350
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LB600
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50
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45
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2250
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2025
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LB800
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50
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50
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1600
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1600
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LB1000
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25
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40
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1125
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1800
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LB1200
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25
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44
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800
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1408
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Back to top ^
Allowable Loads
(Clip thickness is 14ga (68mil).)
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StiffClip Series
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Stud
Thickness
Mils (ga)
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FY
(Yield)
Stud (Ksi)
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LB362 and LB600 |
LB362 |
LB600 |
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F1 w/ 3
Screws
Pattern 2
(kips)
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F2 w/ 2
Screws
Pattern 1
(kips)
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F2 w/ 3
Screws
Pattern 2
(kips)
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F2 w/ 4
Screws
Pattern 3
(kips) |
F3 w/ 2
Screws
Pattern 1
(kips) |
F3 w/3
Screws
Pattern 2
(kips) |
F3 w/4
Screws
Pattern 3
(kips) |
F3 w/2
Screws
Pattern 1
(kips) |
F3 w/3
Screws
Pattern 2
(kips) |
F3 w/4
Screws
Pattern 3
(kips) |
LB
Series
Clip is
14ga
(68mils)
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33 (20)
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33
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0.190
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0.376 |
0.564
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0.752 |
0.235 |
0.350 |
0.468 |
0.216 |
0.373 |
0.431 |
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33(20) |
50 |
0.275 |
0.544 |
0.817 |
1.089 |
0.340 |
0.506 |
0.678 |
0.313 |
0.539 |
0.623 |
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43 (18)
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33
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0.248
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0.560 |
0.840
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1.120 |
0.350 |
0.522 |
0.697 |
0.322 |
0.555 |
0.641 |
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43(18) |
50 |
0.359 |
0.810 |
1.215 |
1.620 |
0.506 |
0.753 |
1.009 |
0.466 |
0.802 |
0.928 |
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54 (16)
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33
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0.312
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0.788 |
1.182
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1.576 |
0.493 |
0.733 |
0.981 |
0.453 |
0.781 |
0.902 |
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54 (16)
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50
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0.450
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1.138 |
1.707
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1.954 |
0.711 |
1.059 |
1.417 |
0.654 |
1.128 |
1.303 |
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68 (14)
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50
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0.568
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1.610 |
1.954
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1.954 |
1.006 |
1.498 |
2.004 |
0.926 |
1.594 |
1.843 |
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97 (12)
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50
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0.768
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1.698 |
1.954
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1.954 |
1.061 |
1.579 |
2.114 |
0.976 |
1.681 |
1.923 |
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StiffClip Series
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Stud
Thickness
Mils (ga)
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FY
(Yield)
Stud (Ksi)
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LB800 |
LB800 |
LB800, 4” Offset |
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F1 w/ 3
Screws
Pattern 2
(kips)
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F2 w/ 3
Screws
Pattern 4
(kips)
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F2 w/ 4
Screws
Pattern 5
(kips)
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F3 w/ 3
Screws
Pattern 4
(kips) |
F3 w/ 4
Screws
Pattern 5
(kips) |
F3 w/ 6
Screws
Pattern 6
(kips) |
F3 w/ 10
Screws
Pattern 7
(kips) |
F3 w/ 4
Screws
Pattern 8
(kips) |
F3 w/ 6
Screws
Pattern 9
(kips) |
F3 w/ 8
Screws
Pattern 10
(kips) |
LB800
Series
Clip is
14ga
(68mils)
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33 (20)
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33
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0.190
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0.564 |
0.752 |
0.320 |
0.370 |
0.534 |
0.793 |
0.259 |
0.331 |
0.417 |
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33 (20) |
50 |
0.275 |
0.817 |
1.089 |
0.463 |
0.536 |
0.773 |
1.149 |
0.376 |
0.479 |
0.604 |
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43 (18)
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33
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0.248
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0.840 |
1.120 |
0.477 |
0.552 |
0.795 |
1.182 |
0.386 |
0.493 |
0.622 |
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43 (18) |
50 |
0.322 |
1.215 |
1.620 |
0.689 |
0.798 |
1.150 |
1.710 |
0.559 |
0.713 |
0.899 |
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54 (16)
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33
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0.322
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1.182 |
1.576 |
0.670 |
0.776 |
1.119 |
1.663 |
0.544 |
0.693 |
0.875 |
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54 (16)
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50
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0.322
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1.707 |
1.954 |
0.968 |
1.121 |
1.616 |
2.401 |
0.785 |
1.001 |
1.263 |
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68 (14)
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50
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0.322
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1.954 |
1.954 |
1.369 |
1.586 |
2.286 |
3.397 |
1.111 |
1.417 |
1.561 |
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97 (12)
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50
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0.322
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1.954 |
1.954 |
1.443 |
1.673 |
2.411 |
3.583 |
1.172 |
1.494 |
1.561 |
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StiffClip Series
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Stud
Thickness
Mils (ga)
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FY
(Yield)
Stud (Ksi)
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LB1000 and LB1200 |
LB1000 |
LB1200 |
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F1 w/ 3
Screws
Pattern 12
(kips)
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F2 w/ 3
Screws
Pattern 12
(kips)
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F2 w/ 4
Screws
Pattern 13
(kips) |
F3 w/ 2
Screws
Pattern 11
(kips) |
F3 w/ 3
Screws
Pattern 12
(kips) |
F3 w/ 4
Screws
Pattern 13
(kips) |
F3 w/ 2
Screws
Pattern 11
(kips) |
F3 w/ 3
Screws
Pattern 12
(kips) |
F3 w/ 4
Screws
Pattern 13
(kips) |
LB1000
& 1200
Series
Clip is
14ga
(68mils)
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33 (20)
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33
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0.190
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0.564
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0.752 |
0.203 |
0.364 |
0.406 |
0.211 |
0.381 |
0.421 |
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33 (20) |
50 |
0.275 |
0.817 |
1.062 |
0.294 |
0.525 |
0.588 |
0.305 |
0.550 |
0.610 |
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43 (18)
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33
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0.248
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0.840
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1.062 |
0.302 |
0.541 |
0.605 |
0.314 |
0.566 |
0.627 |
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43 (18) |
50 |
0.359 |
1.062 |
1.062 |
0.438 |
0.782 |
0.875 |
0.454 |
0.818 |
0.907 |
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54 (16)
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33
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0.312
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1.062
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1.062 |
0.426 |
0.761 |
0.851 |
0.441 |
0.796 |
0.883 |
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54 (16)
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50
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0.450
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1.062
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1.062 |
0.615 |
1.099 |
1.229 |
0.637 |
1.150 |
1.275 |
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68 (14)
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50
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0.532
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1.062
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1.062 |
0.869 |
1.554 |
1.739 |
0.902 |
1.627 |
1.803 |
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97 (12)
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50
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0.532
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1.062
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1.062 |
0.917 |
1.639 |
1.793 |
0.951 |
1.715 |
1.899 |
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StiffClip Series
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Stud
Thickness
Mils (ga)
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FY
(Yield)
Stud (Ksi)
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LB1000, 4” Offset |
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F3 w/ 4
Screws,
Pattern 14,
(kips)
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F3 w/ 6
Screws,
Pattern 15,
(kips)
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F3 w/ 10
Screws,
Pattern 16,
(kips) |
LB1000,
4” Offset
(6” to stud
and 4” distance
from
structure)
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33 (20)
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33
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0.290
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0.410
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0.602 |
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33 (20) |
50 |
0.419 |
0.410 |
0.871 |
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43 (18)
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33
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0.431
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0.610
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0.896 |
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43 (18) |
50 |
0.624 |
0.883 |
1.192 |
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54 (16)
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33
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0.607
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0.859
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1.192 |
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54 (16)
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50
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0.876
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1.192
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1.192 |
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68 (14)
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50
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1.192
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1.192
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1.192 |
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97 (12)
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50
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1.192
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1.192
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1.192 |
Important Notes
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Allowable loads have not been increased for wind, seismic, or other factors.
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Loads are based on the use of #12 screws.
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Loads listed reflect force in a single direction. When multiple loads react on the
connection, it is the responsibility of the designer to check the interaction of
forces.
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Torsional effects are considered on screw group for F3 allowable loads.
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StiffClips LB1000 and LB1200 contain 1/2” return lips on the top and bottom of the
leg attaching to the stud for increased stiffness.
Back to top ^
Back to top
Load Direction
Oct 2008
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