StiffClip® TD

The StiffClip® TD series’ unique design allows for the anchoring of wood or steel studs to the foundation incorporating a .5” steel stiffening plate for strength.

StiffClip TD resists vertical uplift loads for an effective solution in wall stud tie-downs or as the anchorage component in conventional, strap/gusset-plate shear wall construction. The allowable design load table is based on the use of StiffClip TD as it is attached to various steel stud wall material thicknesses and yield strengths. Allowable loads consider loads on the clip and screw fasteners to the stud web.

Pre-drilled holes for attachments to both deck and stud provide installers with increased efficiency.

The designed attachment of StiffClip to the primary structure is dependent upon the base material’s properties (e.g. steel or concrete) and the design configuration.

Value

  • Guide holes for connections to stud and deck
  • Stiffening plate for additional strength
  • Clip utilizes certified, 60ksi steel
  • Reduces material (replaces heavy steel angles)
  • Extensively tested

StiffClip TD

 

Patent Pending

Downloads: Download Technical data Tech Sheet | Download drawing file DWG | Download BIM data BIM
  • Application Image
  • Installation
  • Nomenclature/Order Info
  • Allowable Loads
  • Material Composition

StiffClip TD APP

  1. Place StiffClip TD at bottom of stud and attach clip to deck with approved anchor.
  2. Secure clip to stud with required amount of symmetrically placed #12 screw fasteners

pdf icon Printable Installation Instructions

Quantity/Order Information

Designation
Qty/Box
Lbs/Box
Pcs/Skid
Lbs/Skid
StiffClip® TD  25 54 1125 2408

 

 

  StiffClip TD Dimensions

Nomenclature

The StiffClip® TD product group is available in one size and utilizes a .5” plate on top of the 2.375” leg.

Designate: StiffClip® TD.
Allowable Loads for Steel Framing
Stud Thickness
Mils (ga)		 Fy (yield)
Stud (ksi)		 F3 w/12 (#12)
Screws (lbs)		 F3 w/18 (#12)
Screws (lbs)		 F3 w/27 (#12)
Screws (lbs)
33 (20)  33 2261 3391 5087
33 (20)  50 3266 4900 7349
43 (18)  33 3365 5047 7571
43 (18)  50 4861 7292 10718
54 (16)  33 4732 7097 10646
54 (16)  50 6834 10251 10718
68 (14)  50 9662 10718 10718
97 (12)  50 10188 10718 10718
Max. Allowable Clip Capacity 10718 10718 10718

 

Allowable Loads for Wood Framing (lbs)
Fastener Type Douglas Fir / Southern Pine Spruce Pine-Fir / Hem-Fir
Quantity Quantity
12 18 27 12 18 27
10d  2846 4268 6403 2465 3698 5547
16d  3279 4919 7378 2838 4257 6386
#12 Wood Screw  3451 5177 7766 3046 4569 6854
1/4” Wood Screws  4068 6054 8971 3806 5663 8391

 

When determining the allowable load of fasteners securing StiffClip to the base material and clip to stud, consider the following:

  • Fasten within 1.25” from the angle heel using the existing anchor hole.
  • Anchor hole for the clip is .938” x 1.125”; plate = .938” diameter.
  • Guide holes are in place for fastener installation efficiency. The number of fasteners are determined by the designer.
  • Attachment to stud is made with up to 27 #12 screws, symmetrically placed.

Load Direction

StiffClip TD-Load Direction

Steel: ASTM A653/653A Grade 60 (410): 60ksi (410MPa) minimum yield strength, 70ksi (480MPa) minimum tensile strength, 118mil minimum thickness (10 gauge, 0.1242” design thickness) with ASTM A653/A653M G90 (Z275) hot dipped galvanized coating.

TD Plate: ASTM A572/A572M Grade 50 (345): 50ksi (345) minimum yield strength, 65ksi (450) minimum tensile strength, ½” minimum thickness.