StiffClip® WC

StiffClip® WC connects truss framing web members to chord members. Clip sizes vary with each application. Guide holes are provided in each StiffClip® WC for accurate fastener placement. Design loads consider loads on the clip only. Size and number of fasteners used is based on fastener manufacturer’s allowable load data.

Value

  • Stiffened ribs for added strength (use varies with each clip)
  • Guide holes for attachment to framing members (.172” dia.)
  • No time and expense spent cutting steel shapes
  • Structurally load tested
  • Meets all building code criteria
Downloads: Download Technical data Tech Sheet | Download drawing file DWG | Download BIM data BIM
  • Application Image
  • Installation
  • Nomenclature/Order Info
  • Allowable Loads
  • Hole Patterns
  • Material Composition

WC App

  1. Place StiffClip WC at web of each framing member.
  2. Attach StiffClip WC to framing member with required screws through guide holes

pdf icon Printable Installation Instructions

Quantity/Order Information

Designation
Qty/Box
Lbs/Box
Pcs/Skid
Lbs/Skid
WC350-54mil, 10" lg 100 62 4500 2790
WC350-118mil, 10" lg 50 70 2250 3150
WC550-54mil, 13" lg 50 69 1600 2208
WC550-118mil, 13" lg 25 78 800 2496
WC750-54mil, 16" lg 50 92 3000 5520
WC750-118mil, 16" lg 25 81 1500 4860

 

 

  StiffClip WC Dimensions

Nomenclature

StiffClip® WC is designated by multiplying stud depth in inches by 100, then listing material thickness and length.

Example: WC350-54mil 10”

WC = StiffClip® WC
350 = Stud depth of 3½” (x100)
54mil = Steel thickness
10” = Length of clip

 

Available Thicknesses

Mils
Gauge
Decimal (in)
54 16 0.0566
118 10 0.1242

 

Max. Member Thickness (Web or Chord) (mils) Fy (Yield) WC350-54mil, 10" lg WC350-118mil, 10"lg WC550-54mil, 13"lg
2 #12 Screws (lbs) 4 #12 Screws (lbs) 6 #12 Screws (lbs) 8 #12 Screws (lbs) 2 #12 Screws (lbs) 4 #12 Screws (lbs) 6 #12 Screws (lbs) 8 #12 Screws (lbs) 2 #12 Screws (lbs) 4 #12 Screws (lbs) 6 #12 Screws (lbs) 8 #12 Screws (lbs) 10 #12 Screws (lbs)
33 33 167 246 398 1,300 377 754 1,130 1,507 82 118 184 327 737
33 50 167 246 398 1,300 544 1,089 1,633 2,178 82 118 184 327 737
43 33 167 246 398 1,300 561 1,122 1,682 2,243 82 118 184 327 737
43 50 167 246 398 1,300 810 1,620 2,431 3,241 82 118 184 327 737
54 33 167 246 398 1,300 789 1,577 2,366 3,154 82 118 184 327 737
54 50 167 246 398 1,300 1,139 1,817 2,944 4,556 82 118 184 327 737
68 50 167 246 398 1,300 1,232 1,817 2,944 5,275 82 118 184 327 737
97 50 167 246 398 1,300 1,232 1,817 2,944 5,275 82 118 184 327 737
Max. Allowable Clip Load 1.300 * 5,275 * 737 **
Max. Member Thickness (Web or Chord) (mils) Fy (Yield) WC550-118mil, 13" lg WC750-54mil, 16"lg WC750-118mil, 16"lg
4 #12 Screws (lbs) 6 #12 Screws (lbs) 8 #12 Screws (lbs) 10 #12 Screws (lbs) 4 #12 Screws (lbs) 6 #12 Screws (lbs) 8 #12 Screws (lbs) 10 #12 Screws (lbs) 12 #12 Screws (lbs) 4 #12 Screws (lbs) 6 #12 Screws (lbs) 8 #12 Screws (lbs) 10 #12 Screws (lbs) 12 #12 Screws (lbs)
33 33 754 1,130 1,507 1,884 112 161 251 447 1,005 754 1,130 1,507 1,884 2,261
33 50 1,089 1,633 2,178 2,722 112 161 251 447 1,005 1,089 1,633 2,178 2,722 3,266
43 33 1,122 1,682 2,243 2,804 112 161 251 447 1,005 1,122 1,682 2,243 2,804 3,365
43 50 1,249 1,951 3,241 4,051 112 161 251 447 1,005 1,183 1,703 2,661 4,051 4,861
54 33 1,249 1,951 3,154 3,943 112 161 251 447 1,005 1,183 1,703 2,661 4,731 6,834
54 50 1,249 1,951 3,469 5,695 112 161 251 447 1,005 1,183 1,703 2,661 4,731 6,834
68 50 1,249 1,951 3,469 7,774 112 161 251 447 1,005 1,183 1,703 2,661 4,731 9,662
97 50 1,249 1,951 3,469 7,774 112 161 251 447 1,005 1,183 1,703 2,661 4,731 10,188
Max. Allowable Clip Load 7,774 ** 7,774 ** 10,601 **

* Load based on structural test.
** Load based on calculations.

  • Allowable design loads apply to tension or compression on StiffClip WC utilizing the fastener patterns shown.
  • Allowable loads have not been increased for wind, seismic, or other factors.
  • All guide holes may not require fasteners. Fastener amount determined by designer.

Load Directions

StiffClip WC Dimensions

StiffClip WC Screw Patterns

Steel:

54mil: ASTM A1003/A1003M Structural Grade 40 (275) Type H, ST40H (ST275H): 40ksi (275MPa) minimum yield strength, 55ksi (380MPa) minimum tensile strength, 54mil minimum thickness (16 gauge, 0.0566” design thickness) with ASTM A653/A653M G90 (Z275) hot dipped galvanized coating.

118mil: ASTM A1003/A1003M Structural Grade 50 (340) Type H, ST50H (ST340H): 50ksi (340MPa) minimum yield strength, 65ksi (450MPa) minimum tensile strength, 118mil minimum thickness (10 gauge, 0.1242” design  thickness) with ASTM A653/ A653M G90 (Z275) hot dipped galvanized coating.