Drift Head-of-Wall (DHOW)

Head-of-wall drift and deflection for exterior curtain wall and interior, nonload-bearing walls

ClarkDietrich Drift Head-of-wall clips are used in deflection conditions for in-fill curtain wall assemblies and/or interior nonload-bearing partitions to provide for both vertical (deflection) and lateral (drift) movement.

Description

ClarkDietrich Drift Head-of-wall clips are used in deflection conditions for in-fill curtain wall assemblies and/or interior nonload-bearing partitions to provide for both vertical (deflection) and lateral (drift) movement. These clips are used in place of, or in combination with, deflection track.

The Drift Head-of-wall clips can be attached to the underside of structural members, concrete decks or floor assemblies. Structural attachments are positioned in the center of the slot to allow building drift. The "C" shaped end of the clip is slid inside of the structural stud and not fastened allowing for vertical deflection. Studs must be cut less than full height to enable vertical movement up to 2" (1" up and down).

  • U.S. Patent No. D839,078

 

 

Technical Data
Installation

Installation:

The Drift HOW clips come in two designs.  The DHOW-LG (light gauge) is designed to be installed in structural stud gauges 20ga (33mil), 18ga (43mil) or 16ga (54mil).  The DHOW-HG (heavy gauge) is designed to be installed in structural stud gauges 14ga (68mil), 12ga (97mil).  Attachment to the primary structure can be made with 1/4-14 screws, or concrete anchors and shall be driven through the slotted holes and positioned in the center of the slot to allow building drift. To ensure slip, back-out the fasteners about 1/2 turn.  The "C" shaped end of the clip is slid inside of the structural stud and is not fastened, which allows for vertical deflection. Drywall screws (in the stud) shall be placed no closer than 4" from the slotted leg of the clip.

Resources

ASTM & Code Standards:

  • Sheet steel meets or exceeds requirements of ASTM A1003
  • Galvanized coating meets or exceeds requirements of ASTM A653
Submittals

PRoduct submittal SHeets

Click the below Product Code to view Submittal/Tech Datasheet.

Product code Description
DHOW3-LG Drift Head-of-Wall Clips for attaching 20ga (33mil), 18ga (43mil), or 16ga (54mil) structural studs
DHOW6-LG
DHOW8-LG
DHOW3-HG Drift Head-of-Wall Clips for attaching 14ga (68mil) or 12ga (97mil) structural studs
DHOW6-HG
DHOW8-HG

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